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About timwetherell

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    Star Forming

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  1. I imagine if it does go supernova during the initial few weeks it will be like having a permanent full moon so no one will get much of a view of faint fuzzies in that area of the sky! But I think the resulting planetary nebula will be relatively small and fairly dim? There's a bit of discussion about it's size up further up this thread
  2. Yes, good idea to compare with the crab! I'd be thinking crab nebula 1000 years ago now 300 arcseconds across 0.3" per year. Ten times further away but because all the angles are small one can probably just use small angle approximation and say 3" a year (never did have a very comfortable relationship with radians! ) so maybe jupiter size in decade/s? I imagine it would be very bright though?
  3. It would certainly be the brightest planetary nebula in the sky. I'm not sure how long it would be before it's angular diameter was resolvable in amateur telescopes though?
  4. I know what you mean Ron, It would be interesting to see but orion is such an iconic constellation it would be sad to see it without Betelgeuse!
  5. Yes, I think it's a difference in sky brightness between the two nights perhaps - I didn't want to "massage" the images too much though for fear of changing the intensity of betelgeuse artificially
  6. I took a photo of Betelgeuse in February 2019 just because it's a pretty star - Thought I'd take another to see if it really has dimmed as much as everyone says and the difference is very noticeable - (prime focus of a 7" refractor with a focal reducer bringing it to f 5.6. )
  7. Hardback book detailing various observational mysteries/anomalies in astronomical observations of the moon and planets. To be honest, it's a bit dry and academic but some of the anomalies are quite interesting. Asking £6.50 including shipping within the UK
  8. Yes tricky from the UK - all comes down to seeing. I've done it with relative ease a couple of times using a 7" scope but dozens of other times it's simply not there. I have an atmospheric dispersion corrector which helps a bit in removing the vertical fringing
  9. Yes I'm probably a bit out of date, haven't bought a scope in some years Was it the 71 triplet you were thinking of? Looks quite expensive from my brief research! but yes, I think 70ish would be slightly better than 61 especially if you can source one second hand. I'm using a TMB 40mm widefield ortho as an eyepiece - again another piece of astro-kit from the long, long ago. It has the advantage of the field stop being outside the optics so it's easy to install a crosshair.
  10. I use a WO66 and it's great - enough aperture to see most brighter Messiers and small enough to be able to achieve low magnification with normal EPs. It also has the advantage of accepting 2" EP,s so with a 40mm ortho if gives almost 7 degree field which makes it an ideal finder. It's also a nice spotting scope in it's own right and a very capable wide angle astrophotography scope using the main scope as a guide. I actually use this scope as a visual instrument too, very large objects like M31 and the North America nebula look great - the latter especially with an OIII filter
  11. The sitdown sessions are in the early evening at the Kildare Lodge Hotel in Minehead but we do observing sessions out at various places on Exmoor, North Hill and Webbers post being two favourites
  12. Welcome to the West Country! Lovely dark skies, lovely fluffy clouds, lots and lots of em I think your nearest club will be the North Devon Astro. Soc, but if you're ever a few miles further east on Exmoor you'd be very welcome to drop in to one of our Exmoor StarGazers meetings too.
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