Flintstone Stargazing

September 25, 2008

M31-Andromeda Galaxy on 9/24/08

Filed under: astronomy, Astrophotography, Messier Objects, Observation Journal — Tags: , , — Ed @ 2:01 am

This is the first shot of Andromeda I’ve gotten from the D50 with my 8″ scope. And I didn’t realize how big the thing was. I’m going to have to go back and get more frames to get the whole thing in the shot! What a difference autoguiding makes, allowing me to take shots of 5-6 minutes. Well, it’s really late, so I’m headed to bed now…



  1. That’s quite gorgeous. So you’ve been exposing your D50 at ASA 800 and cropping this image. Are you doing that because of amp glow? I also have a D50 and after exposing for one minute or more I’m having problems with amp glow.

    Do you see a significant difference in amp glow between ASA 1600 and ASA 800? Or is that to control noise in general?

    Thanks for sharing and keep shooting.

    Comment by PierreS — September 25, 2008 @ 11:36 pm

  2. Hey Ed… that’s a very nice picture of M31. It’s even possible to discern some of it’s greatest globular clusters. Very nice indeed!!

    Comment by Ricardo — September 26, 2008 @ 10:47 am

  3. Thanks – I haven’t really been cropping much, if at all. The amp glow, which is pretty obvious in the raw images is generally taken care of by the darks. I’m stacking these in DeepSkyStacker and using flats, darks and bias frames to adjust the resulting images. I’m actually hoping to build a light box for taking flats sometime soon which should improve my images even more.

    In terms of difference in amp glow, the reason I have started using ISO800 is because it seems like it’s at a sweet spot with not nearly as much noise as ISO1600 and it captures signal faster than ISO400 so it’s not too hot, not too cold.

    Comment by Ed — September 26, 2008 @ 12:15 pm

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