Remote Operations

East Asian Observatory is excited to announce that JCMT will be moving to fully remote operation from November 1st, 2019. From that date forward, JCMT will not require visiting observers to staff observing runs at the telescope.

The close collaboration between our user community and the Observatory is one of the greatest strengths of the JCMT. EAO will continue to enhance this relationship in the new era of fully remote operations via visiting young student programs, online real-time access to nighttime observing, and a range of other initiatives. We welcome your ideas and need your contributions to continue to produce the high impact science that we are all so proud of at JCMT. EAO welcomes short- and long-term visits to the Observatory to meet and collaborate with staff and learn about data reduction and analysis techniques. Astronomers wanting to work with our upcoming new instrument suite or utilize complex observing modes (e.g. VLBI) will also be encouraged to visit the JCMT to assist with commissioning efforts to ensure high quality science is produced.

In addition to welcoming visiting astronomers, the EAO will continue to host the JCMT Users Meeting yearly (this year in Taiwan) and will continue to send observatory staff to our regions when requested for workshops.

Remote operation is not a new concept for the JCMT, having been done in the past on occasion, and routinely via Extended Observing shifts since 2013/2014 (for more see the January 2014 Newsletter). Progress towards fully remote observing has been moving at an excellent pace. The observatory’s engineering team has been working hard this summer to overhaul and upgrade JCMT systems – including an overhaul of the roof and door hydraulics – and this work is on schedule to be complete well in advance of our planned switchover in November.

The Observatory appreciates your support and understanding as we advance into to this exciting new era for JCMT science. If you have any questions or concerns, please email our helpdesk@eaobservatory.org.

Image Credit: William Montgomerie

As a reminder, to get up-to-date information about the JCMT please send an e-mail to jcmt_users+subscribe@eaobservatory.org.

Hawaiʻi Astronomer Wins Canadian Award

Hawai`i Astronomer Wins Canadian Award

Hawaiʻi attracts the world’s top talent in astronomy due to Maunakea being one of the leading sites to study the universe. Today, EAO/JCMT astronomer Dr. Alex Tetarenko was awarded the 2019 J. S. Plaskett Medal by the Canadian Astronomical Society (CASCA).

Dr. Tetarenko was awarded the medal for her doctoral thesis on the physics of relativistic jets in X-ray binaries, as revealed by radio, millimeter (mm), and sub-millimeter (sub-mm) observations. Dr. Tetarenko obtained her PhD at the University of Alberta, and is now a 2018 East Asian Observatory Fellow working in Hilo, Hawaiʻi.

Dr. Tetarenko was awarded the medal for her exceptional skills both as an observer and in her insightful physical interpretation of complex observational data. Specifically, she is a leading expert in mm/sub-mm observations of black hole X-ray binaries. Recently, the journal Nature published  Dr. Tetarenko’s paper on  the rapidly spinning black hole in the Galactic binary system V404 Cygni. Dr. Tetarenko and her team used the Very Long Baseline Array (part of which is located on Maunakea) to observe this stellar mass black hole eject rapidly rotating high-speed clouds of plasma (known as jets), which are thought to be driven by the effects of Einstein’s theory of general relativity.

Dr. Alex Tetarenko with the J.S. Plaskett Medal, Awarded by the Canadian Astronomical Society at the 2019 annual general meeting in Montreal, QC, Canada. Photo Credit: Steve Mairs

On being awarded the 2019 J. S. Plaskett Medal, Dr. Tetarenko said “I am honored and humbled by the award, and grateful to be included among the list of awesome Canadian astronomers who have come before me”. On living and working in Hawaiʻi, Dr. Tetarenko said “I absolutely love being based in Hawaiʻi. Not only is Hawaiʻi one of the foremost centres of astronomy in the world, where I have access to world class telescopes and all the support and resources I need for my research, but it is also a beautiful island with a rich culture, that provides a very welcome escape from harsh Canadian winters.

Media Contacts:

  • Alex Tetarenko
  • James Clerk Maxwell Telescope
  • 1-808-969-6519
  • a.tetarenko@eaobservatory.org

 

  • Jessica Dempsey
  • James Clerk Maxwell Telescope
  • 1-808-969-6512
  • j.dempsey@eaobservatory.org

Additional Links:

About East Asian Observatory/James Clerk Maxwell Telescope
The EAO (East Asian Observatory) is formed  by EACOA (East Asian Core Observatories Association) for the purpose of pursuing joint projects in astronomy within the East Asian region. The EAO is chartered as a non-profit Hawai`i corporation. Its first task is to assume the operation of the James Clerk Maxwell Submillimetre Telescope (JCMT) on the summit of Maunakea, Hawai`i. Pursuant to an agreement with the University of Hawai`i, the EAO also provides engineering and IT support to the UKIRT Observatory (UKIRT). The JCMT is run by the non-profit organization the East Asian Observatory.

 

Special Supplementary Call for South Korea-led Proposals – 19B

The East Asian Observatory invites JCMT observing proposals with Principal Investigators (PIs) affiliated with a South Korean institution only for a special 19B Supplementary Call for Proposals. Proposal submission is via the JCMT proposal handling system, Hedwig. For full details, and for proposal submission, please see here.

The proposal submission deadline for this Special 19B Supplementary Call for Proposals is July 8th, 2019.

This Call is using a new “Rapid Turnaround”-style peer-review format, in which all proposals submitted for this Call shall be peer-reviewed by the proposal creator (or designated co-author) of other proposals also submitted for this Call.

