Hi, I have a problem with the motor LXDs 55, I want to adapt them on the fitting Losmandy GM8. Can someone recommend me how to do? I have intention to use the...
I think you want the RoboScope group. http://groups.yahoo.com/group/RoboScope "My advice is free and worth every penny!" -Christopher Erickson Network Design...
Beginning yesterday, a potentially harmful virus is being spread via email spoof attacks. These emails appear to be from official Yahoo group moderators due to...
... spoof attacks. These emails appear to be from official ... in the body of the email describes account suspension ... zip file attachment with a virus...
A new Astronomy Online group has been formed & is alive & growing. 144 members in 7 days! It has been reformed & is moderated by some caring & seasoned...
Hi all, forgive my lack of knowledge, but I'm interested in making a Newtonian telescope and need advice as to the minimum primary mirror size and the foacal...
... a ... mirror ... Jeffrey Mein I think that an 8" is a nice compromise,the mirror won,t cost you an arm and a leg,if you can spend a bit more and are...
I'm considering buying a used 14.5" Starmaster Compact I scope. The asking price is $2000. This truss tube dobsonian has a somewhat unusual design. The are...
Greetings: I can't help you with the design, but I had a 15" SM (the only 15" model made). I bought it for around ~$3,000 and sold it for $3,500. It was...
I am new to the group, but not that new to astronomy and I'm having trouble deciding on my next scope. I have narrowed the search to a newtonian with...
I have been at NEAF or I would have given you an answer sooner! Sorry about that. Anyway, A Zambuto mirror is considered the ultimate and they are renowned for...
Helix Manufacturing (authorized University Optics dealer) is having an overstock sale on 5,6,7 and 9mm orthos. 10% on the 5,6,9mm and 15% on the 7mm. I have no...
I just found this group a few minutes ago or I would have answered sooner. I am a huge fan of Orion telescopes. I own three of them. The first one I bought...
... <meinja@i...> ... making ... comfortable ... Hello everyone, I only just subscribed to this forum, so I think I should introduce myself. My name's Carlos...
Hi group, Is there anybody out there imaging with a focal reducer that you are happy with? I mean, no field curvature and no significant distortion? I have an...
Currently I am experimenting with a Denkmeier Powersweeper, which is a focal reducer intended for their Binoviewers. It seems to work quite well for my...
I don't have one for you but if your quest fails, I might be able to machine one for you if I knew its mechanical dimensions. And have you tried an Astromart...
Hello Group Well it has been a busy summer of work so I had to reactivate my membership so I hope all this works. When I was observing the other night with my...
Coming and going sounds like upper atmospheric turbulence. Were the stars twinkling when you looked them with the naked eye? "My advice is free and worth...
Hi group, I noticed while collimating my scope that occasionally, not all the time, there is a very slight flattening of only the outermost diffraction ring on...
I think your idea of enchroachment is good. Doesn't sound like a mirror figure problem, if it only is seen in the outer ring. Could your eyepiece tube be ...
Could it be the bottom of your focuser protruding into the mirror path? That would mean that according to the back focus of each of your eyepieces, sometimes...
Definitely not the focuser. Perhaps thermal. I do have the scope in a dome and perhaps it takes longer for stabilization than I realize. I open the dome a few...
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