| CAID: MIPS-298 | Title: SED Response Verification | |
| System: MIPS | Principal: psmith | Deputy: |
| Objective: | To verify if the response is tracked adequately with undispersed light as opposed to light that has traversed the SED-mode optical path. |
| Description: | The response of the 70um array is measured by using flat field stimulator and compared to the response measured using undispersed light from the flood stimulator. This will test if significant wavelength-dependent differences are seen. The test will consist of a number (10) of alternating flood stim and flat field stim flashes. Since CSMM position for the flat field stim allows undispersed sky background on to the array, the telescope should be pointed toward a region of low backgroud. The observation should start with a flood (undispersed) stim followed by a flat field (dispersed) stim. We should repeat these exposures 9 time and then finish the entire sequence with a flood stim. The flat field stim should be set to its brightest to improve statistics without saturating. Depending on how brightness of the dispersed flat field stim, we may need several 3 or 10s DCEs to better the statistics. |
| Day: 81.027777777781 | Suggested Order: V100 | ||
| Must be preceded by these activities (list by CAID): | |||
| Place in Schedule: Any time after the 70um array is considered to be ready for the use of standard AOTs. | |||
| Priority: Desired | |||
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: | 10 arcsec (1 sigma radial) | ||
| Maximum precision offset uncertainty: | 0 arcsec (1 sigma radial) | ||
| Observatory configuration: | standard | ||
| Go/No Go criteria: | CE nominal | ||
Duration: 10 minutes
| | Real time downlink:
No | | |||
| Data Volume (uncompressed): 10 Mbits | |||
| List Blocks, AORs, SERs, IERs, or unique sequences required (uplink): Special IER that alternates between flood and flat field stims. | |||
| List Analysis tools required (downlink): IRAF or IDL | |||
| Estimate of data turn around: 48 hours | |||
| Description: Flood and flat field stims will both be median filtered and examined for differences in the pixel-to-pixel response. | |||
| Can proceed in parallel with other activity: No | |||
| Must outcome be confirmed before next activity: No | |||
| Method of Confirmation: Data analysis | |||
| Success criteria: S/N high enough for the flat field stim exposures in order to make a meaningful pixel-to-pixel comparison to the flood stim exposures. | |||
| Contingency plan: | |||
Comments | |||
| References: | |||
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Additional Comments:
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| This activity last updated: 6/15/2002 2:45:19 PM | |||