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shaunster

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Everything posted by shaunster

  1. shaunster

    SCAG TH

    From the album: Astro imaging

  2. Really good for 1 sub, shows real promise. Hardly any background skyglow in that either!
  3. shaunster

    M31 in L

    From the album: Astro imaging

  4. shaunster

    M51 1200

    Looks like your cliiping the black point or very near to it and probably losing some detail because of it. The very dark black backgrounds looks quite unnatural. Dark halos around stars indicate over sharpening of the image.
  5. Great shot, sets the scene nicely!
  6. Theres a less contrasty version here http://stargazerslounge.com/imaging-deep-sky/149895-nan-pelican-mosaic.html Cant decide which I prefer
  7. shaunster

    NGC7000 Ha/OIII

    Very kind words david :)
  8. shaunster

    NGC7000 Ha/OIII

    Thanks Russ, I love how this came out as well! For some reason uploading the image to SGL makes its colour change a bit, this looks a little orange. Look here http://stargazerslounge.com/imaging-deep-sky/148572-ngc-7000-ha-oiii.html and its how I meant it :)
  9. shaunster

    NGC7000 Ha/OIII

    Now with O3 7x1200s Ha 8x1200s OIII
  10. shaunster

    NGC7000 ha

    Thanks all :) Heres the details since some are interested Scope = Zenithstar 70 + skywatcher flattener Camera = Atik 383l+ 1.25" baader 7nm Ha filter Guided with QHY5 + ST80 all on a HEQ5 7x20min subs
  11. shaunster

    Deneb

    Looks very noisy yes, but this is why you need loads of subs to overcome this. Also with the DSLR being uncooled and this the middle of summer your images will be additionally noisy
  12. shaunster

    NGC7000 ha

    Yes guided :) Baader 7nm Ha filter + atik 383l+
  13. shaunster

    Deneb

    The nebulosity comes with time, 2 minute exposures on a DSLR and I presume its unmodded wont capture much if any, if you shot at a particulary bright target such as orion M42 then you will see the nebulosity apear, but generally to capture the fainter type backgroun nebulosity ( like that around deneb) then long exposures are needed. If polar allignment is off the image will appear to rotate around its centre, the stars in the centre stay round and the outer ones rotate around it, a bit like star trails There is a lot of nebulosity around the star Sadr which is near deneb, if you shot for this and took longer and more exposures then you should see something and the more exposures you get will help smooth the image out. Aim for at least 20 subs at the longest exposure you can get without trailing and then stack and process and see what you get. The more subs you get the easier it is to create a better final image.
  14. shaunster

    NGC7000 ha

    This was 7 x 1200s
  15. shaunster

    Deneb

    This is the best one you have posted martyn, clean field with minimal gradients. Looking at this it seems you are suffering from some field rotation of the stars, I presume this was unguided but anyway this points to polar allignment being off
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