| CAID: MIPS-270 | Title: Total Power Measurement at Ecliptic Pole. | |
| System: MIPS | Principal: mrieke | Deputy: dfrayer, SStolovy |
| Objective: | Evaluate skeleton AOT -- MIPS TPM |
| Description: | Acquire normal TPM observations of a nominally dark region at the ecliptic pole. This observation will test the AOT and determine how dark the inside of the instrument actually is at all three MIPS wavelengths, evaluating the utility of this mode at 160 um. Standard mode TPM AOR repeated until required S/N is achieved. Can be the same as: Verify pipeline -- TPM |
| Day: 81.9500000000044 | Suggested Order: V750 | ||
| Must be preceded by these activities (list by CAID): MIPS-330 | |||
| Place in Schedule: After aperture door open After CTA/instrument cool down and all other 160um instrument testing is complete. For 24um, the backgrd radiance must be less than 1.0E-11 W/cm2/sr (< 30K). For 70um, the backgrd radiance must be less than 1.0E-12 W/cm2/sr (< 12 K). For 160um, the backgrd radiance must be less than 5.4E-13 W/cm2/sr (< 6 K). It may be possible to split this test into parts executed a different times based on telescope temperature, but simultaneous use of all three bands is a better use of time. Location of MIPS apertures must be completed. Can be concurrent with other AOT/instrument tests. | |||
| Priority: Necessary | |||
Conditions | |||
| Maximum telescope temperature: | 6 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: | 5 arcsec (1 sigma radial) | ||
| Maximum precision offset uncertainty: | 5 arcsec (1 sigma radial) | ||
| Observatory configuration: | Pointing at a dark area in the CVZ | ||
| Go/No Go criteria: | 160um channel must be fully functional | ||
Duration: 40 minutes
| | Real time downlink:
No | | |||
| Data Volume (uncompressed): 200 Mbits | |||
| List Blocks, AORs, SERs, IERs, or unique sequences required (uplink): Standard pipeline system and standard data analysis tools required. MIPS skeleton TPM AOT required for uplink. | |||
| List Analysis tools required (downlink): | |||
| Estimate of data turn around: 48 hours | |||
| Description: Fully calibrated MIPS TPM data products in three bands, or whatever is available from skeleton pipeline. | |||
| Can proceed in parallel with other activity: No | |||
| Must outcome be confirmed before next activity: No | |||
| Method of Confirmation: Data analysis | |||
| Success criteria: | |||
| Contingency plan: Revisit pipeline and/or AOT design depending on the nature of failure. | |||
Comments | |||
| References: | |||
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Additional Comments:
Required Conditions: CTA and instrument at nominal operating temperature for the 160 um band (< 6 K). PCS performance: Minimal PCS peformance required. | |||
| This activity last updated: 11/8/2001 2:24:31 PM | |||