More on several things ...
Today the three tasks kept going.1- Pre-imaging. ESO pipeline is available, now just have to learn how to use it ... also talked to some people at ESO about proper way to do the reduction for the pre-imaging. Some good suggestions, specially from Marina Rejkuba, but one last person will be asked tomorrow, Piero Rosati who has experience in the GOODS spectroscopy.
The problem is. FIMS creates the mask and is transforms angular units to pixel and pixel to millimeters on the FORS2 focal plane, so that the mask can be cut. They strongly advise that no modifications should be done to the image properties or headers, since this can alter the geometrical transformations and corrections for the focal plane positions.
So images, debiased and flatfielded (as they come) should be simply combined with IMCOMBINE using OFFSET = wcs ... the problem is that this procedure creates an image that is larger than the original by the shifted pixels ... Is it still FIMS acceptable??? No one knows, because no one takes chances!! Will I take chances?? NO WAY!!!
I'll ask Piero how he's done that before, otherwise I'll just do it "the hard way". I'll talk about it tomorrow, after I have an answer!
2- Matching catalogues of our clusters (literature X my catalogue) BY EYE, since the shifts are not linear, one is like a rotation and there are some false matches. The other is sort of random, so matches are a bit doubtful, on the other hand, this is the catalogue that has more information ... like is hard!
3- Code for the KG project advancing a lot! Technicalities and syntax seems to be under control ... Now the fun part! MATH!
Labels: eso_preimaging, hcg_ucd, hi-z morph, kg
posted by Cris Da Rocha @ 11:52 PM
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