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lukebl

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lukebl last won the day on November 8

lukebl had the most liked content!

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About lukebl

  • Rank
    Red Dwarf

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  • Gender
    Male
  • Interests
    Norfolk Astronomer, bread-maker, bug and wine enthusiast. Come to Attleborough. At least it's not Watton.
  • Location
    Central Norfolk-ish somewhere, UK, 52°N 1°E ish
  1. Here's a thing we don't see very often. This intriguing tangle is a brighter part of the vast Spaghetti Nebula, also known as Simeis 147, SNR G180.0-01.7 and Sharpless 2-240. It's a supernova remnant with an approximate age of 40,000 years, and about 3 degrees across straddling Auriga and Taurus. This shows an area of 29.2 x 21.8 arcmin centred on 05h 42m 42.103, +28° 22' 14.470". Very faint, hence about 30 hours of imaging. Very little O-iii signal, but what there is forms bright lightning-like blue streaks. 42 x 15 mins O-iii 24 x 20 mins and 33 x 15 mins HA Atik 428ex, 200mm f/5 Newtonian, off-axis guiding with a QHY5-ii.
  2. lukebl

    Mars /Neptune encounter animation

    I managed to get this rough colour image by combining the last 6 Red frames and the first 6 Blue frames, so that they could be combined without too much movement from Mars. Just 6 x 15 seconds for each of blue and red, 2x binned, synthetic Green using Noel's Actions. Not super quality, but it really captures Neptune's colour.
  3. lukebl

    Mars /Neptune encounter animation

    Thanks folks! Yes, that's Triton right next to Neptune. I'm always surprised at how bright it appears in images.
  4. Hi all, This evening I intended capturing some RGB images of the Mars/Neptune encounter, but I hadn't bargained on the buffeting winds and the sheer speed of Mars's movement. The result was that it wasn't possible to align the RGB channels. However, I managed to create this rather neat animation. 6 x 30 second exposures, 5 minutes apart. Atik 428ex, 200mm f/5 Newtonian. Triton showing up well. It was a splendid sight! Here is a stack of 5 x 30 second exposures. For once, I quite like the dramatic effects of the diffraction spikes and other optical effects.
  5. lukebl

    M33 - RGB

    Brilliant! And you also appear to have captured asteroid 1049 Gotho just above the top of the galaxy.
  6. Here is my capture of PN G75.5+1.7, the so-called Soap Bubble Nebula in Cygnus. A lovely but very dim object. Hence the stars in this image are somewhat overcooked to bring it out. The weather hasn't been kind at all, and it is fast disappearing behind my roof in early evening. Sadly I don't think I'll have much opportunity to add to it. This was the result of nearly 20 hours of imaging over seven nights during the past month during the brief gaps in cloud cover. Atik428ex, 200mm f/5 Newtonian. Off-axis guiding with QHY 5-ii cam. 13 hours of 15 minute exposures in O-III, and 7 hours of HA. Field of View 19.6 x 27.8 arcmin. It's a fascinating object, which was only discovered by amateur astronomer Dave Jurasevich as recently as 2007.
  7. This reminded me that they had a similar close encounter in January last year. Here's my picture of it. Neptune is the bluish object lower right, and if you look at the bigger version you can just make out Triton at 3 O'Clock.
  8. lukebl

    Binning in PHD Guiding

    Unfortunately, that doesn't seem to be an option: I just wondered if I could somehow 'fool' PHD into binning, given that it doesn't seem to have this option with the QHY5 but that I know binning is possible with this cam.
  9. Hi folks. I use a QHY5-II Monochrome camera and and Off-axis guider for guiding. Finding stars is usually no problem, but I'm thinking of getting a longer focal length scope, and the QHY5 might find it difficult to find a star so I thought binning would be an option. However, there doesn't seem to be an option in PHD2 for this camera to capure with 2x2 binning. I know the camera can be binned, as you can do it in Sharpcap. Any idea if it's possible to bin captures in PHD?
  10. I've just been processing some images from a couple of nights ago where the target crossed the meridian, and I just let it carry on without a meridian flip. I realise that some of them were captured with the target 4 hours past the meridian, and and guiding was still perfect with 15 minute exposures. Meridian flips are just so much unnecessary hassle!
  11. Here's an odd little planetary nebula, the so-called Foetus Nebula in Cygnus. A bit small for my focal length. 22 x 300s OIII, 15 x 300s HA. Atik 428ex, 200mm f/5 Newtonian, Off-axis guiding with QHY5-ii. Field of view 26.2 x 20.4 arcmin.
  12. I wasn't aware of this conjunction till I looked out this evening. A beautiful sight. So I grabbed the camera and captured this quick shot. Canon 6D, 0.3 sec, Canon 70-300mm lens @ 170mm f/10, ISO 4000
  13. Here's my take on Messier 76, The Little Dumbbell Nebula in Perseus. Just HA and Oiii subs, with the green channel composed of of 50% HA and 50% Oiii, and the Luminance layer solely HA. 7 x 1200s HA, 10 x 300s Oiii. I always prefer muted colours, so I have toned down the saturation. Atik 428ex, 200mm f/5 Newtonian, NEQ6, Off-axis guiding with QHY5-iii
  14. Hi folks, I was having a go at some HA imaging of the California Nebula (NGC 1499) last night, but only managed 5 x 15 minute subs before the clouds rolled in. However, I stacked the images anyway, and noticed that slap-bang in the middle was a bright asteroid trail. Being a huge fan of asteroid tracking, it's odd that I didn't know it was there beforehand. It turns out that it's Asteroid (584) Semiramis, a 27km-wide object discovered in 1906 which is currently as bright as mag 10.8. It won't be this bright again for a few years. Atik 428ex, HA filter, 200mm f/5 Newtonian, 5 x 900s exposures, Off-axis guiding with a QHY5-ii. A bit noisy due to the lack of subs or calibration files. And here's an animation of the 5 images, warts 'n all:
  15. Here are the current results. Mine is number 1
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