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Mr niall

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About Mr niall

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  1. I am so sorry I forgot I’ve literally just bought one from @billyharris72. I’ve been looking for one for so long I’m still in “find a finder mode”. A thousand apologies
  2. Is the finderscope a straight through? If so dibs please!
  3. I was reading the following article: https://www.skyandtelescope.com/astronomy-news/possible-interstellar-comet-headed-our-way/ A man called Borisov discovered a comet. Lovely stuff! Borisov works at an observatory. Super. But what has really foxed me is that it looks like he caught this comet using what appears to be a sort of richest field dob. At 650mm it looks like a fairly specialist instrument. But he made it himself which is pretty cool and from the photos of the scope - and the photo's of the comet itself - it looks a lot like it was captured using an untracked mount. So essentially an observer, with an amateur scope, that they made themselves, without tracking, captured a comet. I'd guess he's probably still using a capture and plate solving software based solution rather than the ole "George Alcock" method - but still, in 2019 that's pretty amazing. I thought NASA had fleets of satellites up there doing the same thing and he's beaten them all to it. Gives us all hope!
  4. That's great news - maybe they've made some changes over the last couple of years. Would be great if they had cos the scopes are amazing. Best of luck.
  5. Personal opinion: Great scopes, amazing mirrors. "Variable" customer service, rarely answer emails, almost never return phone calls. Scope quality extremely variable; good one's are spectacular - the best there is. Many others have issues that take a while to rectify. For some reason, nothing takes a hit in terms of value like the resale value of an OO scope. They seem to crash in value the moment they leave the factory. I nearly bought an OMC 140 about 18 months ago but the focus knob stuck and made a grinding noise every revolution, felt like the mirror was going to fall out... Looked amazing in carbon though.
  6. They're both discretionary. You want to keep the F number as low as possible taking into account that most lenses show some bloat the closer they get to being wide open. I don't know your lens but you could google it I imagine people out there will have an opinion. Obviously the wider aperture the more light comes in so the more information you get but sometimes at the expense of sharpness. If you're not sure I'd go one stop up from your smallest stop to be on the safe side. If you're shooting from a fixed tripod then you follow the 500 rule - that is 500/focal length of lens = maximum exposure in seconds before star trails. It's useful as a rule but in reality you're talking about 20-25 secs.
  7. Don't use 3200. The best ISO for the 600D is definitely 800 ISO. http://dslr-astrophotography.com/iso-values-canon-cameras/
  8. Hi all Just Bins left now; Celestron Skymaster 15x70 binoculars, with original case. Includes Opticron heavy duty metal tripod adapter. Now £38 posted. Payment through paypal preferred PM me for details.
  9. Sorry Video won't load, but no - it's definitely not a quasar. Bearing in mind the most powerful optical telescopes on earth cannot resolve the closest stars to us (4 light years the Centauri group) as anything more than point sources of light; then that hopefully conceptualises why you wont see a spinning quasar in your 4 inch Mak, but from what you describe I can see where you are coming from. It would be pretty cool if it were the case. I think what you are describing is atmospheric turbulence. The stars do wobble about a fair bit, especially lower one's nearer the horizon. If you imagine the mirage's and heatwaves that you get in the distance on really hot days - well that's kind of what happens in the atmosphere too. And a telescope has a lot of atmosphere to look through. All normal.
  10. If my maths is right I think you've photographed an area about 190 miles across the diagonal from corner to corner.
  11. No... you definitely haven't. You'd need a telescope in excess of 75 metres eg 750 times bigger than your Nexstar 4 to be able to see it. I love your enthusiasm but it might be worth researching what your Nexstar 4SE is actually capable of resolving (in the same way it can't see the rings of Uranus). Nice picture though.
  12. I've got a pair of Celestron Skymaster 15x70s that I'm about to sell but I haven't got round to it yet. I've got the Opticron heavy duty tripod adapter too. I don't think I'd want much for them - probably about £35 (and a couple of quid for postage)? If they'd be of interest to you let me know. Just a thought, no probs if not I'll just stick them in the classifieds. I love them but really wanted something hand held so bought a pair of 10x50s, definitely noticed the drop in aperture but they're a bit easier handheld. It was my intention to do the whole messier list from my back garden but when I realised I could only just about make it M51 and M101 with a 12" dob then... well it kind of put a stop to that though. Hoovered up at least 30 or 40 though even from light polluted skies. M81 and 82 were a nice surprise.
  13. Yeah - I debated using a 130pds on one for some visual grab and go but FLO advised against it so 150 is probably way out. It's code for "don't do it!!" it means as you get close to the limits of what a mount can theoretically hold, the pleasure of using that mount drops dramatically. The whole thing becomes a bit wobbly and bouncy and "feeling like it might let go even though you know it shouldn't". Always best to go belt and braces, 2/3 of max weight of the mount including tube rings and accessories etc is a sensible maximum. If you've picked up a 150PDS with coma corrector then, well, you've bought an astrophotography oriented camera. You'd be well advised to think about getting a HEQ5 to plonk it on. A normal EQ5 would work too.
  14. If you go to binocularsky.com you'll find everything you need there. Steve does a monthly newsletter as well with all the best targets for the month.
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