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Size9Hex last won the day on September 29 2016

Size9Hex had the most liked content!

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About Size9Hex

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    Proto Star

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    Hampshire, UK
  1. Really useful post. Thank you. I’m not picturing a 120mm as grab and go in my house either. The 72mm on AZ5 just about ok to take out in a single trip. It’s a nice set up for observing, but for carrying, it’s an awkward top heavy shape, and not much clearance passing through doors. Wouldn’t fancy a 120mm as a single trip in my house, which was part of what got me thinking that a 150mm might not be much more hassle for set up (albeit heavier, pricier, etc) - the OTA and mount still being separate trips. That said I’m leaning towards a 120mm after all the replies here.
  2. Size9Hex

    9th Jan 19

    Nice report. Sounds a great session. M101 is a tricky customer. Large but with a low surface brightness hence it gets washed out by light pollution without putting up much of a fight. Look for the brighter core. A dark site will help for sure and conditions need to be good to reveal the arms. With the 10" and mag 6 skies, I can just make out brighter star forming regions in the arms. It’s a target I’m keen to explore again! It’s also early in the season; Around April it will be a lot higher in the sky (for an evening session) which will make it prominent than if was closer to the horizon during your session. . Sterling effort! . That’s a good technique. Sometimes a little movement can help reveal something on the edge of perception as you’ve noted. On a given night, you might find yourself using this technique on a really tricky target, and getting maybe only a half a dozen of the briefest glimpses over 5 or 10 minutes. But as long as they’re consistent glimpses...
  3. I’d spotted what looks like an equivalent scope from Altair but wasn’t aware of the TS version. Looks awesome with some nice features, so interested in Louis’ question too. Low power binoviewing of nebulae especially looks a really nice feature. Much easier to see low contrast differences with two eyes than one.
  4. Thanks @GavStar. I may need to show that photo to the boss. “At least I’m not asking for this many!”
  5. Thanks John. That’s really helpful. Seeing those two scopes side by side is quite telling, as is your comment about looking for a different design. All replies so far have been super helpful and I can start to see which way I’m leaning. The 150mm in your photo, well, if it was dual mounted with my 72mm pointed up at zenith, one eyepiece would be on the ground and the other up in the sky! Borderline whether I could reach any slow-no controls on the mount too!
  6. Thanks Gav, it’s nice to hear a view that’s a bit more pro big scope (not to suggest any right or wrong views on it). If I may ask, what would you pick if you could only have one in the 130/160mm space?
  7. Funnily enough, I taken a similar route. My first frac was an ST102 (which I’m going to sell if I upgrade as per this thread), then dropped down to a 72mm ED which I felt was more versatile (especially under suburban skies) if less powerful. Like the sound of your set up.
  8. Thank you Mike. Terrific reply and very helpful towards the decision.
  9. Thanks Stu, useful comments. You mention dark sites. When I consider the 150mm, it’s hard to picture it ever going to a dark site, whereas the 120mm probably would.
  10. Agreed. This is a great forum. Huge thanks to everyone who’s replied so far and added their knowledge and experience. Really appreciate it.
  11. That may be well be the quote that decisively steers this one...!
  12. Thanks, it definitely does helps (as do all replies so far). That heavy duty mount you mention is something I’ve thought of. Looking at the weight of the 150mm and mount, it’s a case of setting everything up and there it stays, which is maybe ok, but a 120mm could be set up then moved across the garden on the spur of the moment when Jupiter of whatever appears from behind a hedge.
  13. Thanks Charl, that’s really useful feedback that the 150s have come and then gone. I guess not worth it despite the extra horsepower.
  14. Thanks Peter, that’s a really useful suggestion. I didn’t say above, but one use would be solar white light, but I did wonder if a smaller frac with a larger mak would be a good combo, and then I realised I was getting ahead of myself already planning scope n+2 . Food for thought though.
  15. Wanted to ask for some advice on a possible purchase please, assuming I get permission from the boss... My main scope is a basic 10" dob, supported by a 72mm ED frac. Since getting the frac, the dob hasn’t appealed as much for doubles, lunar and planetary despite usually (but not always) showing more detail. So I’m looking for a bigger ED frac with more horsepower. Current thinking is that a 120mm (ish) would be manageable and a worthwhile step up from the 72mm. But for planetary in particular, would it be worth going bigger, with 150mm being probably the upper limit? I guess I’m trying to balance performance (especially planetary) vs. hassle. A smaller scope might mean a bit more budget for something other than a basic model. But if a 150mm is capable enough to become the planetary scope of choice (rather than the 10" dob) then it’s tempting. Or is this just aperture fever? Either way, a new mount would be needed, with intention to dual mount with the 72mm. All comments, advice and opinion really appreciated. Thanks!

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