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About astrobena

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  1. Ahh ok, ive used the tabs and at first even that didnt work but that was because i put the images from the imaging session with all 4 frames into the Main group not one of the other ones... All sorted now, cheers!! I use the canon eos 400D and ill probably settle on 50 sec with ISO 200 from now on, that seems to be best (i know thats again different from all the others but the 50 sec ISO 100 was slightly therefor the ISO bumb up) Thanks again!
  2. Hey everyone, As the titel mentions, after stacking alot of photos from M31 taken over multiple nights at slightly different ISO and Exposure values i have noticed a specific noise pattern of black pixels only, which becomes much clearer after some slight edits in PS but can already be seen in the stacked image (I used DSS)... I've attached the image below and oversharpend so it can be seen clearly. Any ideas? Many thanks!
  3. Hey everyone, Over the past few days i've been gathering data on M31 due to the battery not lasting long and andomeda dissapearing behind a tree, therefore the mulitple imaging sessions. So far i've been out and me being me, only took dark, bias and light frames for the first 2 sessions but for the last one i also included flats... (The lights all have very slightly different settings cause i have been experimenting slightly... that being 45sec @ ISO 400, 45sec @ ISO 200 and 50sec @ ISO 100) Now DSS assinged all the correct bias and dark frames to the corresponding light frames but becaus
  4. Thanks alot, thats very helpful. If I take more pictures do they have to have the same exposure length. If not, and i take pictures with an exp. of 1min (15sec longer than the current ones) i would need new dark images? Im assuming I need new flats anyway due to dust stops moving around when transporting and for the bias I can just use the same ones right? (although making more doesnt take long at all).
  5. Hey everyone, I was out recently in what felt like the first clear sky in years and got ~109 min of data on M31, minus 76 frames due to a 12mph wind, which left me with 69 min of data (each shot is 45 sec with ISO 200 tracked with skywatcher star adventurer). As mentioned in the title I captured all these images in a bortal 8 location, used an unmodified canon eos 400d and the skywatcher 75ed as the scope (with a flattener). I've attached my edit (warning: it is not great at all + slightly overedited to see what details are even there), and to be my surprise it looked very similar to an i
  6. First of all, Thank you! I used the EOS 400d (which is now over 15 years old, and doesnt even have a live view) with the skywatcher evostar 72ed. When you say combine shorter exposures you mean stack the two different exposures seperatly and then merge them with photoshop right?
  7. Heres my first ever shot of the Orion Nebula in a Bortal 8 sky (as well as my first nebula). I stacked 52 light frames with Deep Sky Stacker (with dark, bias and flat frames) and then edited the stacked image with photoshop. The Core looks kind of blown out, so I'll need some shorter exposures to combine with this version. I've also got a question linked to this: As i'm in a Bortal 8 location (on the edge of London, UK) i feel like i'm kind of limited by the exposure length befor the image just looks completly white/redisch from light pollution. For this photo i used 45 second Exposures but
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