Description:
Our data was taken between August and October 2003 in fast-scanning mode and is combined with 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, 2006) includes a small fix to the headers which results in a 1/2 - 1 pixel shift in the map. 


Contact Person: 
Doug Johnstone, Herzberg Institute of Astrophysics

Telescope:
JCMT

Status:
Complete

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

Areal Coverage:
3.8 square degrees

Map Center (Galactic):
NA 
NA

Map Center (J2000):
RA = 03:36:37 
Dec = 31:32:19 

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) (This 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.

Publications:
None yet