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Lux1

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About Lux1

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    Star Forming

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    Cornwall
  1. I've messed up somehow, It reaches focus about 10" out from the focuser Sent from my iPhone using Tapatalk
  2. Well my prototype is sort of finished. I ned to make a secondary spider as I'm not happy just bodging this one in. I've used PVC pipe and copper tubing to keep the entire cost under £40. Time to fit the main mirror, align and point at the horizon.... Sent from my iPhone using Tapatalk
  3. I'm speechless, looking forward to seeing the completed project.
  4. Whilst I await the mirrors from Astroboot, - which may be a while.... I've got a section of 8" pipe too short for an OTA but I'll knock something together in a strut design. I'm aiming to keep it simple. I'm unsure whether to make a dobsonian mount or a pipe mount.... Sent from my iPhone using Tapatalk
  5. A good read. I think the secondary in the 130mm was oversized due to it being a faster f-ratio. In theory the secondary only needs to be 4mm bigger... I did see a 40mm secondary on astroboot, but I'm trying to keep my costs down. I'm a quick look at the moon and planets guy anyhow.... Heck I'm making do with a 76mm f4 firstscope at the moment. Thats ok for the moon but struggles with anything else.
  6. Well I've brought a secondary mirror of astroboot for £8. Some might call me foolish as it's for a 130mm rather than a 150. However it's a slower scope and will only get used for planetary viewing. Hopefully coupled with a low profile focuser I'll get away with it.....
  7. Thanks Ajohn, they have had one or two good deals on mirrors this last week. I was very tempted by a 10" mirror for £80. However, I have a strict budget and I'd like to put the whole scope together from bits and pieces for under £50. Thats a challenge I know. A few years back I lashed up a 3" f10 in a off-cut of waste pipe and used a plumbing fitting for a focuser. It gave surprisingly good views of the moon. I'd like this time to be more professional and try to make something like this....https://stellafane.org/tm/tg/kinn/kinn.html
  8. I've just brought a 150mm primary mirror on astroboot for £24. I sold my previous VIxen 90mm f11 last month. I have a couple of questions, - The Vixen gave excellent planetary views, - can I expect the same with a 6" f8 mirror? How big does my secondary have to be? Is it critical, or can I use an old one from a 114mm reflector? Many thanks, wish me luck!
  9. I've just got a firstscope for £20. What a nice little grab and go setup. Good looking too. I'm not so sure that it will give the stunning views it promises, but it should give some nice low power widefield views. By the way I covered the ota in white vinyl, it makes it easier to see in the dark, a black ota is a trip hazard in my own opinion. Sorry I can't rotate the photos!
  10. There is a German company that makes leatherette for cameras and binoculars, it's available in many different colours. The name escapes me, but I'll post any more details if I can find them. Don't use tape or such, vintage binoculars with good optics are increasing in value. I have quite a few pairs, as I don't like modern roof prisms.
  11. Typo! - the thread title ought to read " Has anybody built a binoscope?" I can't seem to edit it!
  12. I've just read this intresting article about a diy bino scope. It appears that it could be built rather cheaply from refractors and binoculars. Im thinking of two cheap department store refractors, and I have lots of binoculars, and prism bodies.... http://davetrott.com/oversize-binoculars/big-binoculars/ Please post any photos homemade or commercial, but preferably DIY!
  13. I collimated mine with a laser collimater and adjusted the secondary mirror. I got it pretty close. It was perfect for quick moon spotting.
  14. I'd second the idea of a secondhand scope. I got my Vixen custom 90 f12 for £70 secondhand complete with mount. For planetary use it could compete with a dobsonian 2 or three times it's size. But that's just my opinion. Refractors are maintenance free, and give better contrast. Reflectors give more aperture for your money so it evens out really!
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