Hi, Just make sure you didn't get "flexible collodion" which has mineral oil included. The solvents in collodion are diethyl ether and usually methanol. ...
... OK, I'll admit it. I'm totally baffled as to why anyone would use a substance so obviously dangerous for a simple task like cleaning optics, which can...
... Be careful of using acetone. The everyday stuff you can buy at the hardware store often has oily contamination. Not much, but it doesn't take much. - Mike...
... Excellent advice. Many fine mirrors have been ruined because of a little dust which had no effect on performance. But the cleaning certainly did! ... ...
Thank you all for replies. I have to mention few things. The collodion cleaning method; I found it on the net, and from a certain perspective looked like it is...
In a message dated 3/1/2003 9:05:56 AM Eastern Standard Time, ... I use collodion on a regular basis in my photographic applications and find it as safe or...
TT Policy Statement (Revised February 23, 2003) As a reminder of this group's desire to encourage all of its members to participate in a friendly and informed...
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Mar 1, 2003 4:17 pm
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... Yes and no. There's also the rule: Aperture wins! Comparing three scopes of equal aperture and quality, the refractor will win. But when you consider...
... Ayup, the most accurate way to say this then would be "Money still Rules". A refractor large enough to beat an MN61 or the like it would cost you an...
Placed and order in January... charge appeared on my acct but still no merchandise. They don't answer email, and the phone # is a recording machine. Are they...
It is reported to be a very non-evasive way to clean your mirror. It is also reported to be a highly effective way to clean. I have used the water and soap...
... a substance ... which can easily ... Astronomer's Guide, ... I will break my long silence to comment on this issue. A little distilled water combined with...
I just received my 2" UltraBlock filter today. Weather will delay its use, but for now I'd like to share the test report data that shipped with the filter. ...
. I've tried it twice and both times the process ... acetone. If it leaves residue, your back to square one. Also call the fire dept. ask them to let you...
... Maybe you know the answer to this one, Vern. I'm a fan of this method, but the strange thing about the recipes for this manner os cleaning that I've seen...
There is no dilution with this method. You put the mirror in a cleaned sink on a clean towel under a stream of Luke warm water to loosen the dust and grim. do...
I have had the same experience. I ordered something Jan. 17, my credit card was charged the next day. After several calls and several emails, I finally...
Yeah, I got screwed. I bought one back before Christmas......NOW they go on sale. ... its use, but for now I'd like to share the test report data that shipped...
I have had the same experience. I ordered something Jan. 17, my credit card was charged the next day. After several calls and several emails, I finally...
There has been a great deal of discussion regarding the use of collodian to clean antique optics. I don't know if I ever got a straight answer about whether or...
Howdy yall, I have had an ETX-70 for about 3 months now. I am getting pretty good at using it both with and without using the Go-To suystem. Now I am ready to...
... This is a really good plan. I've bought and sold lots of telescopes, but I've gradually built up a collection of eyepieces which I now use with _all_ my ...
Hi Robert and welcome! I apologize in advance if anything I'm saying is "old hat" for you. You might consider replacing your 25 MA with a Televue 24 mm...
