All Ophiuchus in Sub-millimeter continuum (850 microns)

Version 2.0
All Ophiuchus in Sub-millimeter continuum (850 microns)
COMPLETE team, 2011, "All Ophiuchus in Sub-millimeter continuum (850 microns)", https://doi.org/10.7910/DVN/HB27FD, Harvard Dataverse, V2
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Description

Update:
It has come to our attention that the original COMPLETE 6" pixel SCUBA maps had a calibration error, resulting in the flux per beam being undervalued by a factor of 2. This error has been corrected as of July 9th 2007 and new versions (v3) of the maps are now available through the following pages.

A new version 2 was posted April 11, 2006. This version includes a small fix to the headers which results in a 1/2 - 1 pixel shift in the map. This datafile is called O phA_850umJCMT_F_v2.fits, and has been superseded by version 3 (above).

Description:
This file includes our own observations taken with SCUBA between March 2003 and January 2005 in fast-scanning mode, as well as archival data. Flux units are in Jy per 15 arcsecond beam.

This version 3 (posted July 9, 2007) includes a calibration fix, as the old maps had the flux per beam being undervalued by a factor of 2. Also incorporates the fix in version 2. This version should be used rather than older versions.

Version 2 (posted April 11, 20 06) includes a small fix to the headers which results in a 1/2 - 1 pixel shift in the map.

Telescope:
JCMT

Status:
Preliminary

Sampling:
Sensitivity: 40 mJy per beam
Waveband: 850 microns
Resolution: 15 arcseconds (features larger than 1.5 arcminues have been removed)

Areal Coverage:
5.5 square degrees

Map Center (Galactic):
NA
NA

Map Center (J2000):
RA = 16:28:34
Dec = -23:54 :54

Comments on Processing:
As previously - flatfield. despike, weather, chop deconvolution (see Johnstone et al. 2000, ApJS, 131, 505)

Additionally:
- data gaussian smoothed with sigma = 1pixel (smoothing some of noise)
- large scale structure removed through creating large scale smoothed map which is subtracted from the data. This map is made by replacing all large (positive and negative) pixels by 0 (large was taken to be +/- 0.25Jy/beam) (Thi s prevents some of the characteristic 'bowls' seen around maps that have only been smoothed and not zeroed for flattening.), followed by smoothing this map on large scales (15 pixels = 1.5arcmin). This is then removed from the original data.

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OphA_850umJCMT_F.jpg
OphA_850umJCMT_F.jpg
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Published Sep 26, 2011
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MD5: 1086da5a3ee5d6d63868a1850e53c833
SCUBA Extinction map of Ophiuchus
Image File
Preview "OphA_850umJCMT_F.jpg"
OphA_850umJCMT_F_v3.fits
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Published Sep 26, 2011
260 Downloads
MD5: 5b21085c810e825512423bd2e522c442
SCUBA 850 micron emission FITS cube, version 3
FITS File
OphA_dextnJCMT_F.fits
Plain Text - 14.7 MB
Published Sep 26, 2011
164 Downloads
MD5: ef7d362d578e5573f960f6ddf49630af
SCUBA Extinction map in FITS cube (same scale and region)
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