Wednesday, February 18, 2009

Failed Rosette 2009-02-16




CGE with Meade LXD55.
3minute subs x 34
no dew / light shield till past half way of the observing session.
no light pollution filter
no guiding

1st image is a raw stack with no stretch
2nd image is flatted (but why the poor 'gradient'?)
3rd image is NOT flatted, but had some gradient removed in Iris
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5 comments:

  1. Mike PhillipsFebruary 18, 2009 at 7:38 PM

    No flats and no stretching

    ReplyDelete
  2. Mike PhillipsFebruary 18, 2009 at 7:38 PM

    BAD, BAD FLATS!

    ReplyDelete
  3. Mike PhillipsFebruary 18, 2009 at 7:39 PM

    No flats and Iris' gradient removal

    ReplyDelete
  4. Mike PhillipsFebruary 18, 2009 at 7:57 PM

    single 3min raw, the file name is WRONG, it's not M74, it IS the Rosette Nebula

    ReplyDelete
  5. Mike PhillipsApril 23, 2009 at 12:37 PM

    This one shows vertical banding, not quite sure why, but I did have some subs rotated 180* because the CGE mount did a meridian flip

    ReplyDelete

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