S-COSMOS MIPS-Ge GO2 Delivery   
25Jan2007
D.T.Frayer + S-COSMOS team 

I. Basic Information

Telescope:             Spitzer
CampaignId:            818 (MIPS006300) [COLD]
ReqModeName:           MipsScan
PI:                    David B. Sanders
Program Title:         SCOSMOS
Program ID:            20070
MIPS-Ge Bands:         70 and 160um
SSC Software Version:  S13.2.0
See SSC website for S13.2 data issues and Calibration.

II. Products

mips_70_g02_cat.tbl        70 um catalog
mips_70_g02_sci_10.fits    70 um image
mips_70_g02_cov_10.fits    70 um coverage map
mips_70_g02_unc_10.fits    70 um uncertainty map

mips_160_g02_cat.tbl       160 um catalog
mips_160_g02_sci_10.fits   160 um image
mips_160_g02_cov_10.fits   160 um coverage map
mips_160_g02_unc_10.fits   160 um uncertainty map

III. Calibration:

Adopted S13 calibration conversion from instrumental units to MJy/sr:
70um conversion_factor = 702 MJy/sr per MIPS70unit (7% uncertainty) and
160um conversion_factor = 44.7 MJy/sr per MIPS160unit (12% uncertainty).
MIPS calibration based on stellar SEDs and no color corrections have
been applied.

IV. Data Issues/Features/Comments:

(1) Data are not color corrected (MIPS calibrated based on stellar
SEDs).  Check the SSC web pages for the latest color corrections and
calibration.

(2) The positions of the 160um data are systematically offset by about
4-5" with respect to the 70um and 24um positions (the estimated
focal-plane position of the MIPS-160 array is slightly off for S13
versions and earlier; this was fixed for S14).

(3) Absolute positions at 24um and 70um may be off by 1-1.5 arcsec
(pointing uncertaintly for Spitzer) -- astrometric solution has not
been tied to ACS or IRAC yet.

(4) The PostBCD mosaic products are quick-look products made from the
online FBCDs using MOPEX.  The co-addition was not optimized for the
different integration times (both medium+slow scan data combined
directly).  Bright sources have not been masked during the filtering
process so flux densities for the brightest sources may be
underestimated (e.g., in cases where negative side-lobes are seen
along the scan direction near the source).  Improved products can be
made with optimized processing of the RAW data with the GeRT and
additional techniques (e.g., Frayer et al., 2006a, AJ, 131, 250;
Frayer et al. 2006b, ApJ, 647, L9).  We plan to carry out optimized
S-COSMOS-Ge processing of all data after the GO3 Epoch-2 observations
are finished in May 2007.

(5) APEX source extraction lists made based on "PRF" fluxes with
S/N>7.  The S/N>7 threshold has been shown previously to yield fairly
reliable (non-spurious) source lists (e.g., xFLS, Frayer et
al. 2006a).  However, the photometric results have not been validated
for these lists.  In particular, careful background subtraction,
deblending, and noise optimization has not yet been done.  The main
purpose of these lists is to identify the location of bright sources
for future S-COSMOS Ge processing.  These are quick-look source lists;
use at your own risk.

V. AOR Observation Listing:

REQKEY    Request Title   Observation Start
r15537664 MIPS-D1d-Cosmos 2006-01-06 14:28:14.172
r15537920 MIPS-M1-Cosmos  2006-01-09 03:40:06.167
r15538432 MIPS-D1e-Cosmos 2006-01-06 17:22:20.052
r15539456 MIPS-M2-Cosmos  2006-01-09 00:51:00.177
r15540480 MIPS-D2a-Cosmos 2006-01-07 00:36:30.799
r15542016 MIPS-M3-Cosmos  2006-01-08 22:01:58.378
r15544064 MIPS-D3v-Cosmos 2006-01-08 08:16:55.766
r15545088 MIPS-D2b-Cosmos 2006-01-07 03:33:30.745
r15545600 MIPS-M4-Cosmos  2006-01-08 13:02:56.187
r15546624 MIPS-D2c-Cosmos 2006-01-07 12:26:02.863
r15546880 MIPS-D3w-Cosmos 2006-01-07 15:19:56.161
r15547136 MIPS-M5-Cosmos  2006-01-08 03:47:32.011
r15548416 MIPS-D2d-Cosmos 2006-01-07 06:27:38.726
r15548672 MIPS-D3x-Cosmos 2006-01-08 10:08:35.623
r15548928 MIPS-M6-Cosmos  2006-01-08 00:58:28.118
r15549184 MIPS-D3y-Cosmos 2006-01-08 15:51:57.986
r15549440 MIPS-D2e-Cosmos 2006-01-07 22:04:03.363
r15550720 MIPS-D3z-Cosmos 2006-01-06 20:16:25.936
r15552256 MIPS-D1a-Cosmos 2006-01-06 04:15:29.132
r15553536 MIPS-D1b-Cosmos 2006-01-06 07:09:35.008
r15554048 MIPS-D1c-Cosmos 2006-01-06 11:31:22.621

Notes on Title Names:
"MIPS-D"-->Deep field  10.49sec DCEs taken in slow scan
"MIPS-M"-->Main field   4.19sec DCEs taken in medium scan

VI. Missing Data check:
(%)==>missing data packet(s), no "%"==> missing header packet(s)
dfrayer% grep "mipl.fits" r*/Q* >> READme
MIPS.2.0015538432.0001.0076.01.mipl.fits (0%)
MIPS.3.0015538432.0001.0076.01.mipl.fits (1%)
MIPS.1.0015545600.0007.0113.01.mipl.fits (3%)
MIPS.1.0015548672.0006.0094.01.mipl.fits (3%)
MIPS.2.0015548672.0002.0076.01.mipl.fits (1%)

Frayer 25Jan2007