Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

taking flats

  • Please log in to reply
1 reply to this topic

#1 bujin9

bujin9

    Sputnik

  • -----
  • topic starter
  • Posts: 30
  • Joined: 02 Nov 2019

Posted 01 June 2020 - 12:42 PM

Hi...

when taking flats with my C11, should I keep my Astrozap dew shield on when taking my flats?....or can I take it off. I'm using an Astrozap at the front end for dew management during imaging. I only ask cause wrapping a white cloth on it may create a bit of light leakage or where it wraps onto the OTA may have light leakage.

thanks,

Joe



#2 gatsbyiv

gatsbyiv

    Viking 1

  • *****
  • Posts: 815
  • Joined: 29 Mar 2009
  • Loc: Doylestown, PA

Posted 01 June 2020 - 01:09 PM

I can't speak to your scope exactly, but I've recently found that with my AT8RC, putting the t-shirt directly on the end of the tube has led to flat fielding issues that were solved when I switched to sky flats.  I think it was causing internal reflections somewhere.  The extra distance provided by the dew shield should help, but compare to sky flats to be sure.




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics