Cleaning liquid solution for diagonal

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tanweeho
Posts: 13
Joined: Sun Mar 20, 2016 10:30 pm
Favourite scope: Celestron Nexstar 6SE

Cleaning liquid solution for diagonal

Post by tanweeho »

Hi, apologies if this is not the right section to post.
I have a T-2 Baader diagonal which was spotless when I first bought it. But recently, I notice tiny spots on the surface when viewing against a bright light.
I tried using some cleaning solution which I use on glasses but that didn't work.
Anyone can suggest a good solution?
Thank you.

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Mariner
Posts: 542
Joined: Thu Apr 19, 2012 11:18 pm
Favourite scope: Non as of now
Location: Terra Firma

Re: Cleaning liquid solution for diagonal

Post by Mariner »

Rubbing alcohol/Isopropyl Alcohol. You can get them from shelves at local pharmacies. That and some Q tips or use Zeiss lens paper. Can find them on sale at some Cash Converters. If this doesn't work, use finger and saliva to rub off the spots, followed by the above to wipe clean.

Avoid commercial glass cleaner solutions.
OCULARHOLIC ANONYMOUS!!!
Keep Calm and Carry on Observing.

Hardwarezone
Posts: 273
Joined: Fri May 17, 2013 2:50 am
Favourite scope: maksutov

Re: Cleaning liquid solution for diagonal

Post by Hardwarezone »

Suntan for 10-15 minutes can temporarily halt the growth of fungus before deciding on further actions, but not all equipment suitable ... such as the inner plastic/focuser of refractors ... the secondary on SCT and Newtonians ... they can melt in the focused sunlight.

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