The proposal peer-review deadline for this Call is July 22nd, 2019.

If this is your first time using Hedwig, you should ‘Log in’ and generate an account. There is a Hedwig ‘Help’ facility at the upper right corner of each page, and individual Help tags in many other places.

Please contact us at helpdesk@eaobservatory.org if you have remaining questions.

– 20190215

International Women’s Day 2019

The Women of Maunakea once again met to celebrate their achievements and seek more advancements at this years International Women’s Day event held on March 3rd at Imiloa Astronomy Centre, Hilo, Hawai`i.

At the event our organization introduced a new equality challenge for the entire astronomy community on Hawai‘i Island, pledging to support equality and diversity within their ranks. Jessica Dempsey, Deputy Director of EAO/JCMT stated that

“Living in one of the most diverse states in the country, host to the most female astronomers in the world, we are uniquely positioned to serve as a model of progress toward gender equity and diversity in the workplace”

Jessica seeks to get to gender parity within the ranks of the organization by 2024 .

The event has been followed with a number of social media posts by the Maunakea Observatories within Hawai`i in support of International Women’s Day 2019 held on March 8th (#IWD2019).

Big Island Now – Maunakea Observatories Launches Equity Challenge on International Women’s Day

Big Island Video News – International Women’s Day Mixer At Imiloa

Call for Proposals 19B

The East Asian Observatory is happy to invite PI observing proposals for semester 19B at the JCMT. Proposal submission is via the JCMT proposal handling system, Hedwig. For full details, and for proposal submission, please see

https://proposals.eaobservatory.org/

The 19B Call for Proposals closes on the 15th of March, 2019.

If this is your first time using Hedwig, you should ‘Log in’ and generate an account. There is a Hedwig ‘Help’ facility at the upper right corner of each page, and individual Help tags in many other places.

Please contact us at helpdesk@eaobservatory.org if you have remaining questions.

– 20190215

JCMT Transient Survey Team Observes Record-Breaking Flare

On November 26th, 2016, the JCMT Transient Survey Team observed what is estimated to be the most luminous known flare associated with a young stellar object. It is also the first coronal flare discovered at submillimetre wavelengths. The brief flash of light occurred in the direction of a binary system of forming stars known as “JW 566” in the Orion Nebula and it carried ten billion times the amount of energy of the solar flares observed around the Sun.

Left: The Orion Nebula as seen by SCUBA-2 at 850 microns. Right: Two images of
the field surrounded by the green square taken 6 days apart. Small rectangles/triangles show the
positions of known young stars found by other telescopes. On November 20th, 2016, there was
no signal. On November 26th, 2016, the flare was observed while it was already dimming from
its (unseen) maximum brightness.

The flare was discovered by JCMT support astronomer Dr. Steve Mairs using advanced image analysis techniques that had been developed by the Transient Survey team over the past 2 years. The SCUBA-2 observations lasted approximately 30 minutes over which time  the flare faded to half of the brightness measured at the beginning of the scan, indicating the event was short-lived. The flare is thought to be caused by an intense magnetic field re-connection event that energised charged particles to emit gyrosynchrotron/synchrotron radiation.

Press Release: Sky and Telescope, Hawai’i Tribune Herald, Big Island News

Publication: ArXiv, ApJ

The JCMT Transient Survey Team

The JCMT Transient Survey team is an international collaboration of 80 astronomers led by Dr. Gregory Herczeg of Peking (Kavli Institute for Astronomy and Astrophysics) and Dr. Doug Johnstone (National Research Council of Canada). The team has been monitoring 8 star-forming regions in the Milky Way with a monthly cadence since December, 2015. The survey will continue through January, 2020.

The Brightest Quasar in the Early Universe

Observations obtained by the JCMT helped uncover the Brightest Quasar in the Early Universe!

The light from Quasar J043947.08+163415.7 is gravitationally lensed by a dim Galaxy in the foreground, allowing Fan et al. (2019, APJL: 870, 11) to get a good look at this active galactic nucleus at a redshift of z = 6.51 (A distance of ~12.8 Billion Light years!). As the authors note, “This is the first such object detected at the epoch of reionization, and the brightest quasar yet known at z > 5”.

The JCMT is instrumental in observing distant star-forming galaxies. These galaxies have high concentrations of dust that reprocess the starlight such that it is emitted at infrared wavelengths. The light is then redshifted due to the expansion of the universe into the submillimetre regime. The star formation rate is estimated to be 10,000 times higher than that of our own Galaxy, the Milky Way.

Press Release:

Astronomers uncover the brightest quasar in the early universe

Publication:

The Discovery of a Gravitationally Lensed Quasar at z = 6.51


An artist’s rendering of a distance quasar (Credit: ESO/M. Kornmesserhttp://www.eso.org/public/images/eso1122a/)

A bit of history…

The name “Quasar” is a shortened version of the original designation scientists gave to a mysterious signal we didn’t have a scientific interpretation for: a “quasi-stellar radio source” discovered in 1963 by Maarten Schmidt.

Over decades of intensive studies, astronomers have been able to determine that these mysterious signals were coming from intense bursts of light in the hearts of galaxies far, far away.

Most (maybe all!) galaxies contain a supermassive black hole millions to billions times the mass of our Sun. In some of these galaxies, infalling material gets too close to the black hole and it heats up to millions of degrees, exploding outward in a massive release of energy!

