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About groberts

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    Proto Star

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    Surrey, UK
  1. If it hasn't already sold I might be interested, please get back if it doens't go to Denmark. As an AZEQ6 owner with a WO GT81 I've been thinking about going dual for imaging with an identical scope + ZWO 1600 cameras & guidescope but thought the total weight might be too close to the mount's imaging capacity - would be interested to know what your experince was with what a appears to be similar set-up? Thnaks, Graham
  2. That's a truly great image of M31 and very interesing in black & white. Well done
  3. Thanks all, some good advice + seems to bear out my concerns: (a) zoom is probably not the way to go, and (b) tend towrds the lower end of magnifaction Regards, Graham
  4. I'm looking for a monocular for general use just to carry around and look at birds, distant views etc. and would apreciate any thoughts from any monocular owners regarding (a) desirable spec and (b) any specififc monocular - budget up to £100. I'd been hankering after the Helios 10-15x42 Zoom but have been unable to track anyone with these is stock any longer and now considering a similar Orion version https://www.astroshop.eu/instruments/orion-10-25x42-zoom-monocular/p,25379 Any thoughts on this would be helpful or would a non-zoom say 10x42 or less mag be better? Thanks, Graham
  5. Nice video Steve. Don't do much solar but have a Bader solar filter for my WOGT81 and as it's white light anyhow, was thinking of using my ZWO1600MM-Cool + Luminance filter rather than DSLR. Will this work? How do I deal with focus - it's already focussed for deep sky, so I'm presuming that'll be OK? What sort of settings should be used re. exposure? Multiple exposures for stacking or just single? Any other advice? Thanks, Graham
  6. Hitherto I've always used the Search list provided to locate, slew and sync an object. Alternatively using specific RA & DEC coordinates, how can I input this information so as to search and then slew to the said object using Cartes du Ciel? Furthermore, can such data be permanently stored so as to search and return to the object at any time in the future? Thanks, Graham
  7. Looking for a spare power adapter for the ZWO ASI 1600MM-Cool mono camera and just thought I'd check on the best spec. + supplier; think this second generation camera bought about 2-years ago. The present adaptor is: Sunny model SYS1357-2412, Input 110-240V 1.0Amax 50-60Hz, Output 12V-2A, 24W max. However, looking back at the manual it recommends 12V-3A for best performance not 2A. Will this really make any difference - what are others using - any recommendation on specific adaptor model & supplier? Many thanks, Graham
  8. Like the Eagle but particularly impressed by DWB 192. As you say it is feint even with 6-hours integration time but rather intriguing and would be good to see with greater time and other wavelengths - if you have the conditions & patience? Thanks for posting. Graham
  9. I've participated in a number of excellent MOOC courses (Massive Open Online Course) in the past regarding astronomy / astrophysics / relativity / gravity / Higgs Boson etc concerning a broad range of subjects with the Open University, Edinburgh University, Princeton etc. The courses are free and generally have been of an excellent quality with top lectures, including Peter Higgs himself on the Higgs Boson just after its discovery! I'm now looking for one such course that covers stellar evolution in more depth and wondered if anybody could direct me to such a MOOC on this subject? There are a lot of astronomy overview type courses that include basics of stars + other stuff but I'm looking for something a bit more focused. Any ideas would be much appreciated. Thanks, Graham
  10. Ah - good luck. I'll look forwards to hearing how you get on.
  11. Thanks Dave et al, I'll give it a go. Graham
  12. John - I'm now confused, I thought the whole point of the Sharpcap PA was that it works so long as you're within 5 degrees FOV of the Pole star and, I had thought that could also be using the guidescope - though I see Francis's point regarding guidescope / OTA alignment error. Using the ZWO 1600 + WO GT 81 OTA my FOV is 2.12 x 1.60 degrees and the guide scope with the Lodestar is 1.85 x 1.38 degrees. So what are you using Sharpcap with to refine the alignment - your OTA + if so what is the FOV? Graham
  13. OK got it, so use the main OTA for alignment? As you're then using the guide scope with PHD for guiding anyhow, wouldn't such a misalignment between the OTA and guide scope then introduce guiding error anyhow, which is what I'm trying to improve? In that case I need to check the FOV, which I believe is max 5 degrees for Sharpcap?
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