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lukebl last won the day on November 8 2018

lukebl had the most liked content!

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About lukebl

  • Rank
    Red Dwarf

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  • 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. I had another go at setting it up, this time with the GPS unit dead level and completely out in the open and it seemed to work ok. I wonder if it was just the location of the box that was causing the problem, rather than the antenna. I know that it couldn't be the GPS rollover date issue, as the unit was simply not picking up any satellites at all. Anyway, I never did manage to capture the occultation anyway, as I'd had a busy weekend away from home and was completely dead beat!
  2. I have one of these GPS Time Video Overlay Units for timing asteroid occultations. It used to work fine, but lately it finds it very hard to get a GPS fix, and I just get the message 'GPS BAD' on the screen, indicating that it can't get a signal. Testing it today, in preparation for an occultation early tomorrow morning, it just won't get a GPS fix at all, even if I put the antenna in a good location. Any ideas about what's wrong?
  3. Tomorrow, 11th May 2019, will be the tenth anniversary of my joining this magnificent forum! In that time, I started off with a 200mm Newtonian, before acquiring and subsequently re-selling various CCDs, DSLRs, 12" SCTs, bigger Newtonians, TAL refractors and Klevzov-Cassegrains, and learning a huge amount in the process. I've scaled down now to just the 200mm Newtonian (the best budget all-rounder telescope IMHO), plus a 203mm f/8 Ritchey–Chrétien. If someone would just give me a 32" Dobsonian, then I'll feel that my collection is complete. In these ten short years I've seen a huge advance in the technology available for us in this hobby to keep the interest kindled, and the bank balances low. I've seen and captured images of things I never dreamed possible when I started, such as quasars, the volcanoes of Mars, a total solar eclipse, hundreds of asteroids, thousands of galaxies and the moons of Neptune and Uranus. Thanks to everyone here for helping to make it such an enjoyable and educational journey, and long may it continue! Keep looking up.
  4. I fear I won't be around to witness it, but it should be an interesting flyby, well -placed for European observers. Apparently it will get up to magnitude 3 and have an apparent diameter of nearly 2", so noticeably different from the background stars with a good telescope. But moving rather fast.
  5. That's very worrying. The Atik wasn't cheap, and it's not much use if the fan wobbles!
  6. That's a bit worrying, but wouldn't that size of oscillation result in large bloated stars. There are small stars in the image which are smaller that the extent of the oscillation. Surely they would appear at least as big as the oscillation. Plus the fact that other satellite trails appear straight, like this much-enlarged extract from another frame?
  7. Thanks for the responses. I don't have a dew heater, so that can't be cause of the odd stars, and I also don't have a cooling fan so that couldn't cause the odd satellite trail. Also, the trail seems too regular to be simple oscillation of the guiding, especially as other satellite trails are perfectly linear. A wobbly satellite seems to be the only possibility.
  8. Ok, I'll take your word for it! However, Skysafari Pro definitely has it in a different location to your Stellarium image. But, given the timing I guess that's what it must be.
  9. Interesting, although my Sky Safari Pro suggests that Iridium 5 was over 10 degrees away from NGC5907 at the time. I thought that the wavy line might be due to mount errors, but other satellite trails during the same session are stright lines.
  10. 30th April 2019, 23.08 BST. I assume the time is the end of the capture. It's a shame that there's no way of telling how fast it was travelling across the frame, but it wasn't on the previous or subsequent frames.
  11. Here is an image of the fine galaxy NGC5907, the Knife Edge or Splinter Galaxy high up in the constellation Draco. Captured with my Omegon f/8 203mm RC. Unfortunately, the stars are slightly odd-shaped, so I am going to have to bite the bullet and tackle the nightmare of Ritchey-Chretien collimation. This, I gather from various threads, taxes even the most exprienced and technically-savvy practicioners out there, leading many to ditch their RC for something less challenging. Which is a shame, as I think this is a fine robustly-made scope, and designed for astro-imaging in the first place. Atik 428ex, 43 x 300s exposures luminance. 20 x 60s RGB, binned 2x. Field of view 18.6 x 14 arcmin. I noticed that one of the frames included a satellite with a curly-wurly trail. No idea how long it took to pass through the frame, but presumably it was tumbling and therefore of little practical use? Or was it something else?
  12. Great image. Personally, I'd rotate the image so that the plane wasn't upside down!
  13. Not sure which one the original poster is using. Mine is the QHY5-ii. Still pretty noisy. And you can't use binning with it in PHD, which is a shame.
  14. I would have thought that you should easily find stars with an OAG and the ED80 DS, with the wide field of view. My guess is that the QHY isn't focussed, or the OAG prism isn't positioned correctly. I use a QHY5 mono / OAG with my 1600mm FL RC8 f/8. Although for some targets I can't find a star at all, there are usually one or two sufficiently bright to guide on, even with the narrow FOV. The QHY5 isn't ideal for my setup (I really need something more sensitive) but I'm sure it's fine for the ED80.
  15. This is an interesting edge-on galaxy in Draco, also called the Spindle Galaxy. 50 million light years from Earth with an apparent magnitude of 10.7 50 x 420 second frames Luminance, Atik 428ex, Omegon RC8, captured 10/11 April 2019. Field of view 18.6 x 14 arcmin. Just can't seem to get rid of the dust bunnies. Apparently this galaxy marked the location of the North celestial pole about 6,900 years ago, and will do so again in 20900 AD. The North Pole Galaxy!
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