We can detect those signals, which we now affectionately call Quasars, at submillimetre wavelengths with the JCMT.

Congratulations to Dr. Xiaohui Fan and his co-authors !

ABC Film Crew Visit JCMT

This past week the JCMT was host to a film crew from the Australian Broadcasting Corporation, based in Sydney. The crew were visiting Hawaii as part of a science television program  called Catalyst. Specifically they were out visiting the JCMT as part of a program about the Black Hole at the centre of our Milky Way, and how JCMT, along telescopes from around the world are coming together to form the Event Horizon Telescope – looking to take an image of the shadow around the Black Hole at the centre of our Galaxy.

 

Maunakea Wonders Teachers Workshop

The third Maunakea Wonders Teacher Workshop began on October 17th at the University of Hawai’i’s Department of Education in Hilo. Throughout the second half of October, we have the incredible opportunity to share fun astronomy activities and resources with the future teachers of Hawai’i. Despite the frigid weather, this included on-site tours of the JCMT and UKIRT where we had a blast talking about the different functions of each telescope on the mountain. We are looking forward to more fun and excitement on campus on October 31st – Mahalo nui loa to this vibrant group of educators!

-20181022

Maunakea Gender Equity and Diversity Survey 2018 Report

In July 2018, the Maunakea Gender Equity and Diversity Committee distributed a survey to the staff at the Maunakea astronomical organizations. The survey was intended to invite opinion on the current state of equity and diversity in the Maunakea astronomy community and seed conversation and ideas for enhancing diversity and inclusion in our organizations across our islands.

The report on the results of the survey is here:

Maunakea Gender Equity and Diversity Survey 2018 Report

and the Appendix A, listing the survey questions, is provided for reference:

Gender Equity and Diversity Survey questions

The first results are presented by Jessica Dempsey at the Maunakea Users’ Meeting on October 4th, 2018. A PDF of the talk is linked here for convenience. For usage or distribution of these data, please contact Jessica Dempsey: j.dempsey “at” eaobservatory.org.

Photo by Oro Whitley

– 20181004

 

Call for Proposals 19A

The East Asian Observatory is happy to invite PI observing proposals for semester 19A at the JCMT. Proposal submission is via the JCMT proposal handling system, Hedwig. For full details, and for proposal submission please see

https://proposals.eaobservatory.org/

The 19A Call for Proposals closes on the 15th of September, 2018.

If this is your first time using Hedwig, you should ‘Log in’ and generate an account. There is a Hedwig ‘Help’ facility at the upper right corner of each page, and individual Help tags in many other places.

Please contact us at helpdesk@eaobservatory.org if you have remaining questions.

– 20180815

Mahalo to Mailani Neal!

The East Asian Observatory wishes to extend a big mahalo to our summer intern Mailani Neal for her excellent work tracking temperature changes across the JCMT’s dish!

We are grateful for all her hard work and we wish her all the best as she enters her final year at Rensselaer Polytechnic Institute in New York!

This gif shows an example of the telescope’s changing temperature over one night in June, 2018:

This analysis is important for understanding calibration observations and the effect of the weather on all the data we collect.

Mahalo, Mailani!

– 20180807

RxA3m Retires

     We are only as good as the instruments we have. With this sentiment in mind, we make way for the next generation of instruments as we retire one of our long-serving heterodyne receivers, RxA3. 

RxA3m in the receiver cabin at JCMT

     RxA3 (http://www.eaobservatory.org/jcmt/instrumentation/heterodyne/rxa/) has been a stable source of great science for the JCMT since it was built by the Herzberg Institute of Astrophysics and delivered in 1998. It has served our JCMT user community well and the data collected from RxA3 will be utilized still for years to come. 

The GLT receiver installed at the JCMT when it was being tested in August 2017.

      With the retirement of RxA3, JCMT prepares for it’s replacement to arrive in January 2019 and hopes to be on sky by April 2019 in time for the next Event Horizon Telescope observing run. The replacement will be a three-receiver cryostat identical to that installed on the Greenland Telescope (GLT), and is estimated to be able to complete observations in approximately 1/4 of the time required by RxA3.
                      -2018/07/05

2018 OT update

We are always striving to do better at the JCMT and that means we often update our software. One software update that uses should be aware of is a new version of the JCMT Observing Tool.

It is particularly important to note that the OT version used for all semester 18B MSB preparation must be 20180516 (or newer). This may be checked via the OT start-up splash screen and also via the “Help -> About” menu option.

– 20180525

SMU Removal

Check out our hardworking staff carefully removing the Secondary Mirror Unit (SMU). JCMT is currently closed (2.5 weeks in May 2018) as the SMU undergoes some important maintenance. The basics of the work being done:
1. Chopper performance and XYZ tables measurements
2. Remove the chopper and service the SMU tables (strip down, clean, lubricate, change belts)
3. Reassemble SMU tables, reattach chopper and service (balance, vibrators, flex pivots, LVDTs, stingers)
4. Finalize and implement new zero points, rollover points, and limits
**Many thanks to our TSS Kevin Silva for putting together this awesome timelapse compilation.**

-20180514

Call for Proposals 18B

The East Asian Observatory is happy to invite PI observing proposals for semester 18B at JCMT. Proposal submission is via the JCMT proposal handling system, Hedwig. For full details, and for proposal submission please see

https://proposals.eaobservatory.org/

The 18B Call for Proposals closes on the 15th of March, 2018.

