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About Andymod

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    Star Forming
  • Birthday 15/08/1970

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  1. Please help with QHY8L

    So I finally found some spare time to have a go at setting up the gain and offset of my QHY8L following the guide above. Everything appeared to be going well until the final step "Complete a photon response plot of CCD". With the camera capped and an exposure of 0.001secs my mean pixel value is 637 which is above 400 so uncapped the camera and began exposures with 0.025secs, my mean pixel value was 64996. increasing exposure to 0.050 secs and the mean value hits max 65535. I calculated my gain to be 11 and offset 108. The guide suggests the mean pixel value should gradually rise?. Whats going on?.
  2. Hi , could one of the admin please close and remove this thread thank you, Andy
  3. I would consider any reasonable offer
  4. Yes it’s still available
  5. Yes it is sorry for the late reply, haven't had chance to log in for a while.
  6. Please help with QHY8L

    Thanks Steve I will have a read now I have a working laptop charger
  7. Please help with QHY8L

    I will go 600 secs next time out and get a full suite of calibration frames, although now my laptop charger has decided to give up charging, it will have to wait until I get another charger. Just my luck at the moment.
  8. Please help with QHY8L

    300 secs and only 4 in stack. As soon as I can I am going to setup my camera gain etc again and capture a decent amount of subs and a full suite of calibration frames. My interest in the QHY8L has been resurrected. A Massive thanks for everyones input.
  9. Please help with QHY8L

    Hi Thankyou for all your help, I set the cooling at -20C. The fact that you managed to get anything is a great help. I can try and achieve an image knowing there is data there. Should I be worried about the level of noise?.
  10. Please help with QHY8L

    OH MY GOD!!!! Thankyou for your help, I cannot believe that is my data. Correct me if I am wrong, my spacing is reasonable? and if I take Darks and Flats I should see a marked improvement?.
  11. Please help with QHY8L

    Link for autosave file from DSS. No calibration frames were used unfortunately, But to be honest any image would be a huge leap forward for me. Thankyou for your help. Autosave.tif
  12. Please help with QHY8L

    Really, That's interesting on my laptop I see a very green image with rings of varying brightness. I have learnt more in this post than I have in the last year. I have a friend at my local astro society who tried to process the last light frames of M45 I took with the QHY8L. He failed to produce anything and suggested my camera may be faulty.
  13. Please help with QHY8L

    Hopefully this Tif image may illustrate the issue better. rosette qhy8L.tif
  14. Please help with QHY8L

    Really, that's encouraging. Its difficult for me at the moment because I am not sure if its my limited processing skills or an error with setup/camera operation or both which is letting me down.