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About cuivenion

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    Sub Dwarf

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  1. cuivenion

    M106 ASI224

    Cheers I'll give it a try.
  2. cuivenion

    New PHD2 Z-filter algorithm

    Is similar to how Metaguide works?
  3. cuivenion

    M106 ASI224

    Thanks wimvb. I did use deconvolution but I'm still getting my head round it. I made a PSF and applied it at the linear stage and that's the result. I may be better off using slight sharpening instead. There's not that many stars in the fov so maybe the PSF model isn't great.
  4. cuivenion

    M106 ASI224

    Nice kit, looking forward to seeing the results.
  5. cuivenion

    M106 ASI224

    Thanks, it's a more difficult target than I gave it credit for. The outer arms are very faint compared to the center, good luck with your version. What camera/scope are you using?
  6. cuivenion

    Deep sky imaging showcase 2018

    Hi,, All images taken with a ZWO ASI224, Skywatcher 130PDS and Skywatcher HEQ5. Apart from M27 which was taken with a Skywatcher 200p. Bubble Nebula, 4 hours of 40 second exposures: Iris Nebula, 3 1/2 hours of 29 second and 42.7 second exposures: M27, 90 minutes of 8 second exposures: Crab Nebula, 83 minutes of 30 and 8 second exposures: M82, 150 minutes of 30 second lights: Next step for me is a light pollution filter and another crack at tuning my HEQ5 mount.
  7. cuivenion

    M106 ASI224

    This was taken over two nights in January from my backyard in Morecambe. I was uncertain as to wether to use all the data as one night the seeing was fantastic, the other not so good, plus I didn't dither on the bad seeing night. I might have another go with just the data from the better night. Scope: Skywatcher 130PDS Mount: Skywatcher HEQ5 Imaging Camera: ZWO ASI224 Guiding: Finderguider with GPCAM AR0130C Software: Sharpcap 3.2, PHD2, Deepskystacker 4.2, Pixinsight 6 Hours 30 minutes of 30 and 49.2 second exposures 100 Darks, 200 Flats + Dark Flats per night Any comments and constructive criticism welcome as usual.
  8. cuivenion

    Most satisfying observations?

    1. First time seeing Saturn. I was about 8-10 so about 30 years ago. It was through the large Newtonian at Salford Observatory. Absolutely blown away. 2. Second time seeing Saturn in a scope. I'd let the hobby lapse in high school, one of my big regrets. About 5 years ago my wife surprised me at Christmas with a Skywatcher 130p on a EQ2. Took it out not really knowing what I was doing, pointed at a bright star. Saturn! Nowhere near as large as the first time around but very sharp. I was hooked all over again. 3. I was about 5 years old walking home with the family after a Christmas visit to the grandparents. It was one of those still winter nights with stunning clear skies, and I couldn't stop looking up.
  9. cuivenion

    Capturing fainter data

    Cheers Wim.
  10. cuivenion

    Capturing fainter data

    Thanks Wim. I had the best seeing for a very long time last Sunday and got about 5 hours of good data on M106, making sure I dithered every 5 minutes. The data's that good (for me) I'm thinking of completely discarding the previous data I had because it just seems to mottle and brighten the background. I'm going to make sure I dither on each project from now on. I wish I could get away from my urban backgarden but unfortunately it's not an option at the moment, I can see how dark skies would make a huge difference. I use Sharpcap for image capture and it has an interesting feature called the Brain. It analyses the sky brightness and gives you an optimal exposure time and gain. You have to have previously analysed the camera with Sensor Analysis tool. I got a low gain (18) with a 50 second exposure last time out that worked very well. The relatively low exposure time points to the low read noise of the camera and, I would imagine the light pollution in my area. Would a light pollution filter help with this? I was thinking of going for this: https://www.firstlightoptics.com/baader-filters/baader-uhc-s-filter.html
  11. cuivenion

    First serious AP attempt with a Sony A7 on M42

    Apparentaly you can do 30s non bulb exposures without star eater kicking in then. As well as removing stars it can punch holes in them making them look defocused. But if you're getting good results more power to you.
  12. cuivenion

    First serious AP attempt with a Sony A7 on M42

  13. cuivenion

    First serious AP attempt with a Sony A7 on M42

    Apparently a lot of the Sony A series camera's have a noise reduction function that removes stars, dubbed 'star eater'. This function can't be turned off and kicks in on exposures of 4-30 seconds depending on the model and firmware. This is why they're not used more often by astrophotographers.
  14. cuivenion

    February 3, 2019: First HH and Flame

    Great images, I'm going to have to try modding my 500d at some point.
  15. cuivenion

    Dealing with dew

    I use a cardboard box on its side for my laptop. I tape the box to the table so it doesn't move.

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