demineralised water for cleaning telescope mirrors

icytailmark (Mark) · #1 25-09-2010, 03:51 PM

is it ok to clean telescope mirrors with demineralised water? i could not find any distilled water in any supermarkets.

multiweb (Marc) · #2 25-09-2010, 04:16 PM

Quote:

Originally Posted by icytailmark

is it ok to clean telescope mirrors with demineralised water? i could not find any distilled water in any supermarkets.

Bunnings. Paint section.

bird (Anthony Wesley) · #3 25-09-2010, 05:31 PM

I've been using demineralised water bought from service stations (I guess meant for use in radiators) for many years to clean mirrors and it works just fine.

cheers Bird

icytailmark (Mark) · #4 25-09-2010, 05:59 PM

just cleaned my 12" mirror for the first time.I put the mirror in the sink with some warm water and a few drops of washing liquid. Let it sit in the water for 5 mins and swished it around a bit. rinsed the mirror with demineralised water.Now the mirror looks brand new again.

multiweb (Marc) · #5 26-09-2010, 04:38 PM

On another note I have found Kimwipes terrific for lenses and mirrors. I bought boxes of the stuff.

space oddity · #6 26-09-2010, 08:54 PM

If you come over, I have a water distiller at work- I can brew up more distilled water than I need. It is brewed up 4 litres at a time. Just bring your bottles.Say 6 litres at a time is on offer to IIS members. Work is at Ashfield, home in Bondi. If you are a member of ASNSW, I can bring some to meetings. Wonder if I should get another distiller for other things

?