Nebula Photos Sunday Chat #4 Recording
Added 2021-07-26 21:18:50 +0000 UTCInformal demo of: http://cdsportal.u-strasbg.fr/
Followed by Q&A and discussion on various astrophotography topics including: forest fire smoke, light pollution, calibration frames, ISO, and many more.
Comments
With the camera in manual White Balance, should the flats be taken with the same K or back in Auto? Does it matter? I've been leaving it the same, which of course leaves for rather blue flats.
Robert Bertrand
2021-08-01 16:24:57 +0000 UTCI often use cleardarksky.com, for Canada and US. Provides a searchable map with darkness pins, that when expanded provide a forecast with visibility ratings. That being said, I really like the simplicity of Good to Star Gaze, great tip thanks. I live just north of Kingston, Bortle 4, but driving an hour north brings me into North Frontenac, which is Bortle 2. You can really see the transition of visibility as you drive along.
Robert Bertrand
2021-08-01 16:19:23 +0000 UTCjust watched your sunday chat, sorry i wasn't there but i never found the link to join the conversation. maybe next time. nice chat though, some good takeaways
Joseph Beebe
2021-07-27 04:56:05 +0000 UTCGood question, yes I do recommend matching ISO. There is fixed pattern noise in the flats. It's most likely to correctly divide out of the lights with a matched ISO value.
Nico Carver
2021-07-26 23:58:42 +0000 UTCOne of the topics discussed in your chat was calibration frames, including flats. Is there a need to take the flats at the same ISO as the lights? Or do we just match the focal length & f/ratio?
Fred Oswald, fredoswald@gmail.com
2021-07-26 23:07:41 +0000 UTC