If this is your first time using Hedwig, you should ‘Log in’ and generate an account. There is a Hedwig ‘Help’ facility at the upper right corner of each page, and individual Help tags in many other places.

Please contact us at helpdesk@eaobservatory.org if you have remaining questions.

– 20180214

Membrane back on!

January 10, 2018  The JCMT’s protective membrane is back in place after our month of commissioning without it. Now we can go back to observing in reasonable wind and during the daytime!

 

-20180111

Engineering shutdown – May 2018

From time to time the JCMT is closed due to major maintenance work. The next scheduled closure of the JCMT will occur from April 30th 2018 to mid May 2018. During this time the Gore-Tex membrane windblind will be removed to provide access to the Secondary Mirror Unit for maintenance work. As the telescope will be unavailable for science during this time the SCUBA-2 Gas Handling System will also be worked on. SCUBA-2 will be warm during this period and should back to operational temperature/available for science use by the end of May.

– 20171201

Membrane removal scheduled for December 2017

The staff at EAO would like to announce that we are planning an approximately month-long observing campaign without our iconic Gore-Tex membrane windblind.

The removal of the membrane is due to the high demand for sub-mm polarimetry. Currently the instrument POL-2 is commissioned and working beautifully at 0.85mm, with some fantastic science results. POL-2 science at 0.85 mm has been so successful that we are keen to see if operating without the membrane – which can limit the throughput and increase instrumental polarization – we can commission POL-2 at 0.45 mm.

Observing without the membrane is not our normal mode of operation and the telescope will have additional operational limitations during this time. The JCMT will not take daytime observations and the operational wind limits will be reduced.

We expect to remove the membrane early in December and thank the JCMT astronomical community for their support.

– 20171122

JCMT OMP Database Migration Complete

The migration of our OMP database system is now complete.

Principal Investigators/Co-Investigators on current JCMT programs (17B PI programs, Urgent queue programs, and the Large Programs) should again be able to retrieve recently-acquired data for their program from either the program’s OMP page or directly from the JCMT data archive at the CADC. As usual, the former method requires that the user’s OMP and CADC accounts are first linked (please see here for more details).

Any PIs/Co-Is that continue to encounter problems should consult their designated Friend of Project (FoP).

– 20171120

JCMT Data Retrieval During Database Migration Period

We are currently migrating our OMP database system, a process that is expected to take up to 4 weeks. During this period, any Principal Investigators/Co-Investigators on current JCMT programs (17B PI, Urgent queue projects, and the Large Programs) wishing to retrieve recently-acquired data for their projects should download it directly from the JCMT data archive at the CADC, rather than from the project’s OMP pages.

– 20171102

Update: This database migration process has now been completed (see above for further details).

– 20171120

Call for Proposals 18A

The East Asian Observatory is happy to invite PI observing proposals for semester 18A at JCMT. Proposal submission is via the JCMT proposal handling system, Hedwig. For full details, and for proposal submission please see

https://proposals.eaobservatory.org/

The 18A Call for Proposals closes on the 15th of September, 2017.

If this is your first time using Hedwig, you should ‘Log in’ and generate an account. There is a Hedwig ‘Help’ facility at the upper right corner of each page, and individual Help tags in many other places.

Please contact us at helpdesk@eaobservatory.org if you have remaining questions.

– 20170815

Green Land Telescope Receiver testing progressing well at the JCMT

The Greenland Telescope (GLT) is a novel project; taking a 12-meter radio antenna – prototype for the Atacama Large Millimeter/Submillimeter Array (ALMA) project from Chile, and relocating this telescope to Greenland.

By repurposing this telescope astronomers can take advantage of the near-ideal conditions of the Arctic to study the Universe at specific radio frequencies. Whilst the telescope is being commissioned the initial receiver that will be used at the GLT is being tested at the JCMT in Hawaii. Last week the alignment of the instrument was performed this morning using the Sun as a source – and at the JCMT the first astronomical source for this instrument!

form more information visit: www.asiaa.sinica.edu.tw/project/vlbi.php and www.cfa.harvard.edu/greenland12m.

The GLT receiver installed inside the receiver cabin on the JCMT.

The inside of the GLT receiver

Delivery of the GLT receiver to JCMT

– 20170814

EAO Mid Term Review Committee meet in Hilo

The EAO Mid Term Review committee are meeting this week in Hilo to discuss the future of the JCMT. When the East Asian Observatory took over operation of the JCMT back in 2015 it was for an initial 5 years. Since that time we have had 5 semesters of great science. We have successfully completed three large programs (S2COSMOS, SCOPE, MALATANG). We have uncovered new star-forming events in the sub-mm. We have discovered stellar mass black holes. Our EAO regions have gained access to both Subaru and SMA. Recently we welcomed Vietnam as an observing partner in the JCMT. So much to celebrate!

– 20170727

EACOA Fellow, Tie Liu, welcomed to EAO Hilo

EACOA Fellow Dr Tie Liu is the first EACOA Fellow to come to work at the EAO office in Hilo, Hawaii from KASI.

Tie Liu’s main research interest is high-mass star formation and molecular clouds. Tie is the head of a large consortium undertaking the SCOPE, SCUBA-2 Continuum Observations of Pre-protostellar Evolution, program studying Planck cold clumps at JCMT. This program is now (as of July 2017) complete after 300 hours of SCUBA-2 time over the past year and a half.

