this full moon to normal http://www.bbc.co.uk/programmes/galleries/p019j4jw Carpe Noctem Bill McLean

With all due respect to the knowledge and experience of Mark Ost: If you are sure it is just dust, air is fine. If there is a chance that the stuff on the mirror is pollen, I would strongly

Yeah, salt-laden air and sand from the oceanfront are bad on optics, and should be cleaned off. George George Reynolds "Solar System Ambassador" for South Hampton Roads, Virginia Back Bay Amateur

Actually, I'm looking forward to a mirror and optics cleaning workshop. This could be really useful. ~Roy Ehmke

you won't see any difference unless it is really cruddy From: LeighAnne <lalagoe@...> To: backbayastro@... Sent: Thursday, June 20, 2013 12:59 PM Subject: [backbayastro] Re: Swiffer my

I soft camel hair brush will also work fine after the air From: LeighAnne <lalagoe@...> To: backbayastro@... Sent: Thursday, June 20, 2013 11:08 AM Subject: [backbayastro] Swiffer my

The best way is with compressed air. Now if it requires cleaning that is something different. Not hard but if ti comes to that I can tell you how to do it more or less easily. From:

Oh gee...now that's a somewhat controversial question in the amateur astronomer community! Around the time when I joined the BBAA this was one of my first questions to this forum, and I learned that

Paul wrote: "maybe we could even turn it into a workshop where everyone could learn the proper way to clean a mirror." That sounds like a good idea! If we can schedule such a workshop, I'll

That's right, Leigh Anne. There is no need to clean your mirror routinely. Only if it gets so dirty or spotted that it is interfering with the views at night should you attempt to wash it. Bill is

I will be there between 7-7:30 PM Thursday. Kent Blackwell

I will be there. Save me a parking space. Fair Warning: I am bringing the twins! We will have only their 6" scope; not enough room in the Camry for mine, too. If I could get a parking spot on th

Jim, I think we have the beginnings of a dirty mirror contest or AL program. Carpe Noctem Bill McLean From: Jim Tallman To: backbayastro@... Sent: Thursday, June 20, 2013 1:37 PM

Actually I think Courtney is the winner for dirtiest mirror. Jim

I've had my telescope for less than 3 years. Today, I noticed some specks of dust/dirt on it and got very concerned that I'd have to take it apart. I haven't noticed a difference in optics at all

You're right to be scared. Better to let it get crummy and do cleaning less often. Typically, you can't tell the difference in telescope performance, and the coating will last longer that way. When

Unless your primary is really dusty/dirty it does significantly reduce the views from your scope. Best advice is clean only when necessary, and protect (dust caps) when not in use. Dusting can be

That is good!-Isn't there a Swiffer for primary mirrors? HA! Unless it's real bad I can't tell a clean from a dirty by use. George has the dirtiest mirror in the club and I defy anyone to see a

LeighAnne, How long have you had your XT8 and how dirty is it? I have had mine for 4 yrs and have not cleaned it. You'll find varied opinions on cleaning, with some cleaning each year and others,

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