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ramirodsl |
02/27/2009 10:02PM (Read 2106 times)
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Status: offline
Registered: 02/27/2009
Posts: 1
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I'm fitting ellipses to images of galaxies using a bad pixel mask (dqf parameter).I know the bad pixels are not taken into account for the geometry fitting.My questions are:1- I want to know if the reported fluxes in the output table include or not the flux from the bad pixels.2- Also, what happens if I set both the inellip and the dqf parameters? I don't understand what the task is doing in this case. I expect it would use the bad pixel mask for estimating photometry only but it seems to be refitting the geometry.Thanks for your timeRamiro
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fitz |
02/27/2009 10:02PM
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Status: offline
Registered: 09/30/2005
Posts: 4040
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For an authoritative answer (I don't use this task) you should check with the STScI help desk (help@stsci.edu) since this is their task. However, a quick scan of the code seems to indicate that the output fluxes only take into account the valid pixels (i.e. not the dqf-flagged ones). The inellip param is supposed to apply the pre-defined ellipses and compute results from those, I'm not sure why it appears to be refitting.-Mike
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