K-Tec

Cleaning an SCT primary mirror

  • phoenix
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12 years 1 month ago #92718 by phoenix
Replied by phoenix on topic Re: Cleaning an SCT primary mirror

Yea, I've done it before also.
It's amazing how clean the mirror can look after using the powerwasher....


Think I'll take the mirror out then I can safely sand blast it without the risk of the sand getting stuck in the delicate parts of the tube assembly. :whistle:
Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/

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12 years 1 month ago #92719 by michaeloconnell
Replied by michaeloconnell on topic Re: Cleaning an SCT primary mirror
Yea sounds like a plan.
Make sure you are wearing your safety googles, rubber gloves, steel toe-capped boots and hi-vis vest for this delicate operation...

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12 years 1 month ago #92724 by dmcdona
Replied by dmcdona on topic Re: Cleaning an SCT primary mirror
I found that those green cleaning pads (for doing the dishes) were great for getting the stubborn stains off. And a paint stripping gun got it all dried off pronto.

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12 years 1 month ago #92727 by PaulWalsh
Replied by PaulWalsh on topic Re: Cleaning an SCT primary mirror
Is this not too delicate an operation for a power washer. I read somewhere to use an angle grinder with a real fine disc on it.

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12 years 1 month ago - 12 years 1 month ago #92728 by dave_lillis
Replied by dave_lillis on topic Re: Cleaning an SCT primary mirror
haha, you're all nuts, sure everyone knows that you must coat the mirror in wd40 or 3in1 oil if you have it, to give it a protective layer so the oxygen in the air wont oxydize the coatings. :devil:
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
Last edit: 12 years 1 month ago by dave_lillis.

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12 years 1 month ago #92731 by dmcdona
Replied by dmcdona on topic Re: Cleaning an SCT primary mirror
Even better Dave - after spraying on the WD40, I wrap the whole thing in clingfilm - ain't no oxygen getting in there to corrode the tin-foil. Did I mention the tin-foil before?

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