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Hallingskies

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Hallingskies last won the day on November 10 2020

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  1. Target has finally gone under the adjacent rooftops just as the clouds were making a nuisance of themselves, so time to drag the kit in. Subs look a mess, a blizzard of stars and gradients, will be fun trying to clean them up and see if there is much hiding in them.
  2. -0.5 degrees on the rig. Hooray for wireless connections. Clouds have stayed away from my target, got the subs I wanted, will leave cycling r to g to b for another hour or so for some bonus subs until the houses (or clouds) get in the way.
  3. I seem to be getting away with it, just two smeared subs despite the odd bits of cloud scooting over. Got 6 x 600s green subs in the bag, now switching to blue before my luck runs out. Last two nights have been a real bonus, considering CO said pretty much nothing doing...
  4. Set up and running, hoping to grab some green and blue frames to finish off my Sh2-273 image. Got the Ha last full moon and cloud-dodging got me the red subs last night before it got too persistent for 600s exposures.
  5. 12 x 600s in Ha using a Samyang 135mm @F2.8 with an Atik 460 under a 100% full moon...
  6. As is usual, the only clear night in weeks for me has a high haze giving a colourful halo around the 100% full moon. Still, beggars can’t be choosers and I am testing out my new wide(ish) field rig on the Cone Nebula. Purest optimism on such a faint target given the conditions, but at least the equipment is all working as it should (touch wood) and the focus point on the Samyang 135 is not too far off optimum. Will probably go for 12x600s in Ha at f2.8 and stop there for the night, then stack to see what the star shapes are like. Not looking too bad on single subs at the moment...
  7. Just tried some calibration frames with my under-used SX694. The master dark appear to show a dead column and faint diagonal banding. The flats show slightly uneven illumination at the top edge, though I think this might be a shadow of the OAG. Do these seem "normal" or workable for imaging purposes? I must admit I am rather lazy and don't normally use darks or flats, preferring to use a hot pixel filter and a clean optical path instead (though I do have to use flats with RGB - I can usually get away without them in narrowband for some reason).
  8. I don't plan to go back to this one - the noise arises from the monumental stretch I had to apply to get this one to show any detail, particularly in the blue colour channel. Interestingly, I note that the IKI narrowband data (garnered from more and longer subs from Spanish skies) on That Other Forum also gets a bit noisy when you stretch it out, so I don't feel too bad about my own effort.
  9. We get 5 cm of snow and it shuts us down! Still, if global warming predictions are right, the UK will start seeing Ukraine-type weather in the future...
  10. I've been following some of your amazing build projects, stuff I couldn't even begin to do. Could you build a cloud zapper?
  11. I think we are due -5 in SE England on Weds, guess that's tropical to you guys!
  12. I think this run of cloud is unprecedented - I can't remember anything like it in the last 15 years. Global warming I suppose...
  13. Date: November 2nd, 3rd, 4th, 15-16th. 2020 Equipment: ATIK 460EX with EFW2, Skywatcher f5.5 Esprit 100 ED refractor, Avalon Linear mount, guiding with Lodestar X2/PHD Subframes: 47 x 600s Ha, 10 x 600s each for RGB (2x2 binned), flats, no darks (hot pixel removal in Astroart)
  14. A good rendition: I find this a tough target as well, having never got a result I've been happy with in 15 years of imaging. You've picked up some of the dusty stuff, well done.
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