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argonaut

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About argonaut

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  1. Hi Jonathan, You just need a standard push fit 1.25" diagonal. Leave the 1.25" adapter in place and just fit the 1.25" diagonal and then hey presto you're in the focus range. You don't need a screw fit diagonal. Of course you can use the SCT- 2"" adapter with a 2" diagonal and 1.25" eyepiece adapter. Clear Skies, Glen. Lyra Optic.
  2. I agree with what Ant and Merlin66 say about the little problems your having with the OTA. The rotatable focuser uses 3 equi-spaced nylon tipped screws for placement. Just remove the rotating part and check that the nylon tips are still in place. I did have one OTA where the nylon tip had come off causing the screw to marl the inner ring which it rotates on which can cause roughness in the rotating part. Just a couple of more points then I'll shut up. The threads on the cell and dew shield are quite fine and you need to treat them with care. I use Baader Wonder Fluid when necessary after blowing off all the grit and any other course but small particles. If I can be of any more help please don't hesitate to get in touch. Kind Regards, Glen, Lyra Optic.
  3. I agree with John that the 4mm UWAN(excellent eyepiece BTW) is a little bit much for the 4" F/11. Although for perfect nights it may surprise you if you can wait long enough for a perfect night. This is the UK. I think you will find that the 7mm UWAN is closer to 7.8mm. I liked the UWAN's when I owned them but I went with ES 82° which I found have a more neutral tone. Glen.
  4. Ooops! double post. How do I remove one of them? Glen.
  5. Sorry for the late reply as I don't usually use SGL. If you grip firmly the Black ring of the dew shield and turn the White part of the dew shield counter-clockwise you will then be able to access the cell. You can then unscrew the lens cell from the tube. Just a word of warning,the threads are quite fine and you need to be careful with them. You will also notice the 3 sets of screws on the countercell which are collimation and tilt screws. If you need any more help please don't hesitate to get in touch. Clear Skies. Glen. Lyra Optic.
  6. Sorry for the late reply as I don't usually use SGL. If you grip firmly the Black ring of the dew shield and turn the White part of the dew shield counter-clockwise you will then be able to access the cell. You can then unscrew the lens cell from the tube. Just a word of warning,the threads are quite fine and you need to be careful with them. You will also notice the 3 sets of screws on the countercell which are collimation and tilt screws. If you need any more help please don't hesitate to get in touch. Clear Skies. Glen. Lyra Optic.
  7. There is no bracket incorporated into the focuser. However there is a M5 nylon grub screw on the top left which can be removed to attach a bracket.This is very near the 360° lock screw for rotating the focuser. EDIT: I've had no slippage problems with any of the focusers that I've had. A 2" diagonal and a 28mm UWAN wouldn't budge it. Of course each focuser is different.
  8. This is a very underrated focuser for some reason. I have used quite a few of these and I have never had any trouble with them. My better half smashed one against a wall once. It was easy to strip and rebuild to a buttery smooth motion. They have a 96mm flange with three equi spaced M4 holes. For some reason people seem to strip them off and buy focusers that are twice the price A very good focuser.
  9. argonaut

    Flocking

    I have just moved away from the self adhesive Protostar and started using the thinner flocking board. It's so much easier. The sheet does not roll away if you butt joint it and don't overlap it. It takes a little more time to do but well worth it. I 've just used it on refractor tubes from 150mm down to 90mm,no problems. I even used it on a Baader Skysurfer III to stop reflections. That was around 30mm ID. If anyone is stuck for some I have 3 rolls of the adhesive backed stuff. BTW,the flocking board is so good that I don't baffle tubes any longer. The contrast is excellent.
  10. Being honest with you I'm going to be building these to sell(not sure if I can mention that) I have decided that I can't stop ATMing so I thought I would put it to use. That way I can have full control over everything. I don't have a lathe myself but a little jobbing shop in the village where I live(Newhey,Rochdale.Not Rochester) gives a good service. I just draw out what I need,purchase the aluminium and Mark does a fine job. Of course these will be polished aluminium OTA's,lots of hard work I'm not going for the 60mm though. Your Carton will be single coated. Glen.
  11. The Cartons will be my next project after the 6" f/8 achro that I'm on with. In fact the order is going in today. Glen.
  12. I think it is. New people to the hobby(sorry for saying it's a hobby) may not see the difference. I think coatings are also important. I prefer single coatings on long focal length refractors,and eyepieces come to that. Although coatings sure have moved on this past few years. Glen.
  13. I think the final polish on this focal length is important. This is my opinion of course,others would disagree. Glen.
  14. With being a retailer myself I don't post much on SGL but I must agree with Dave(f15rules). I'm not sure if some people realise the cost of building 'heirloom' scopes. Are long focus achromat lens system cheap to manufacture? That would depend on the quality of the objective. Hand finished optics will always cost more.The quality of the material used for the tube,the accurate machining and a very good focuser.There are cheaper achromats about that can be had for much less money,we know this. Richard is a perfectionist and his 4" f/15 was a very brave move into a unstable market. I don't have any business interest with Richard,just in case someone thought I may have. John,I hope you don't mind me saying that your statement was a little unfair. Who would be impressed with the views with a uncollimated scope.We all value your views,but keep it fair. Not sure if I'm allowed to say but... The 4" f/11 proved to be a little more popular than I thought and the next batch is some time off. Also,there will be a price rise. Not a significant one,but a rise all the same. Kind Regards. Glen.
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