272C5008A.html |
RA Range: 8.5-9
Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance):
0.8 2CLR 1.5 1.0 30.
| Pre-imaging run? |
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Chilean run? |
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Special calibrations? |
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| Time critical? |
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ToO? |
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Carry-over run? |
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DDT program on embedded YSOs from SIRTF project: JHK Aladdin imaging and M-MR spectroscopy of IRAS 08621-5100, as well as M-MR and L-LR spectroscopy of HH46-47. The JHK imaging field contains bright sources (K=9.0); a waiver has been granted. This bright source itself will saturate, the users are interested in high sensitivity of nearby sources. PLEASE SCHEDULE THE JHK IMAGING AT THE END OF THE NIGHT! For spectroscopy, own telluric standards are provided. There are special constraints on the spectroscopy program, namely airmass < 1.3, humidity < 30%, airmass difference between object and telluric standard < 0.1. The latter is considered most important. The users are aware that special constraints are on a best-effort basis. !Given the coordinates of science objects and standard stars, a better airmass difference can currently be reached if the standard star is observed first, followed by the science target, and not vice versa. An optimum time is to start with the standard star at HA~-2:30h ! Nov. or early Dec. is preferred because of early SIRTF press releases.
README of this run: