{"id":534,"date":"2014-11-20T14:40:16","date_gmt":"2014-11-21T00:40:16","guid":{"rendered":"http:\/\/www.eaobservatory.org\/jcmt\/?page_id=534"},"modified":"2021-11-08T11:15:20","modified_gmt":"2021-11-08T21:15:20","slug":"harp-standards","status":"publish","type":"page","link":"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/calibration\/harp-standards\/","title":{"rendered":"HARP Standards"},"content":{"rendered":"
\n

The figures below show the results of CO(3-2) observations of the standard sources CRL2688, CRL618, and IRC+10216, which most often are used to check the performance of the JCMT. Left is the integrated intensity and right the peak antenna temperature (only for 1000 MHz because the ORAC-DR output file log.standard currently lists the highest noise peak in the recipe REDUCE_STANDARD). Observations made in good weather (tau<0.08) are indicated in blue; those made in worse conditions are indicated in red. All data was taken at night time between 19:00-9:00 (HST).<\/p>\n

Note that HARP standard observations (and therefore all HARP observations) made before 20090521 are less reliable than those after that date because of a change in the pointing method. Before this date HARP pointing<\/a> was done in AzEl coordinates whereas science observations were done in RaDec coordinates. This could cause a rotation of the K-mirror and a considerable pointing error. After 20090521 pointing was done in RaDec coordinates. A good pointing model for the K-mirror<\/a> was only obtained on May 1, 2014.<\/p>\n<\/div>\n

 <\/p>\n

\"\"<\/a> \"\"<\/a><\/p>\n

\"\"<\/a> \u00a0\"\"<\/a><\/p>\n

\"\"<\/a> \"\"<\/a><\/p>\n

 <\/p>\n

\n

The table below contains the average spectra of all good quality observations obtained between April 2007 and November 2018.<\/p>\n

Good quality means line temperatures which are internally consistent and also consistent with RxB3\/DAS data (if existing), and with good baselines.<\/p>\n

The spectra were added with ORACDR (using the narrowline or broadline recipe. In both recipes a first order baseline is subtracted.<\/p>\n

For the moment only 250 and 1000 MHz bandwidth spectra were summed (resolution 30 and 488 kHz). The numbers in brackets are the peak TA<\/sub>*<\/sup> (when necessary after rebinning) and the number of good observations existing for the particular combination.<\/p>\n

For C18<\/sup>O and 13<\/sup>CO 250 MHz observations were added where these lines were observed in two subband mode (resolution 60 kHz). These are distinguished by an s.<\/p>\n

All spectra show identifications of lines in the band. The identified lines are those which are listed in JCMTOT (and therefore in SPLAT).<\/p>\n

