Quote:
Originally Posted by SimmoW
Thanks for posting the ADU info Ray, much appreciated! I gotta look up how to see such stats via Pixinsight.
I assume this technique can be applied using NB filters too? Just longer times..
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select a small preview without hot pixels or stars (use STF to view the image - don't stretch it). Use Statistics with the selected preview and the data type set to 16 bit. If you have chosen a good region, the mean and median should be fairly similar - use mean. (by the way, take no notice of the actual values in the attached example - this was 4 second sub)
the technique can be applied to NB, but as you say, exposures will be a lot longer.