LOL 1st Your right my mistake I've been out of groups awhile with these discussions. I was thinking coma. Abberation is usaully distortion do to pinched optics...
... Very nice, Geoff, he pointed out a few things I had not seen mentioned before, like the effect of seeing on the test. That info combined with something...
Is it possible to see coating or aluminization deterioration by a visual inspection? I ask because I recently acquired an 8" Meade SCT primary about 5-6 years...
I seem to recall photos of a few very high quality larger ones made for university observatories or the like in the 1980s, they did solve the problem of...
... OK, thanks for that, Wayne. Just to bring this back toward something I am doing currently, what difference might I notice between the C8 (2000mm f/10) and...
... Is it accurate to say that the resolution will be nearly identical and the difference in contrast will likely be not noticeable? And will the 6.3 flattener...
Well, I just up loaded a couple of pictures of my scope umder scopertonight. I have the Celestron 150 f8 refracter. A big enough yard cannon to do what I like....
... Very nice, Wayne. I have heard nothing but good things about the Atlas mount, what do you think about it? My shoulder hurts just thinking about moving that...
... I did my shoulder permanent damage lifting my Celestron 150 mm f/8 achromatic refractor up onto my Losmandy G-11 mount. That was what finally decided me...
Umm no, I live in a city. It's better then a few years ago. They ripped out a strip mall, that helped some. But a good amount of light polution. I live 45 deg...
... I live 45 deg north. So its cold in the winter. And have about 50/50 mix of cloudy nights to clear. The one thing I dont like up here in the north. It...
... I discovered that trick a while back. I don't think I would ever have completed the Herschel 400 if I hadn't used "time shifting" to view "winter objects"...
HI, My name is Ron and live near Orlando Florida. Been interested in Astronomy for many years and have read countless books on Astronomy, Classical Physics,...
Hi. My name is Neil, retired pediatrician living in Lakewood CO. Now that I am retired I have pursued a long interest in astronomy and combining that with an...
You may not be aware of current happenings with the Orion Telescopes group. Much as the Orion company have broadened their offerings to include products from...
Well I got away from yahoo astronomy groups 3 years ago came back for a short time and left again over a year ago. I got tired of the political junk in some...
"I would love to know the average AGE and GENDER of members here (derived by statistical means if not offered publicly), generally what GEOGRAPHIC AREAS they...
... And lots of equipment to look over and see what you think might work for you. That's one great thing about these regional star parties, the diversity... ...
I've a question. I have an Orion 6" f/5 imaging reflector #9786, and find it does a good job with a Canon DSLR and MPCC. But the focuser is pretty flimsy. ...
... Chuck, the budget Orion choice would be the Crayford - http://tinyurl.com/oyyoec It will require drilling holes, and enlargement of the hole, it is a 2"....
I am in awe, sir. You seem to have more energy than I, who have barely reached early retirement age. Of course, I may actually have more motivation to do scope...
Hi Neil, An inexpensive way to determine the scope you like best might be to buy used on Cloudy Nights or Astromart. After you find the type that suits you,...
... This is David Cox, from not-so-sunny Jacksonville FL. I'm in my late 50's, and recently picked an old "astro-junk" 8" Orion DSE that I'm rehabbing. I...
For someone wanting to enter into amateur astronomy I would personally like to recommend that they take a look at Orion's 100mm f/6 wide field refractor. Yes...
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