The sdf files with the spectra are available on request.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
HARP Standard Spectra<\/th>\n<\/tr>\n
Species<\/th>\nC18<\/sup>O<\/th>\n13<\/sup>CO<\/th>\nCH3<\/sub>OH<\/th>\nCS<\/th>\nCO<\/th>\nHCN<\/th>\nHCO+<\/sup><\/th>\nH2<\/sub>CO<\/th>\nN2<\/sub>H+<\/sup><\/th>\n<\/th>\n<\/tr>\n
Transition<\/th>\n3-2<\/th>\n3-2<\/th>\n70<\/sub>-60<\/sub>A<\/th>\n7-6<\/th>\n3-2<\/th>\n4-3<\/th>\n4-3<\/th>\n505<\/sub>-404<\/sub><\/th>\n4-3<\/th>\n<\/th>\n<\/tr>\n
Frequency<\/th>\n329.331<\/th>\n330.587<\/th>\n338.410<\/th>\n342.883<\/th>\n345.796<\/th>\n354.506<\/th>\n356.734<\/th>\n362.736<\/th>\n372.673<\/th>\nSource<\/th>\n<\/tr>\n
<\/th>\n<\/tr>\n
W3(OH)<\/th>\n1000\u00a0(6.70K;\u00a02)<\/a>
\n250\u00a0(6.55K;\u00a013)<\/a>
\n250s\u00a0(6.37K;\u00a040)<\/a><\/td>\n		1000\u00a0(13.4K;\u00a04)<\/a>
\n250\u00a0(15.6K;\u00a06)<\/a>
\n250s\u00a0(14.0K;\u00a041)<\/a><\/td>\n		1000\u00a0(4.66K;\u00a06)<\/a>
\n250\u00a0(4.12K;\u00a04)<\/a><\/td>\n		1000\u00a0(7.38K;\u00a03)<\/a>
\n250\u00a0(8.84K;\u00a02)<\/a><\/td>\n		1000\u00a0(23.0K;\u00a038)<\/a>
\n250\u00a0(22.6K;\u00a024)<\/a><\/td>\n		1000\u00a0(7.10K;\u00a05)<\/a>
\n250\u00a0(6.88K;\u00a012)<\/a><\/td>\n		1000\u00a0(11.0K;\u00a016)<\/a>
\n250\u00a0(10.9K;\u00a018)<\/a><\/td>\n		1000\u00a0(3.93K;\u00a04)<\/a>
\n250\u00a0(4.34K;\u00a02)<\/a><\/td>\n		1000\u00a0(4.26K;\u00a06)<\/a>
\n250\u00a0(4.34K;\u00a016)<\/a><\/td>\n		W3(OH)<\/th>\n<\/tr>\n
L1551-IRS5<\/th>\n1000\u00a0(4.03K;\u00a01)<\/a>
\n250\u00a0(4.70K;\u00a02)<\/a>
\n250s\u00a0(5.03K;\u00a03)<\/a><\/td>\n		1000\u00a0(3.59K;\u00a03)<\/a>
\n250\u00a0(4.91K;\u00a01)<\/a>
\n250s\u00a0(5.12K;\u00a04)<\/a><\/td>\n		1000\u00a0(-;\u00a01)<\/a>
\n250\u00a0(-;\u00a01)<\/a><\/td>\n		1000\u00a0(1.34K;\u00a01)<\/a>
\n250\u00a0(1.51K;\u00a01)<\/a><\/td>\n		1000\u00a0(6.91K;\u00a03)<\/a>
\n250\u00a0(9.10K;\u00a03)<\/a><\/td>\n		1000\u00a0(1.74K;\u00a02)<\/a>
\n250\u00a0(1.40K;\u00a01)<\/a><\/td>\n		1000\u00a0(6.98K;\u00a02)<\/a>
\n250\u00a0(8.53K;\u00a05)<\/a><\/td>\n		1000\u00a0(1.86K;\u00a01)<\/a>
\n250\u00a0(2.28K;\u00a01)<\/a><\/td>\n		1000\u00a0(0.69K;\u00a01)<\/a>
\n250\u00a0(0.78K;\u00a01)<\/a><\/td>\n		L1551-IRS5<\/th>\n<\/tr>\n
CRL618<\/th>\n1000\u00a0(0.16K;\u00a01)<\/a><\/td>\n1000\u00a0(0.99K;\u00a011)<\/a>
