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Marky1973

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About Marky1973

  • Rank
    Sub Dwarf
  • Birthday 07/08/73

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    Male
  • Location
    Gloucestershire
  1. Astrophotography books

    Hi Emil I have no idea how they compare, but I have a copy of this book https://www.amazon.co.uk/Astrophotography-Thierry-Legault/dp/1937538435/ref=sr_1_6?ie=UTF8&qid=1505493949&sr=8-6&keywords=astrophotography which does a pretty good job with the technical side of things - I think you can have a "look inside" on the Amazon website, so check out the contents to see if it has the things you are interested in. But I found it quite useful and easy to understand. I also have this https://www.amazon.co.uk/Philips-Astrophotography-Mark-Thompson-Photographing/dp/1849073147/ref=sr_1_10?ie=UTF8&qid=1505493949&sr=8-10&keywords=astrophotography which is a much lighter tome than the first, but still has some good hints and tips - and seems to be very cheap at the moment! To be honest, there are a lot of books out there, and I struggled to figure out where to go after "making every photon" but these two have served me well! Good luck!
  2. Hi there - I'm no expert, but the reducer apparently does act as a field corrector IIRC. I really don't know for sure but is the effect more rotational than coma? Hopefully someone who actually knows what they are talking about will come along soon! But, regardless, that's a really nice image....I have the C9.25 as well and will hope to try some imaging with it at some point, so that gives me hope! :-)
  3. 1st attempt (be gentle)

    Yep great shot!
  4. Thanks Chris....I'll have a look at that as well next time I am out - pretty sure I have always had that ticked, so maybe I have been making life more difficult than it needs to be all this time!?
  5. Thanks to you and Ken then I guess....although it has been a long time since I was a schoolboy! Although not so long since I made an error.....I think what might have happened is I use Google Remote Desktop on my mobile while I am centering targets so I may have pressed the PRE check box at some point.....will make sure I switch it off next time I use it.... then all I need to do is figure out how to find the nebula again! :-)
  6. In case it helps, this is a JPEG of one of the 180s subs I took last night while testing things.... I can't imagine there are any light sources causing this problem as I was imaging from the same place I pretty much always image, and there was nothing obvious causing trouble with the guiding scope/finder scope....will go check all my joints are tight now!
  7. Like your optimism Carole...I didn't even make it to taking any subs! :-) All-in-all a pretty bad session....still it did mean I was up late on my own and got a cuddle with our new rabbit! :-)
  8. Yeah, been wanting to try out some Ha imaging an started on the Wizard a few months ago, but have onyl managed two sessions since beginning of June. I know I should be happy that I got 30 minute subs and made the most of the short imaging time for June/July, but it was bad enough not being able to find the target last night, let alone the odd images coming back! I am sure I will get it to work again and keep going, but it sometimes just drives me insane - just feels like a wasted evening! Onwards and upwards! Good luck!
  9. Hi Ken, thanks for that - yeah, I presumed that was what you meant, but wasn't sure if I had pressed it by accident, or whether it is checked by default...gives me something to explore later though! Thanks
  10. I use the mains via an ATIK adapter purchased from FLO and have never had any problems in the past - I'll have to have a fiddle today and see what happens. Cheers Mark
  11. Will take a look - the data is all on my other laptop which is sat under a pile of cables that I dumped in storage last night in a huff! :-) I've never knowingly changed either of these settings, but will double check next time I am playing around to see if they have been hit by mistake. Thanks
  12. Nightmare evening tonight...clear skies and set up early. Spent ages polar aligning then aligning mount, centering and slewing to Wizard's nebula to get some more subs, but can't for the life of my find it....probably just one of those things and very frustrating....however, the real issue is that I started to worry when I saw the images coming back from ARTEMIS....what could be causing this glow in the corners? I have a dew shield/light shroud on the ED80 and there are not lights on nearby that could be causing it. The images that were looping for alignment/focusing etc were not showing this. It was only after slewing to what I thought was the wizard and upping the exposure length to a couple of minutes that it appeared. I've been running a number of subs and it is appearing on them all. Really frustrating and a waste of a rare clear night. If it's not one thing it is another! :-) I have so little time for this, it is very tempting to jack it all in until I retire! :-) Any thoughts would be much appreciated. I'm going to pack up.....
  13. Wizard's Nebula in Ha

    yeah I need to get into dithering I think Sonny, sort out those black spots! Had a look at the two images on another screen today and the second looks badly stretched compared to my home laptop/phone, so can really see what people were talking about now....have made this a summer project so will keep trying to get more subs whenever there is a clear night!
  14. Wizard's Nebula in Ha

    Will do! I stuck with the original calibration frames I took - I figured I can get away with that as I don't move the camera/filter wheel etc between sessions....might grab a few more darks when I get the chance.....the windows of opportunity are just so narrow at this time of year! :-)
  15. Wizard's Nebula in Ha

    Yeah, now I look at it on another screen it does look a t bit too far.....it's a fine line.....and I can never get it right.....more data.....more data....
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