Tie is now turning the focus of this study to follow-up observations with JCMT (e.g. POL-2) as well as many other telescopes (e.g., ALMA, SMA, NRO 45-m, KVN, FAST 500m …).

The Staff at EAO are pleased to welcome Tie Liu into the scientific division and hope many more astronomers decide to visit JCMT in the future as long term visitors, to engage directly with JCMT staff.

– 20170724

EAO/JCMT at APRIM

Astronomers from the East Asian Observatory/JCMT are in Taipei, Taiwan this week for the Asia Pacific Meeting of the International Astronomical Union (APRIM). If you are there please pop by our booth and say hello!

Maunakea Wonders – Teacher workshop success

For two days at the end of June EAO/JCMT hosted its first “Maunakea Wonders Teacher Workshop” primarily aimed at newly qualified teachers here on the island of Hawai’i. One day was spent learning about the cultural, environmental and astronomical role Maunakea plays combined with a trip to visit the CFHT (Canada France Hawai’i Telescope), and the JCMT. The second day was spent in the classroom discovering what Hawaii more about astronomy on the big island and the resources available to the community, teachers and students in Hawaii.

The workshop was kindly supported by MKAOC/CFHT and the University of Hawai’i Hilo’s School of Education.

First day of the Maunakea Wonders Teacher workshop included a trip to the Canada France Hawaii Telescope and then to JCMT.

Discovering cosmic distances

Discovering Teaching opportunities in Hawaii – with Gemini’s Starlab.

– 20170703

AstroDay 2017

EAO/JCMT staff once again volunteered their time to spend the day connecting with the community at the annual Hilo AstroDay. This year we explored the concept of magnetism and polarization in space.

For more about AstroDay please see:

A summary of the cryogenic work on SCUBA-2 this past winter

SCUBA-2 has been back on the sky for the past month producing excellent data, following both planned engineering down time to work on the instrument cryogenics and unplanned – to fix a vacuum leak.

The end of 2016 was a busy time for the EAO ETIS (Engineering, Technical Information Systems) staff. From the middle of the 2016 we were aware of a change in performance of one of the (two) pulse tube coolers (PTC) that cools the SCUBA-2 inner radiation shields and internal mirrors to below 4K. We were able to continue to use SCUBA-2 without any impact on the quality of the data, while we planned the major task of taking the 3 tonne instrument off the antenna and replacing both of the instrument PTC cold heads with new remote motor models.

The dilution fridge mixture was removed and the warm-up started on October 5th. SCUBA-2 was back on the sky with new PTCs and was operational by November 18th, 1 week ahead of schedule. However, during the subsequent cooldown, the cryostat vacuum was found not to be as good as expected.

Later in December, when we temporarily warmed-up (to 4K) to replace a small pump in the dilution refrigerator (DR) gas handling system – a regular procedure, the poor vacuum became a serious issue. Additional problems with pumps in the GHS and too high a pressure in the DR still prevented cooling below 1K. This is well above the operating temperature of the TES detectors.

The only course was to warm the instrument to ambient temperature and to then carry out extensive leak checking of the cryostat. A leak was found that we could fix. However, on detailed inspection, we discovered that the O-ring between the feedthrough and the top plate of the DR insert was cracked and would fail soon if we did not replace it.

Two weeks of skill and persistence was required to replace this O-ring to enable SCUBA-2 to be yet-again pumped, leak checked and cooled prior to the end of January. With the vacuum leak fixed, the cause of the second issue with the GHS that prevented cooling below 1K became apparent. This issue was caused by a particle filter on the input of the pump. After removing the offending filter SCUBA-2 was operational by February 5th.

The loss of an additional 6 weeks of observing with SCUBA-2 impacted our users. However, by catching the failing O-ring before a total loss of vacuum, we avoided the potential for more serious consequences to the instrument and a bigger disruption of the observing schedule. An extended period of good stable weather in recent weeks has allowed some of the affected programs to makeup for the missed nights.

In addition to the cryogenic work, new improved thermal blocking filters have been installed between the instrument window and the band defining filters for the detector arrays. We are now investigating the change in optical power on the detector arrays, to see if this has modified the stray light environment within the 4K box and improved SCUBA-2’s performance.

Jamie Cookson works on the repair of SCUBA-2.

– 20170407

Blue skies for Venus observations

Over the past two weekends the JCMT has been open and observing during the day. These daytime observations are needed to observe the middle atmosphere (altitude 70-110 km) of Venus.

The aim is to better understand atmospheric physics and chemistry. The way to advance understanding of fundamental atmospheric physics and chemistry in general is to study the atmospheres of individual planets – specifically in this case Venus!

The JCMT is used for this study because sub-millimeter spectroscopy is uniquely powerful for investigations of this altitude range on Venus. JCMT’s location on Maunakea, its ability to safely point arbitrarily close to the sun, and its observation flexibility (capability to modify observing strategies in as little as 5 minutes, during the observations) make it uniquely well-suited to Venus research.

Here is a video of the sky above the EAO office in Hilo – can you spot Venus? If you want to see what the weather is like on Maunakea click here. For a link to the EAO Hilo office weather click here.

-2017/03/28

Electronics Engineer job opening

We are currently recruiting for an Electronic Engineer to join the EAO/JCMT  Engineering Group. This group ensures that the telescopes and associated instruments are at a high level of operational readiness at all times. They apply technical knowledge in support of the testing, modification, maintenance, repair, and upgrading of EAO mechanical, electronic and electrical systems.