\n250\u00a0(0.99K;\u00a013)<\/a><\/td>\n		1000\u00a0(0.18K;\u00a02) <\/a><\/td>\n1000\u00a0(0.12K;\u00a01)<\/a><\/td>\n1000\u00a0(4.61K;\u00a0216)<\/a>
\n250\u00a0(4.54K;\u00a0135)<\/a><\/td>\n		1000\u00a0(2.01K;\u00a060)<\/a>
\n250\u00a0(1.95K;\u00a014)<\/a><\/td>\n		1000\u00a0(1.26K;\u00a019)<\/a>
\n250\u00a0(1.27K;\u00a021)<\/a><\/td>\n		1000\u00a0(1.36K;\u00a04)<\/a>
\n250\u00a0(1.20K;\u00a03)<\/a><\/td>\n		250\u00a0(-;\u00a02)<\/a>
\n1000 (0.35; 1)<\/a><\/td>\n		CRL618<\/th>\n<\/tr>\n
OMC1<\/th>\n1000\u00a0(12.5K;\u00a01)<\/a>
\n250\u00a0(11.1K;\u00a01)<\/a>
\n250s\u00a0(11.1K;\u00a04)<\/a><\/td>\n		1000\u00a0(38.0K;\u00a01)<\/a>
\n250\u00a0(43.0K;\u00a05)<\/a>
\n250s\u00a0(44.4K;\u00a04)<\/a><\/td>\n		1000\u00a0(33.3K;\u00a01)<\/a>
\n250\u00a0(20.3K;\u00a01)<\/a><\/td>\n		1000\u00a0(35.8K;\u00a01)<\/a>
\n250\u00a0(27.5K;\u00a01)<\/a><\/td>\n		1000\u00a0(87.8K;\u00a013)<\/a>
\n250\u00a0(87.3K;\u00a010)<\/a><\/td>\n		1000\u00a0(46.3K;\u00a04)<\/a>
\n250\u00a0(46.9K; 2)<\/a><\/td>\n		1000\u00a0(31.9K;\u00a05)<\/a>
\n250\u00a0(30.8K;\u00a06)<\/a><\/td>\n		1000\u00a0(24.6K;\u00a02)<\/a>
\n250\u00a0(29.9K;\u00a01)<\/a><\/td>\n		1000\u00a0(8.60K;\u00a02)<\/a><\/td>\nOMC1<\/th>\n<\/tr>\n
N2071IR<\/th>\n1000\u00a0(4.46K;\u00a03)<\/a>
\n250\u00a0(4.50K;\u00a016)<\/a>
\n250s\u00a0(4.44K;\u00a022)<\/a><\/td>\n		1000\u00a0(11.4K;\u00a01)<\/a>
\n250\u00a0(11.4K;\u00a03)<\/a>
\n250s\u00a0(12.0K;\u00a021)<\/a><\/td>\n		1000\u00a0(2.03K;\u00a08)<\/a>
\n250\u00a0(1.88K;\u00a02)<\/a><\/td>\n		1000\u00a0(6.40K;\u00a01)<\/a>
\n250\u00a0(6.39K;\u00a02)<\/a><\/td>\n		1000\u00a0(36.7K;\u00a020)<\/a>
\n250\u00a0(36.8K;\u00a029)<\/a><\/td>\n		1000\u00a0(8.93K;\u00a06)<\/a>
\n250\u00a0(9.33K;\u00a07)<\/a><\/td>\n		1000\u00a0(18.2K;\u00a08)<\/a>
\n250\u00a0(18.3K;\u00a017)<\/a><\/td>\n		1000\u00a0(5.14K;\u00a03)<\/a><\/td>\n1000\u00a0(7.39K;\u00a05)<\/a>
\n250\u00a0(7.58K;\u00a016)<\/a><\/td>\n		N2071IR<\/th>\n<\/tr>\n
OH231.8<\/th>\n1000 (0.18K; 4)<\/a>
\n250s (-;\u00a01)<\/a><\/td>\n		1000\u00a0(0.87K;\u00a01)<\/a>
\n250s\u00a0(1.22K;\u00a01)<\/a><\/td>\n		1000 (-;\u00a01)<\/a><\/td>\n1000\u00a0(0.24K;\u00a02)<\/a><\/td>\n1000\u00a0(1.91K;\u00a01)<\/a>
\n250\u00a0(1.99K;\u00a01)<\/a><\/td>\n		1000\u00a0(0.60K;\u00a04)<\/a>
\n250\u00a0(0.65K;\u00a01)<\/a><\/td>\n		1000\u00a0(0.28K;\u00a01)<\/a><\/td>\n1000\u00a0(0.37K;\u00a01)<\/a><\/td>\n(0)<\/td>\nOH231.8<\/th>\n<\/tr>\n
