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groberts

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About groberts

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    Surrey, UK
  1. 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
  2. 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
  3. 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
  4. 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
  5. Ah - good luck. I'll look forwards to hearing how you get on.
  6. Thanks Dave et al, I'll give it a go. Graham
  7. 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
  8. 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?
  9. Thanks John, sounds great - can you confirm: As the X2 does not have square pixels, can you confirm what size you input for the purpose of using Sharpcap / Polar Alignment / Plate Solving; Is there a specific ASCOM driver required or as there's already that works with PHD2, will this do the job? Graham
  10. That's encouraging, thanks. Graham
  11. I'm planning to use Sharpcap for Polar alignment, which gets good reviews, using a Starlight Express Lodestar X2 mono guide camera, combined with a William Optics 200mm FL x 50mm guide scope, which I calculate provides a FOV of 1.85 x 1.38 degrees. I've been using this set-up successfully with PHD2 for sometime. Given the above parameters + before proceeding further with Sharpcap I wanted to confirm: 1. Will the pixel size of 8.6 x 8.3 nm, which is not square, work OK with Sharpcap and plate solving, which I understand is an integral part of the polar alignment routine? 2. Will the installed ASCOM driver for this camera used with PHD2 be OK with Sharpcap or do I need something else - if so which one? Thanks, Graham
  12. Thanks Vicki, will give it a try
  13. That's excellent - so how do you create a colour moon please?
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