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coatesg

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coatesg last won the day on May 11

coatesg had the most liked content!

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About coatesg

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    Proto Star

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    https://www.chromosphere.co.uk

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    Male
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    West Oxfordshire
  1. Excellent image, another faint bubble lurking in Cygnus!
  2. coatesg

    LBN 437

    Really nicely presented - a dolphin jumping the ribbon of hydrogen!
  3. First time I've used both in anger and I'm really impressed by them. Comparing the cam to my ST2000XM: it's a huge step up in terms of sensitivity and low noise. Pixel size works really well at this FL, and think I would bin 2x on my larger newt which should give some gain in SnR. The lens was a proper eBay steal as well so more's the better! Really liking it
  4. Yep - I think it was something cheap off eBay or Amazon. Works fine though!
  5. Yes, the iris is wide open, and I am using a 72-52mm step down ring that goes on the front of the lens, could maybe use a second and go to something slightly smaller.
  6. coatesg

    Ngc 6914 Hargb

    Definitely - would like to do this as a close up at some point.
  7. Taken from Domaine des Mathevies, Sainte Nathalene on nights of 10th/11th Aug, this is an image of the Coathanger (Collinder 399) in Vulpecula and the region of sky to the north, including @ollypenrice's Brontosaurus (though my daughter thinks it's a duck!) that surrounds VdB126/LBN134. I'm also taking the liberty of christening LDN 779/781/782/783 the Shepherd's Crook - we already have a hockey stick and this is far more curved! Some nice reflection nebulae superimposed on the area here. QHY163M on Canon 200mm f2.8/L II (@f3.85), mounted on GM8. LRGB: 166 (1m exp): 98:90:88 (in 2m subs) - all at gain:offset=75:27, using Baader filters. Processing in PI - may need redoing as doing it on a laptop screen in a campsite may not give the best colour/tone balance... There's so many stars!!! Thanks for looking Annotated with some (but not all!) catalogues - busy area of sky:
  8. coatesg

    Bubble HaRgb

    Super star colours, and some lovely detail coming through in the large sharpless object above the bubble
  9. coatesg

    Ngc 6914 Hargb

    Lovely rendition, very nicely done - and a really interesting object (reflection imposed on dark neb, surrounded by hydrogen).
  10. coatesg

    NGC 6164/5

    Great shot - lovely delicate outer shell too!
  11. Hello all, Back into astroimaging post the mid-summer hiatus - we're on holiday in France (currently in the caravan down south between Toulouse and Tarbes), but the portable kit came with me. The portable kit this year has changed to include a QHY163M and Canon 200mm f2.8L on the GM8 (stripped and re-greased). The site has limited visibility from the pitch (so I have been shooting a couple of targets each night - the others need more work and more exposure - the trees get in the way) This is a double first light - first astro use of the lens and first astro use of the camera. Initial learning curve around the lens and the QHY mount (has lots of play - needs shimming but tweaked using the mounting rings to hold it pretty close to square), as well as choosing the correct exposure for high gain NB work (more later). Here's the first mostly complete image is the N America Neb and Pelican - processed on laptop, but may need redoing on a better screen later on. This is 178 x 2min (5h56m) through a Baader 7nm HA filter (at gain 200, offset 104). Used a 72-52mm step down ring to reduce to f3.85 - perhaps could go to f4/4.2 to improve things a little. Reduced and processed in PI. Presented at 50% resolution for the main image, others are at 100% (the one of IC5068 shows a little funkiness in the stars (but not as bad as the bottom left corner!!) - maybe a bit of tilt still, and also could be sharpened from f3.85 by stepping down a bit further. Moving back north to the Dordogne tomorrow, hope for more clear skies to finish off images and maybe get LRGB to add to this. Thanks for looking! NGC7000 (N America), NGC5070 (Pelican), NGC 5068 (below Pelican) and others... The Wall at 100%: Pelican (IC 5070): IC5068:
  12. I think it refers to the (now disproven) 1995 paper that there was a small (brown dwarf mass) companion - see: http://adsabs.harvard.edu/abs/1995A&A...299..621B Can't imagine the presence of anything very large is very likely (or at least something that isn't very close to A) - anything else probably wouldn't be in a very stable orbit, esp considering that B was previously a much larger star before evolving off the main sequence - the current upper observational limits on orbiting bodies in the system are quite small.
  13. coatesg

    NGC 7822 Red

    SGP will do that as well, as indeed with APT (which is free) - FWIW, PHD doesn't control when to dither - the client software that connects to PHD has to tell it when to do the dithering.
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