IRC+10216<\/th>\n1000\u00a0(0.32K;\u00a04)<\/a>
\n250\u00a0(0.36K;\u00a02)<\/a>
\n250s\u00a0(0.35K;\u00a05)<\/a><\/td>\n		1000\u00a0(5.10K;\u00a08)<\/a>
\n250 (5.36K;\u00a012)<\/a>
\n250s\u00a0(5.40K;\u00a05)<\/a><\/td>\n		1000\u00a0(0.59K;\u00a02)<\/a>
\n250\u00a0(0.57K;\u00a01)<\/a><\/td>\n		1000\u00a0(13.9K;\u00a08)<\/a>
\n250\u00a0(13.2K;\u00a01)<\/a><\/td>\n		1000\u00a0(32.9K;\u00a0242)<\/a>
\n250\u00a0(33.4K;\u00a085)<\/a><\/td>\n		1000\u00a0(36.8K;\u00a047)<\/a>
\n250\u00a0(36.2K;\u00a036)<\/a><\/td>\n		1000\u00a0(4.43K;\u00a07)<\/a><\/td>\n1000\u00a0(7.44K;\u00a02)<\/a>
\n250\u00a0(2.14K;\u00a02)<\/a><\/td>\n		1000\u00a0(0.15?;\u00a02)<\/a><\/td>\nIRC+10216<\/th>\n<\/tr>\n
16293-2422<\/th>\n1000\u00a0(6.59K;\u00a03)<\/a>
\n250\u00a0(6.53K;\u00a015)<\/a>
\n250s\u00a0(6.50K;\u00a044)<\/a><\/td>\n		1000\u00a0(12.8K;\u00a05)<\/a>
\n250\u00a0(13.4K;\u00a05)<\/a>
\n250s\u00a0(13.2K;\u00a058)<\/a><\/td>\n		1000\u00a0(1.24K;\u00a08)<\/a>
\n250\u00a0(1.41K;\u00a01)<\/a><\/td>\n		1000\u00a0(6.84K;\u00a04)<\/a>
\n250\u00a0(7.58K;\u00a02)<\/a><\/td>\n		1000\u00a0(20.2K;\u00a097)<\/a>
\n250\u00a0(21.2K;\u00a091)<\/a><\/td>\n		1000 (8.06K;\u00a08)<\/a>
\n250\u00a0(8.96K;\u00a013)<\/a><\/td>\n		1000\u00a0(22.4K;\u00a014)<\/a>
\n250\u00a0(24.0K;\u00a044)<\/a><\/td>\n		1000\u00a0(4.20K;\u00a04)<\/a>
\n250\u00a0(4.40K;\u00a01)<\/a><\/td>\n		1000\u00a0(1.65K;\u00a04)<\/a>
\n250\u00a0(1.28K;\u00a026)<\/a><\/td>\n		16293-2422<\/th>\n<\/tr>\n
NGC6334I<\/th>\n1000\u00a0(12.8K;\u00a01)<\/a>
\n250\u00a0(11.9K;\u00a01)<\/a>
\n250s\u00a0(13.1K;\u00a01)<\/a><\/td>\n		1000\u00a0(20.9K;\u00a01)<\/a>
\n250\u00a0(23.0K;\u00a01)<\/a>
\n250s\u00a0(23.3K;\u00a02)<\/a><\/td>\n		1000\u00a0(9.21K;\u00a03)<\/a>
\n250\u00a0(8.94K;\u00a01)<\/a><\/td>\n		1000\u00a0(15.6K;\u00a01)<\/a>
\n250\u00a0(16.3K;\u00a01)<\/a><\/td>\n		1000\u00a0(37.0K;\u00a03)<\/a>
\n250\u00a0(35.5K;\u00a03) <\/a><\/td>\n		1000\u00a0(7.65K;\u00a01)<\/a>
\n250\u00a0(8.31K;\u00a01)<\/a><\/td>\n		1000\u00a0(12.8K;\u00a02)<\/a>
\n250\u00a0(12.4K;\u00a02)<\/a><\/td>\n		1000\u00a0(6.04K;\u00a01)<\/a>
\n250\u00a0(6.25K;\u00a01)<\/a><\/td>\n		1000\u00a0(5.00K;\u00a01)<\/a><\/td>\nNGC6334I<\/th>\n<\/tr>\n
G34.3<\/th>\n1000\u00a0(15.3K;\u00a02)<\/a>
\n250\u00a0(15.0K;\u00a08)<\/a>
