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Subframe Selection and selecting a Preview

Farzad Khosrownia
in PixInsight
Hi Adam. Just a comment about selecting a preview to reduce calculation time: should the subs be registered for consistency of the content of the preview or does it not matter?

Thanks

Comments

  • BlockHeadBlockHead
    If you are talking about Subframe selector- if you have plenty of stars and things then perhaps the images do not need to be registered. However... I think registered images will give you more precise (better) answers. Just consider optical aberrations. If the images are not aligned, the aberrations will be different from image to image... which will affect the measured FWHM, Eccentricity, perhaps even SNR or star count. 

    So I am not exactly certain what you are doing... but the above is my best guess.

    -the Blockhead
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