QHY8L Setting Gain and Offset

[Skywatcher 200]

Hi all,
  I'm after some advice regarding setting the Gain and Offset for my QHY8L. Having done some searching on this forum and the QHY website, i just  
have a couple of questions.

Set up - Evostar 80ED DS-Pro - 0.85 Focal Reducer/Astronomik 2" CLS Filter - Spacer - QHY8L CCD

1) Should these settings be done with the CCD,  ON or Off the scope ?
   As the optics/filter have an effect on the readings.

2) Should i also do these at the Temp i plan to operate the CCD at  ie, -20C below ambient

Thanks

Andy

[msh1]

hi there i used to own a qhy8l and you can set it up off the scope i dont think it needs to be cooled down although i might be mistaken been a few years lol

[Skywatcher 200]

Thanks for the reply msh1,

The manual i have does not make any reference to cooling to an operating temp prior to Gain/Offset setting, but i seem to remember reading a post on one of the many forums that I've visited, stating that  it gives a better result !  I'll have to play and see what works best.

Thanks

Andy

[sloz1664]

Hi Andy,

 

I set up my QHY8 Pro using the attached gain & offset info. you do not require any additional equipment except for a decent cover to block out light. I used a T2 lens cap & aluminum foil to ensure I had no light leaks.

 

Steve

gain and offset.pdf

[Skywatcher 200]

Hi Steve,

i have a t2 cap on route, and the link is very  helpful, i shall have a play during the week

Thanks

Andy