Sequencer Site SIRTF IOC Activity c. 2002

CAID: MIPS-915 Title: 70 um IC - routine, Scan AOR
 
System: MIPS Principal: aalonso Deputy: dfrayer
Objective:  
To obtain IOC acceptable 70 um scan illumination
correction to be used on a regular basis. This
particular flat has a celestial coordinate
appropriate for 70 um. If MIPS-914 is adequate at
70 um as well as 24 um, then this task may not be
needed.

This activity is a companion to the 70 um IC 
ROUTINE Phot AOR. The pair of activities will
allow us to determine the relative efficiency and
quality of flatfields created using scan and
photometry AORs.
 
Description:
A 2 degree long (1 leg) scan map will be obtained
using the fast-scan AOT in a region of the sky
chosen to avoid bright point sources. This will
produce a total of 118 images to be median
combined to produce a 70 um IC. The map will
require about 12.7 minutes of observing time.
 
Day:   48.1583333333401 Suggested Order:  
 
Must be preceded by these activities (list by CAID):   MIPS-329
 
Place in Schedule:   Telescope temperature stable. MIPS temperature stable. CSMM operational.
 
Priority:   Critical


Conditions

Maximum telescope temperature: 12 K
 
Minimum telescope temperature: 5.5 K
 
Should activity be repeated if focus changes?   No     Repeat if focus changes by 0 mm
 
Maximum absolute pointing uncertainty: 0 arcsec (1 sigma radial)
 
Maximum precision offset uncertainty: 0 arcsec  (1 sigma radial)
 
Observatory configuration: standard
 
Go/No Go criteria: CSMM, CE, and stims and detectors must be operational, instrument and telescope temperatures must be stable


Resources

Duration:   13 minutes
 
Real time downlink:   No   

Data Volume (uncompressed): 120.5 Mbits
 
List Blocks, AORs, SERs, IERs, or unique sequences required (uplink): Scan AOR
 
List Analysis tools required (downlink):   standard pipeline

Outcome


Estimate of data turn around:   24 hours
 
Description: A 70um illumination correction for scan AORs.
 
Can proceed in parallel with other activity: No
 
Must outcome be confirmed before next activity: No
 
Method of Confirmation:   data analysis
 
 
Success criteria: Flats/I.C.s display no noticeable source residuals, have good S/N. Flattened/I.C.d FPS and AOT validation data sets have source signal independent of position in image.
 
Contingency plan: 
 
 

Comments

 
References:  
 
Additional Comments:
 
This activity last updated: 11/19/2001 12:16:44 PM