Board Index -Questions LRGB newbie question

This topic contains 4 replies, has 2 voices, and was last updated by Brian September 23 at 1:26 pm.

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  • #2189

    Brian
    @europa

    I’m doing my first image in Mono, do you need to set the gain and offset for each filter? Also, I’ve noticed in red, my histogram is way to the right, either a gain/offset issue, or do I need to set exposure times differently for each filter.

    #2190

    Sean
    Admin/Moderator
    @h2opolo

    I’m going to have to defer to Mike or Zach on that one.  I don’t have the luxury of shooting LRGB in my polluted skies.  What camera are you shooting with?  Sounds like a CMOS camera.  I do remember having 3 stock settings for the ASI1600MM I once owned.  I don’t believe changing the settings between filters was necessary.  There is a guy on CN that has given a lot of info on the subject.  I’ll dig him up for you.  I think a lot of people start with Unity Gain and then tweak it from there.

    Sean

    • This reply was modified 1 year, 1 month ago by Sean.
    #2192

    Brian
    @europa

    Thanks Sean, i’m using the ASI1600MM. I did not change any settings and hope to process my first image today. I have a bad feeling about it, but who knows.

    #2193

    Sean
    Admin/Moderator
    @h2opolo

    You’ll do fine stick with it.  There is a guy on the forum pages at cloudynights.com named John Ricca who has given some very detailed ideas for the settings for that exact camera.  I used an IDAS D1 Pollution Filter screwed on to the flattener for that camera.  It all did okay but my skies glow with petro chemical plants and forced me to Narrowband only at home.  Unity Gain is where I set it to.  Look up Ricca and his comments, maybe you can get some tips

    Check in with Zach Ruder on this site.  He’s good at this too.

    • This reply was modified 1 year, 1 month ago by Sean.
    #2195

    Brian
    @europa

    Great, thanks Sean.

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