Sequencer Site SIRTF IOC Activity c. 2002

CAID: MIPS-241 Title: 70 um spectral leak check
 
System: MIPS Principal: mrieke Deputy: krs
Objective:   
To check the MIPS filters for short-wavelength
leaks.
 
Description: 
Place a bright star in the FOV of the 70um 
array.
Scan the mirror in small steps (1/4 pixel) for a
total of 80 steps to obtain the 1D PSF. Repeat 
at
different spacecraft offset for redundancy and
repeat using a much colder object.
 
Day:   45.8763888888934 Suggested Order:   H400
 
Must be preceded by these activities (list by CAID):   MIPS-322, MIPS-121
 
Place in Schedule:   After dust cover off
 
Priority:   Critical

Conditions

Maximum telescope temperature: 12 K
 
Minimum telescope temperature: 5.5 K
 
Should activity be repeated if focus changes?   Yes     Repeat if focus changes by 0 mm
 
Maximum absolute pointing uncertainty: 10 arcsec (1 sigma radial)
 
Maximum precision offset uncertainty: 10 arcsec  (1 sigma radial)
 
Observatory configuration: pointing at a star
 
Go/No Go criteria: Scan mirror and array readout must be functional.

Resources

Duration:   50 minutes
 
Real time downlink:   No   

Data Volume (uncompressed): 3 Mbits
 
List Blocks, AORs, SERs, IERs, or unique sequences required (uplink): Specialized IET
 
List Analysis tools required (downlink):   Data analysis of the PSF power spectrum to detive the high frequency components

Outcome

Estimate of data turn around:   48 hours
 
Description: Scans of 1-D PSF at 70um taken with hot and cold sources
 
Can proceed in parallel with other activity: No
 
Must outcome be confirmed before next activity: No
 
Method of Confirmation:   Data analysis
 
 
Success criteria: obtained well-exposed data
 
Contingency plan:  Repeat with different star, change integration time
 
 

Comments

 
References:  
 
Additional Comments:
Must be careful in choosing stars as saturation must be avoided and extended sources must be avoided
 
This activity last updated: 7/2/2002 3:36:30 PM