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  • 04:52, 9 August 2019 ‎Telescopes (hist) ‎[1,005 bytes] ‎Ana (Talk | contribs) (Created page with '== Basic geometry == Plate scale of a telescope is 1 radian in the sky (measured in arcsec) "seen" in the focal plane of the telescope at the focal length (measured in millimete…')
  • 10:24, 11 June 2018 ‎Sigma image (hist) ‎[3,081 bytes] ‎Ana (Talk | contribs) (Created page with '== SDSS sigma image == http://data.sdss3.org/datamodel/files/BOSS_PHOTOOBJ/frames/RERUN/RUN/CAMCOL/frame.html There is gain + rdnoise depending on camcol (for each filter) in th…')
  • 10:07, 31 May 2018 ‎Ccd mosaic (hist) ‎[6,834 bytes] ‎Ana (Talk | contribs) (Created page with '== Montage == Download at: http://montage.ipac.caltech.edu/docs/download.html Simple script called mosaic.sh: #!/bin/bash mkdir rawdirFILTER projdirFILTER diffdirFI…')
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