| CAID: MIPS-140 | Title: SED mode slit profile | |
| System: MIPS | Principal: psmith | Deputy: |
| Objective: | To determine in detail the position and throughput profile of the SED slit. |
| Description: | Place a bright source in the SED slit. Use the CSMM to move the source 1.5 pixels away, and then step across the slit in steps of 0.25 pixels, taking 12 steps. Each of the 12 DCEs is followed by a CSMM chop to a sky position ~2' away. The result is a 12 position scan across the SED slit with 12 accompanying DCEs at the sky positions. Repeat the process for 6 positions along the slit to get detailed information about slit orientation and throughtput along the slit. The steps along the slit should be approximately +96, +64, +32, -32, -64, and -96 arcsec from the midpoint of the slit. The bright target should be a photometric calibrator. |
| Day: 61.5784722222306 | Suggested Order: O500 | ||
| Must be preceded by these activities (list by CAID): MIPS-139 | |||
| Place in Schedule: After dust cover off After FPS SED activity is complete. T < 12K | |||
| Priority: Necessary | |||
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: | 3 arcsec (1 sigma radial) | ||
| Maximum precision offset uncertainty: | 0.5 arcsec (1 sigma radial) | ||
| Observatory configuration: | standard | ||
| Go/No Go criteria: | CSMM operating, SED slit location known. | ||
Duration: 40 minutes
| | Real time downlink:
No | | |||
| Data Volume (uncompressed): 57 Mbits | |||
| List Blocks, AORs, SERs, IERs, or unique sequences required (uplink): IER: MIPS_SED_SLIT_PROFILE | |||
| List Analysis tools required (downlink): pipeline slope image output + analysis tool from IT. | |||
| Estimate of data turn around: 5 hours | |||
| Description: 6 1D maps of SED slit throughput and position of slit on the 70um array. | |||
| Can proceed in parallel with other activity: No | |||
| Must outcome be confirmed before next activity: No | |||
| Method of Confirmation: Data analysis | |||
| Success criteria: Source begins to one side of slit and winds up on the other side as a result of the 12 offsets, and does so for all 6 along-slit positions. | |||
| Contingency plan: Repeat, increasing range of scanning mirror and/or integration time. | |||
Comments | |||
| References: | |||
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Additional Comments:
Depends on completion of FPS activity to locate the slit. IER exists in rough form - JAS. | |||
| This activity last updated: 10/7/2002 11:54:06 AM | |||