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robindurant

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About robindurant

  • Rank
    Sub Dwarf

Contact Methods

  • Website URL
    http://www.robin-durant.com

Profile Information

  • Gender
    Male
  • Interests
    Astronomy
  • Location
    Sussex
  1. Any ideas what these black speck are, I used my WO z71 + ZWO Asi 2m iso 800 Not proceeded fully to show marks
  2. This is the image. over exposed to show problem
  3. I have acquired a Canon 5D MK 2 which vignettes badly when attached to my Telescopes, WO Z71 & SW 5” Mak I have tried an adjustable field flattener to no effect , I processed 20 subs last night and same darks, the result was rubbish
  4. Hi single shots even at 30 secs are OK and Ive checked and cleaned all the optics
  5. The image has not been turned it is as you see
  6. I have attached 2 images from last night using an H-Apha filter due to the Moon being up, however the target was well away from it and should according to the Filter specifacation not effect Ha imaging. I reduced the exposure to 60 seconds as suggested by many and set iso at 3200 ( grainy but a good setting for accenting the problem) 10 and 5 exposures, stacked them with Deepskystacker, part processed on PS . As you will see it has made no difference whatsoever to the rotating marking or smearing effect I have checked the optics in the Scope and the DSLR Could this be a camera sensor fault or dodgy DSS software, although it stacks with no effort. I have tried every settng on "Preference" on DSS inclusing the ones for Ha images, makes no difference Im now at a loss as to what to try next
  7. No Im in a situation where I can only veiw from SE - SW but have produced reasonable images, this is new
  8. Many thanks Steve, I will try that Thanks Olly
  9. Can you dither manually without software, say with your hanhset while exposing , if so how, thanks
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