... It doesn't take much to affect the figure. The glass is below ambient so the air you are blowing is more than 10 degrees warmer (unless you use the no-heat...
http://longpern.manufacturer.globalsources.com/si/6007000529276/Homepage.htm Their website is at http://www.longperng.com.tw But appears to be down at the...
Greg, I've been getting the nucleus with 80mm. SV NHNG with Hyp 8-24 zoom. 23x-70x. Monday before moon, transparency good (mag5+, milky way clearly visible) in...
I was out last night and saw it for the first time. It is huge! You can't miss it. It is naked eye even in light polluted Los Angeles skies. The view was...
Glad you found it David! It sure is a beaut isn't it? I love it in the binos also. Whenever I am stumped at finding things, my binos are always my biggest...
Last year's discussion of the TMB-designed "Brick" APO's (using no abnormal glasses) sounded very promising, too. ... of ... LESSER ... quite ... retail." ... ...
I've never been able to correlate my binos with a telescope. It's a perception thing to be sure. The closest I can com is getting the directions right. But I...
... Thomas, If all ever depends of my wishes! There are too many factors, which influent on our work. The worst ones are: very frequent unavailability of...
Michelle; A big help in correlating views IMO would be to install a compact red dot sight, properly adjusted, on the binoculars. Surprised nothing like that...
hi folks, after being out of the 'astro-processing-loop' I enjoyed handling my equipment again last night. after upgrading my Starlight Xpress SXV M25C to an...
Long Perng is a major Taiwanese OEM manufacturer of refractors and accessories. Per posts I have seen they manufacture many of the scopes for Astronomy...
... Инструментс", ... IIRC, Aires does the ion beam figuring for these guys: http://www.rcopticalsystems.com/ionmill.html Doubt they need a web site...
Not for me, I can see the core but not the nucleus in the Star Blast. It is possible that there is an optical quality issue here, the Star Blast is not known...
Perhaps it is a contrast issue, the Star Blast being a small reflector and your FS128 being a rather decent refractor. I'll assume the Star Blast's collimation...
If you already have an RDF then Burgess Optical offers their Z bracket combined binoculars tripod mount adapter and RDF finder mount for binoculars. ...
... And what? Clive, we have nothing to do with TMB and Burgess. We also do have our own manufacturing capacities and possibilities to develop necessary...
Valery; I tried to answer your query regarding your member status twice but the Yahoo Mailer Demon insists that the email address you are sending from is not a...
Just had my 10" DOB pointed at Holmes with a cheap 25mm plossl. I spent the day cleaning the garage and rearranging my equipment for better access, the 10"...
I have a pair of Fujinon 16x70 binos that are truly outstanding for astronomy. When I have the patience to mount them up on a parallel mount, I do put a red...
Dear Valery. Chromacor at $1200? Yes, it is very expensive; I think I would better buy good 4 inches triplet APO at $1000-2000 price. The problems which you...
If any of you have figured a mirror or lens you know how just touching the glass for a moment makes a huge and very visible bump on the figure where the heat...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Refractors group. File :...
Refractors@yahoogroup...
Nov 2, 2007 2:18 am
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I was able to squeeze a photo of comet Holmes in between the clouds tonight in my last-rate Orion 120 f/8 achromat. Using eyepiece projection into digital...
Well fortunately a hair dryer has much less heat than a heat gun, and I have an air spaced doublet not an oil spaced triplet. Nonetheless I guess it would be...
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