CLOSING DATE: March 24, 2017

For more information visit the EAO Jobs homepage.

– 2017/02/24

JCMT 2017 Users Meeting – see you again next year!

The 2017 JCMT Users meeting was held in Nanjing, China. The two day meeting was held on Monday, 13th and Tuesday 14th of February. An additional 1 half-day data reduction workshop was held immediately after the meeting on Wednesday 15th of February. The meeting was well attended and all talks are now available online here. We hope you have a good productive 2017 and hope to see you at our JCMT 2018 Users meeting in South Korea next January.

– 2017/02/21

Call for proposals 17B and Large Programs (II)

The East Asian Observatory is happy to invite PI observing proposals for semester 17B at JCMT (for details see here). Semester 17B runs from 01 August 2017 to 31 January 2018.

In addition the East Asian Observatory is happy to accept proposals for Large Programs – running from 01 August 2017 to 31 January 2019. More details about the Large Programs (II) call can be found here.

You can reach the proposal handling system, Hedwig,  and find complete details of this Call at:

https://proposals.eaobservatory.org/

Any further questions should be directed to our help desk: helpdesk@eaobservatory.org

If this is your first visit to Hedwig, you should go to ‘Log in’ and generate an account. There is a ‘Help’ facility at the upper right corner, and individual Help tags at many other places.

The 17B Call and Large Program (II) call for Proposals closes on the 15th of March 2017.

– 2017/02/13

17B semester Call at the Subaru Telescope is now open

The East Asian Observatory is pleased to partner with the Subaru Telescope to enable astronomers  from an East Asian participant region to have access to Subaru time. The East Asian Observatory proposals are considered by the Subaru scientific panel alongside regular Subaru proposals, with a guaranteed award of time of a total of 3 nights of observing in the semester.

The 17B semester Call at the Subaru Telescope is now open, click here for more details.

– 2017/02/08

Support Astronomer job opening

The EAO/JCMT is currently seeking an astronomer to join its team of support scientists. Duties include: Assists visiting astronomers in obtaining high-quality observational data; provides technical, scientific, and logistical support to astronomers before, during, and after their observing runs, and assists with their data analysis. Performs general and specific support of the telescope operations and/or instruments and their development. Undertakes a program of astronomical research, which may or may not be related to using the James Clerk Maxwell Telescope (JCMT).

CLOSING DATE: February 28, 2017

For more information visit the EAO Jobs homepage.

– 2017/02/02

Announcing the JCMT Large Programs (II)

The East Asian Observatory is pleased to provide an early announcement of the second Call for JCMT Large Programs. This information is being provided ahead of the opening of the Call in order for current and new teams to pursue discussion and planning. Submissions will be accepted from February 15th up until the March 15th deadline. This will coincide with the 17B PI Call.

For more information please visit:
http://www.eaobservatory.org/jcmt/proposals/large-programs-call-ii/

To help cultivate ideas discussions on potential new JCMT Large Programs EAO have provided a wiki for interested JCMT users:
https://www.eao.hawaii.edu/Large-Programs-Call-2017/

Please also be reminded that the 2017 JCMT Users meeting will be held February 13th and 14th in Nanjing, China. For more details on the Users meeting please visit:
http://www.eaobservatory.org/jcmt/science/nanjing2017/

– 2016/11/15

JCMT holds reduction workshop in Shanghai

At the start of October the JCMT held a Data Reduction workshop for JCMT astronomers. The workshop was held at the Shanghai Astronomical Observatory in China. Over 20 astronomers attended with a variety of backgrounds. The material presented at the workshop can be found here. Information on past workshops can be found here. If you are interested in having JCMT staff visit your institution for such an event please contact helpdesk@eaobservatory.org.

Participants at the JCMT reduction workshop, China, October 2016.

Participants at the JCMT reduction workshop, China, October 2016.

– 2016/10/25

Users Meeting – Nanjing 2017

JCMT-UsersMeeting-2017-annoucement

Dear JCMT users

You are invited to attend the second EAO JCMT Users Meeting. This 2017 JCMT Users meeting will be held in Nanjing, China. The two day meeting will be held on Monday, 13th and Tuesday 14th of February. An additional 1 half-day data reduction workshop will be held immediately after the meeting on Wednesday 15th of February.

To register for the 2017 Users Meeting please use the online registration form.

Note: If you cannot access the registration form (which is a Google document), then please use this text form and email to jcmt_um_2017 “at” eaobservatory.org.

Note: All participants coming from outside of mainland China will likely require a visa. Therefore to  request a letter of invitation to attend this meeting please email:  jcmt_um_2017 “at” eaobservatory.org This process can be lengthy. You are encouraged to request this invitation letter and begin the visa application process as soon as possible.

For more information visit: www.eaobservatory.org/jcmt/science/nanjing2017/

– 2016/09/13

JCMT workshop, Shanghai, October 16th 2016

The JCMT would like to announce that the Shanghai Astronomical Observatory will hold 1-day workshop on JCMT data reductions and analysis on Oct. 16 at SHAO in Shanghai. JCMT staff, Dr. Harriet Parsons and Dr. Mark Rawlings, will give these tutorials.  The agenda can be found below.

