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Alien 13

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3,344 Excellent


About Alien 13

  • Rank
    White Dwarf
  • Birthday 24/01/55

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    Leicester UK
  1. Cheat!?

    Cheating for me but so is using anything above a 3 inch frac or a 6 inch newt, I would however embrace all the new tech. Alan
  2. Nice result, I find I revisit images many times and save various versions before I am happy. Alan
  3. In praise of the "Lifesaver" Bolt!

    I still use a few diy lanyards on my mount made from things I find in the "pound shop" and of course the bolt on the dovetail. Alan
  4. Had a quick try with the autosave file just using the sliders in DSS and saving with settings applied, bit aggressive but shows whats in there. Alan
  5. NASA always get the best shots

    The problem with spacecraft it that by the time they launch the tech could easily be 5 years out of date and if you factor in the journey time then its ancient so I would not be surprised if an amature cant do at least as good on some targets.. Alan
  6. I have always wondered this too, love Maks btw. Alan
  7. Trying to compensate for something

    Yikes but I do wonder whats the point of it, you must be nudging it every few seconds with the risk of falling off and instant death, It would be far better on an EQ mount with a camera attached.. Alan
  8. Larger Exit Pupil

    I think thats probably correct which is exactly what you need for military applications if trying to see in near darkness. Alan
  9. Larger Exit Pupil

    I dont know but from experience you can stick your eye almost anywhere and see the image, I have had a few combinations with some scopes of having to hover around to even see a glimpse of light and it would vanish a few mm in either direction. Alan
  10. Larger Exit Pupil

    I did mean 20 mm and its not uncommon in certain applications. Alan
  11. Larger Exit Pupil

    There has to be an advantage with large exit pupils most if not all military kit from tank sights, missile trackers, spotters, rifle scopes to periscopes use them. Alan
  12. Larger Exit Pupil

    It would be interesting to find out the role of a big objective when the exit pupil might be 20 mm or so, my thoughts are that all of the objective is still used for example you could have a big hole in any part or the middle like a Mak and still produce a complete image. Alan
  13. I do like the CO2 fire extinguisher approach to cleaning mirrors, a few big scopes do this.. Alan
  14. With lenses the odd mark and light dust has little effect, I however inspect them regularly and clean them if any residue or other organic contaminants are found, nothing worse than coating/glass eating critters. Alan