| CAID: MIPS-342 | Title: Ultimate Scattered Light Levels #3 | |
| System: MIPS | Principal: mrieke | Deputy: jkeene |
| Objective: | This is the 160um portion of the test. See MIPS-340 for complete description. |
| Description: | Part 1: Diffuse light scattered into MIPS Point at a high background location (Galactic Plane preferably). Perform a thermal anneal on the 160um array. Move the scan mirror to the 160um dark position. Take 30 10-second integrations Part 2: Scattered light from stars adjacent to the field of view. Point at a bright star which would saturate if viewed directly. Take 10-second integrations while stepping the star by 45" along a long side of the 160um array. Take 3 exposures at each step position. Take 10-second integrations while stepping the star by 45" along short side of the 160um array. Take three exposures at each step position. Repeat the above steps on the other two sides of the 160um array. |
| Day: 86.4076388888934 | Suggested Order: W700 | ||
| Must be preceded by these activities (list by CAID): MIPS-950H | |||
| Place in Schedule: Can begin after the aperture door is opened, basic MIPS functionality is checked, and after the scattered backgournd monitor is complete. | |||
| Priority: Necessary | |||
Conditions | |||
| Maximum telescope temperature: | 6.5 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: | 2 arcsec (1 sigma radial) | ||
| Maximum precision offset uncertainty: | 1 arcsec (1 sigma radial) | ||
| Observatory configuration: | Pointing at Galactic plane for Part 1, pointing at a star for Part 2 | ||
| Go/No Go criteria: | Scan mirror and array readouts must be functional. | ||
Duration: 70 minutes
| | Real time downlink:
No | | |||
| Data Volume (uncompressed): 900 Mbits | |||
| List Blocks, AORs, SERs, IERs, or unique sequences required (uplink): | |||
| List Analysis tools required (downlink): | |||
| Estimate of data turn around: 48 hours | |||
| Description: Will understand scattered light levels within MIPS | |||
| Can proceed in parallel with other activity: No | |||
| Must outcome be confirmed before next activity: No | |||
| Method of Confirmation: data analysis | |||
| Success criteria: Obtain unsaturated data. | |||
| Contingency plan: If an unusually high background is observed, an analysis of the MIPS/CTA optical path will be needed. | |||
Comments | |||
| References: | |||
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Additional Comments:
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| This activity last updated: 7/2/2002 4:51:01 PM | |||