This target is not used in this proposal.
I am getting the usual warnings but those should be ok
-1070814367
Your proposal could not be saved.
Submission aborted.
----- Attempting Submission 1 (Tue Aug 11 19:05:45 GMT 2020) -----
----- Attempting Submission 4 (Wed Jun 30 19:18:58 GMT 2021) -----
I don't think the warning are a problem
ACS External CTE Monitor
This program will obtain a direct calibration of photometric losses due to imperfect CTE by imaging stars in 47 Tuc
For each pointing we will obtain 2 CR-SPLITs to allow cosmic ray rejection and provide a set of clean stars for the analysis of CTE effects on photometry. More specifically, since the CTE also depends on the background level, we will obtain 5 different background levels, using the F502N and F606W filters and different exposure times, from 30s to 400s per exposure. In this way, we will obtain background levels ranging from ~0 to ~50 e-/pixel. Thus the total number of exposures is 5 (bkg levels) x2 (CR-SPLIT) x 3 (positions on the sky) = 30. Since it is crucial to obtain an almost constant sky level, we will request low sky. Four to five images can be done each orbit so the total orbit request is 8 orbit. One field located closer to the nucleus of the cluster (~2' off-center) will also be imaged with the same technique. A series of short (30s) exposures with be taken with F502N in order to obtain a larger number of stars in the field of view. This will allow us to better characterize the effects of CTE for extremely low background
values.
0
false
false
RESTRICTED
STELLAR CLUSTER
GLOBULAR CLUSTER
Field 6' W of cluster centre.
J2000
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
J2000
EXT-CLUSTER
GLOBULAR CLUSTER
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
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