This workshop is scheduled before JINGLE team meeting in Shanghai (Oct. 17-18) and MALATANG team meeting in Nanjing (Oct. 19-21) as a united conference. We aim to open this tutorial to all interested researchers and students, and high priority will be given to members of JINGLE, MALATANG and other JCMT large programs due to space limitation.  If you are interested to attend, please contact Ting Xiao (xiaoting@shao.ac.cn) as soon as possible to help us get a rough head account.

Agenda for the workshop on Oct. 16:

Morning session:

  • introduction to STARLINK
  • introduction to HARP and RxA3m
  • Heterodyne beginner
  • Heterodyne advanced

Afternoon session:

  • introduction to SCUBA-2
  • SCUBA-2 basic
  • SCUBA-2 advanced

In addition if requested we could cover any of the following (time permitting):

  • Hedwig session – Proposal submission to the JCMT
  • JCMTOT – how to submit JCMT project MSBs
  • POL-2 introduction and basic data reduction in an extended session
  • General JCMT project support for existing users

 

If you are interested in any additional topics listed above, please inform us in the email.

– 2016/09/09

Call for Proposals 17A

The East Asian Observatory is happy to invite PI observing proposals for semester 17A at JCMT (for details see here).

Semester 17A runs from 01 February 2017 to 31 July 2017. You can reach the proposal handling system, Hedwig,  and find complete details of this Call at:

https://proposals.eaobservatory.org/

Any further questions should be directed to our helpdesk:

helpdesk@eaobservatory.org

If this is your first visit to Hedwig, you should go to ‘Log in’ and generate an account. There is a ‘Help’ facility at the upper right corner, and individual Help tags at many other places.

The 17A Call for Proposals closes on the 15th of September 2016.

NEW: The East Asian Observatory invites requests for Urgent Observing at any time – and you can now submit these request via a special Call in our Hedwig proposal system. You can find details here.

Constraints and guidance on applicant eligibility, the available instrumentation, the required content of the proposal, and other aspects of the proposal are as described in the Call for Proposals for the current semester – except as itemized below.

Urgent Requests should clearly describe the following:
1. The urgency for the observations, and why a response to the regular, semi-annual Call for Proposals is/was inappropriate.
2. The time span over which observations may be made or the specific times at which they must be made.
3. The timescale for analysis of resulting data and for publication thereof; which ought to be proportionately urgent . . .

The above information should appear in the Scientific Justifications section of the proposal; itemized as above, please. If approved, proposals will be graded with respect to the approved projects in the current semester and executed via JCMT’s Flexible Observing scheme.

– 2016/08/15

Face-to- face workshop for “SAMPLING-TOP- SCOPE”, December 14-16, Beijing -1 st announcement

The Planck satellite has discovered more than ten thousand Galactic cold clumps, the so-called “Planck Galactic Cold Clumps” (PGCCs). The PGCC catalog, covering the whole sky, hence probes wildly different environments, and represents a real goldmine for investigations of the early phases of star formation. After the successful start of the pioneer survey with the PMO 14-m telescope, we are conducting a joint survey (“SAMPLING-TOP- SCOPE”) towards 1000-2000 PGCCs with the SMT 10-m, TRAO 14-m, and JCMT 15-m telescopes. “SAMPLING” (SMT “All-sky” Mapping of PLanck Interstellar Nebulae in the Galaxy) is an ESO public survey inJ=2-1 12CO/13CO emission using the SMT 10-m telescope. “TOP” (TRAO Observations of Planck cold clumps) aims at an unbiased J=1-0 12CO/13CO survey of 2000 Planck Galactic Cold Clumps with the Taeduk Radio Astronomy Observatory 14-meter telescope. “SCOPE” (SCUBA-2 Continuum Observations of Pre-protostellar Evolution) is a legacy survey using SCUBA-2 at the James Clerk Maxwell Telescope (JCMT) of the East Asia Observatory (EAO) to survey 1000 Planck galactic cold clumps at 850 micron. We are also actively developing follow-up observations towards the SCUBA-2 cores detected in “SCOPE” with other ground-based telescopes (e.g. KVN 21-m, NRO 45-m, Effelsberg 100-m, Arecibo 300-m, SMA, and ALMA). Through these observations, we will study how dense cores form and how star formation varies as a function of environment, the universality of filaments in the cold ISM and their roles in generating dense cores, the existence of a density threshold for dense core formation, how dust properties change in different environments, and how dust properties affect the chemical evolution of dense cores.

To promote collaborations among team members on using the survey data for science, we will hold a face-to-face workshop on Dec. 14-16 at Peking University, Beijing, China. To indicate your interest in attending the workshop, please sign your name on the following doodle page:

http://doodle.com/poll/443gppgf4mc4y5rc

More details of the workshop can be found on our wiki page:

https://topscope.asiaa.sinica.edu.tw/tiki/tiki-index.php

Program (preliminary)

Dec 14: registration and reception
Dec 15: talks and discussions
Dec 16: talks and discussions

SOC: Tie Liu; Mark Thompson; Sheng-Yuan Liu; Gary Fuller; Ken Tatematsu; Yuefang Wu; Di Li; James di Francesco; Kee-Tae Kim; Ke Wang; Isabelle Ristorcelli; Mika Juvela

LOC: Jie Yao; Chao Zhang; Shuxian Li; Huawei Zhang; Yuefang Wu (ywu@pku.edu.cn); Tie Liu (liutiepku@gmail.com)

– 2016/07/21

JCMT Legacy Release 1 (SCUBA-2 850µm)

The JCMT is pleased to announce that its JCMT Legacy Release 1 (SCUBA-2 850µm) data set is now publicly available. This project makes available to the community uniformly reduced observations of most public SCUBA-2 850µm observations taken before 2013-08-01, as well as coadds and emission catalogs.  Please see our web page on the JCMT-LR1 for more details.