\n250s\u00a0(15.2K;\u00a057)<\/a><\/td>\n		1000\u00a0(24.0K;\u00a08)<\/a>
\n250\u00a0(23.4K;\u00a05)<\/a>
\n250s\u00a0(25.3K;\u00a065)<\/a><\/td>\n		1000\u00a0(4.93K;\u00a015)<\/a>
\n250\u00a0(5.66K;\u00a01)<\/a><\/td>\n		1000\u00a0(12.4K;\u00a01)<\/a>
\n250\u00a0(12.2K;\u00a02)<\/a><\/td>\n		1000\u00a0(28.6K;\u00a055)<\/a>
\n250\u00a0(28.8K;\u00a063)<\/a><\/td>\n		1000\u00a0(12.1K;\u00a04)<\/a>
\n250\u00a0(11.1K;\u00a09)<\/a><\/td>\n		1000\u00a0(15.6K;\u00a010)<\/a>
\n250\u00a0(16.7K;\u00a040)<\/a><\/td>\n		1000\u00a0(7.70K;\u00a04)<\/a>
\n250\u00a0(8.09K;\u00a03)<\/a><\/td>\n		1000\u00a0(2.01K;\u00a05)<\/a>
\n250\u00a0(1.79K;\u00a07)<\/a><\/td>\n		G34.3<\/th>\n<\/tr>\n
W75N<\/th>\n1000\u00a0(12.0K;\u00a08)<\/a>
\n250\u00a0(11.5K;\u00a011)<\/a>
\n250s\u00a0(12.1K;\u00a030)<\/a><\/td>\n		1000\u00a0(24.3K;\u00a03)<\/a>
\n250\u00a0(25.0K;\u00a06)<\/a>
\n250s\u00a0(23.3K;\u00a028)<\/a><\/td>\n		1000\u00a0(4.20K;\u00a014)<\/a>
\n250\u00a0(3.64K;\u00a09)<\/a><\/td>\n		1000\u00a0(8.60K;\u00a05)<\/a>
\n250\u00a0(7.48K;\u00a02)<\/a><\/td>\n		1000\u00a0(36.2K;\u00a040)<\/a>
\n250\u00a0(36.5K;\u00a024)<\/a><\/td>\n		1000\u00a0(12.9K;\u00a010)<\/a>
\n250\u00a0(12.9K;\u00a021)<\/a><\/td>\n		1000\u00a0(23.2K;\u00a036)<\/a>
\n250\u00a0(23.7K;\u00a019)<\/a><\/td>\n		1000\u00a0(6.94K;\u00a08)<\/a>
\n250\u00a0(6.35K;\u00a01)<\/a><\/td>\n		1000\u00a0(4.41K;\u00a09)<\/a>
\n250\u00a0(4.54K;\u00a012)<\/a><\/td>\n		W75N<\/th>\n<\/tr>\n
CRL2688<\/th>\n1000\u00a0(0.41K;\u00a01)<\/a>
\n250\u00a0(0.32K;\u00a04)<\/a>
\n250s (0.36K; 14)<\/a><\/td>\n		1000\u00a0(2.92K;\u00a024)<\/a>
\n250\u00a0(2.79K;\u00a018)<\/a>
\n250s (2.82K; 11)<\/a><\/td>\n		1000\u00a0(-;\u00a01)<\/a><\/td>\n1000\u00a0(1.20K;\u00a04)<\/a>
\n250 (1.26K; 5)<\/a><\/td>\n		1000\u00a0(9.94K;\u00a0227)<\/a>
\n250\u00a0(9.81K;\u00a0141)<\/a><\/td>\n		1000\u00a0(7.97K;\u00a044)<\/a>
\n250\u00a0(8.03K;\u00a038)<\/a><\/td>\n		1000\u00a0(1.06;\u00a04)<\/a><\/td>\n1000\u00a0(1.26K;\u00a02)<\/a>
\n250\u00a0(1.18K;\u00a01)<\/a><\/td>\n		1000\u00a0(0.34K;\u00a01)<\/a><\/td>\nCRL2688<\/th>\n<\/tr>\n
NGC7027<\/th>\n1000\u00a0(-;\u00a01)<\/a><\/td>\n1000\u00a0(0.64K;\u00a01)<\/a><\/td>\n1000\u00a0(-;\u00a01)<\/a><\/td>\n1000\u00a0(-;\u00a01)<\/a><\/td>\n1000\u00a0(12.6K;\u00a08)<\/a>
\n250\u00a0(11.7K;\u00a04)<\/a><\/td>\n		1000\u00a0(0.62K;\u00a02)<\/a><\/td>\n1000\u00a0(1.18K;\u00a01)<\/a>
