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Author Topic: Flat analysis  (Read 552 times)

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Online chris.bailey

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Re: Flat analysis
« Reply #15 on: 12:43:04, 10 November, 2017 »
John

To my eye and based on the .jpg that is about as good as it gets. Bit of residual gradient but thats not a calibration issue. Running DBE on it sort that out nicely.

To be quite honest I only use flats now if I have an issue. I try and clean the CCD optical window carefully and avoid dust motes. I then do everything else with DBE. That is with Ha though were I struggle to get flats to work well enough, a known issue with narrowbandpass.

Chris
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