JCMT-LR1 (September 2015: SCUBA-2 850µm)

  • Public 850µm SCUBA-2 observations taken between 2011-02-01 and 2013-08-01.
  • Gridded onto HEALPix tiles using the HPX projection.
  • All reduced using the same SMURF makemap dimmconfig ‘jsa_generic’ (included in the Starlink 2015A release)
  • Coadds of all the reduced non-pointing observations which passed Quality Assurance coadded onto a single tile.
  • Catalogues of detected (>5σ) regions of contiguous emission (extents) towards each tile.
  • Catalogues of local peaks within the extents of each tile.
  • Over 2000 hours of observing time included.
  • Search CADC with proposal ID=’JCMT-LR1′ to view the coadds and catalogues.

 

Call for Proposals 16A

The East Asian Observatory is happy to invite PI observing proposals for semester 16A at JCMT (for details see here).

Semester 16A runs from 01 February 2016 to 31 July 2016. We are launching this Call through a new proposal handling system: Hedwig. You can reach Hedwig and find complete details of this Call at:

https://proposals.eaobservatory.org/

At your first visit, you should go to ‘Log in’ and generate an account. We hope you will find Hedwig easy to use: there is a ‘Help’ facility at the upper right corner, and individual Help tags at many places on the proposal pages.

The 16A Call for Proposals closes on the 22nd of September, 2015.

In addition, it should be noted that we will embark on survey observing in the 16A semester – and as such, PI time is more limited than the current semester, however we still strongly encourage PI submissions as at least 800 hours of time will be available to EAO and partner region investigators. Some alterations have also been made to the PI eligibility for Canada – please see the Call for details.

New Horizons for the JCMT with the East Asian Observatory: Latest Science from the JCMT

2015 IAU Splinter Session

August 6th 6pm-8pm  

Room 312 Hawaii Convention Center


The East Asian Observatory has forged a new path for the JCMT following the successful transfer of operation to EAO in March 2015. Operations immediately resumed with an EAO Pilot Science semester initiated in late March, taking successful science with JCMT’s signature instruments, and recommencing commissioning of the additional instrument elements (Pol-2 and FTS-2) for SCUBA-2. In this special session, we will present the latest results from the JCMT Legacy Surveys, completed in early 2015. We will also show some of the recent results from Pilot Science, and discuss the plans EAO and its partners have for continuing to keep the JCMT at the cutting edge of sub-millimeter science.

Organizer: Jessica Dempsey


 6:00pm: Welcome and introduction (Paul Ho)

JCMT Legacy Science: New Insights
6:10pm: The Cosmology Legacy Survey (Jim Geach)
6:25pm: Current and future directions in star formation research with the JCMT (Derek Ward-Thompson)
6:40pm: The Nearby Galaxies Survey (Christine Wilson)
6:55pm: The JCMT Legacy Archive (Sarah Graves)

EAO Pilot Science
7:05pm: Highlights from Taiwan (Sheng-Yuan Liu)
7:15pm: Highlights from China (Yu Gao)
7:25pm: Highlights from Korea (Woojin Kwon)

Instrument Directions for JCMT:
7:35pm – 8:00pm: Panel discussion and question and answer session on future instrument upgrades and new instrument concepts.


First Day of Operations

It is with great enthusiasm that the East Asian Observatory (EAO) announces its first day of operations of the James Clerk Maxwell Telescope (JCMT). The JCMT is the largest astronomical telescope in the world designed to operate in the sub-millimetre wavelength region of the spectrum. EAO is now in charge of JCMT operations in partnership with the UK and Canadian research communities.

Paul Ho the Director General of the East Asian Observatory said “It is a great opportunity for the East Asian Observatory to take over the operation of JCMT which is an excellent facility with extremely powerful instrumentation. Many of our astronomers in East Asia have long been involved in pursuing the most important problems in astronomy by utilizing the amazing telescopes on top of Mauna Kea. It is a great privilege for us to be able to work at the best site for ground based astronomy in the Northern Hemisphere. For all of us at the JCMT, we look forward to an exciting future in continuing to deliver frontier science to our communities.”

EAO would like to thank the people of Hawaii for allowing our astronomers to work on top of one of the most beautiful places on earth.

JCMT_Transfer_small_038

The JCMT handover signing: Back row left to right: Jun Yan, Director, National Astronomical Observatories of China, Dr Guenther Hasinger, Director, Institute for Astronomy, University of Hawaii, Professor Gary Davis, former Director of the Joint Astronomy Centre. Front row left to right: Dr Paul Ho, Director General, East Asian Observatory, Professor Matt Platz , Assistant Chancellor for Academic Affairs, University of Hawaii, Professor John Womersley, Chief Executive STFC. (Credit: Hollyn Johnson/Professor Gary Davis/STFC)

As a memento of this transfer Will Montgomerie, an operator at the JCMT, has released this beautiful night sky time-lapse montage featuring the Telescope:

www.vimeo.com/williammontgomerie/jcmtstarlapse

The Science and Technology Facilities Council of the UK have also issued their own statement about this occasion. The statement can be found here.