\n250\u00a0(1.36K;\u00a01)<\/a><\/td>\n		1000\u00a0(-;\u00a01)<\/a><\/td>\n1000\u00a0(-;\u00a01)<\/a><\/td>\nNGC7027<\/th>\n<\/tr>\n
N7538IRS1<\/th>\n1000\u00a0(6.70K;\u00a01)<\/a>
\n250\u00a0(5.95K;\u00a02)<\/a>
\n250s\u00a0(6.48K;\u00a038)<\/a><\/td>\n		1000\u00a0(15.7K;\u00a06)<\/a>
\n250\u00a0(14.1K;\u00a05)<\/a>
\n250s\u00a0(14.9K;\u00a032)<\/a><\/td>\n		1000\u00a0(1.30K;\u00a05)<\/a>
\n250\u00a0(1.33K;\u00a04)<\/a><\/td>\n		1000\u00a0(8.03K;\u00a01)<\/a>
\n250\u00a0(8.05K;\u00a01)<\/a><\/td>\n		1000\u00a0(20.9K;\u00a022)<\/a>
\n250\u00a0(22.5K;\u00a016)<\/a><\/td>\n		1000\u00a0(8.60K;\u00a03)<\/a>
\n250\u00a0(9.25K;\u00a011)<\/a><\/td>\n		1000\u00a0(11.8K;\u00a010)<\/a>
\n250 (12.9K;\u00a06)<\/a><\/td>\n		1000\u00a0(3.33K;\u00a01)<\/a>
\n250\u00a0(3.52K;\u00a02)<\/a><\/td>\n		1000\u00a0(0.92K;\u00a01)<\/a>
\n250\u00a0(0.74K;\u00a03)<\/a><\/td>\n		N7538IRS1<\/th>\n<\/tr>\n
<\/th>\n<\/tr>\n
Species<\/th>\nC18<\/sup>O<\/th>\n13<\/sup>CO<\/th>\nCH3<\/sub>OH<\/th>\nCS<\/th>\nCO<\/th>\nHCN<\/th>\nHCO+<\/sup><\/th>\nH2<\/sub>CO<\/th>\nN2<\/sub>H+<\/sup><\/th>\n<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

*For the current values used in our ORAC_DR software please visit our: Starlink index.standard page<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The figures below show the results of CO(3-2) observations of the standard sources CRL2688, CRL618, and IRC+10216, which most often are used to check the performance of the JCMT. Left is the integrated intensity and right the peak antenna temperature (only for 1000 MHz because the ORAC-DR output file log.standard\u2026 Continue reading<\/a><\/p>\n","protected":false},"author":10,"featured_media":0,"parent":170,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/534"}],"collection":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/comments?post=534"}],"version-history":[{"count":69,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/534\/revisions"}],"predecessor-version":[{"id":12400,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/534\/revisions\/12400"}],"up":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/170"}],"wp:attachment":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/media?parent=534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}