Campuses:
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imagerteleconnotes20180523 [2018/05/23 16:47] – wenxx181 | imagerteleconnotes20180523 [2018/05/23 17:20] (current) – hanany | ||
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* Temperature Stability and effects on responsivity variations | * Temperature Stability and effects on responsivity variations | ||
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=== Notes === | === Notes === | ||
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* Jacque: Very long time constant, the fluctuation from dilution does not transfer to focal plane; most fluctuations were from cosmic rays | * Jacque: Very long time constant, the fluctuation from dilution does not transfer to focal plane; most fluctuations were from cosmic rays | ||
* Shaul: why was active control still useful if time constant was large? **Check with Brandon (AI)** | * Shaul: why was active control still useful if time constant was large? **Check with Brandon (AI)** | ||
+ | * The plot is from 4-stage, 4k to low T; 5-stage should outperform with 1K | ||
+ | * Shaul: 1K stage would have its own fluctuation | ||
+ | * Peter: ASTRO-H lab tests with full space instruments, | ||
+ | * did not do in-space test due to computation limit on board | ||
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+ | Noise/band Figure | ||
+ | * Jacques: this one is mostly wrong, no need to discuss. A lot things have been fixed. | ||
+ | * Jacques sends a new figure for Shaul to present. Units are consistent between bands and signals. | ||
+ | * Synchrotron not completely clear | ||
+ | * BB dominated by lensing | ||
+ | * Shaul: six dark blue bands are wrong, should be three | ||
+ | * CO lines | ||
+ | * Current units are for broader community, who do not understand uK. | ||
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+ | Shaul will be gone for next 3 weeks until June 18th. After Shaul comes back, report writing mode. | ||