Cleaning newtonian mirrors?

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lotsafruit
Posts: 38
Joined: Mon Sep 03, 2012 10:27 am

Cleaning newtonian mirrors?

Post by lotsafruit » Thu Jun 04, 2015 9:39 am

Hi everyone,

Been a while since i looked through my telescope, but coming back again with renewed interest due to raspberry pi :)

Anyway, going to start cleaning the mirrors as they not only look dusty but also mouldy...Did a search and found some instructions on internet.

Basically I am going
1. flush with warm water using showerhead
2. soak with some diluted mama lemon or similar liquid detergent
3. Lightly wipe with wet surgical cotton (although i saw a vid of person using hands??)
4. Flush with water and then distilled water before left to dry

If anyone else has any experiences to share that would be great, otherwise wish me luck!

Cheers,
KahWai
Cheers
Kah Wai
Owner of bino + C6 150mm f5 newt + 2kids

kochu
Posts: 801
Joined: Tue Sep 30, 2003 9:51 pm
Favourite scope: Sharpstar-107PH Triplet.
Location: Jurong West

Re: Cleaning newtonian mirrors?

Post by kochu » Thu Jun 04, 2015 9:53 am

Yes I have done it in the same way. I will post the photos soon.
Kochu/4-6-15

kochu
Posts: 801
Joined: Tue Sep 30, 2003 9:51 pm
Favourite scope: Sharpstar-107PH Triplet.
Location: Jurong West

Re: Cleaning newtonian mirrors?

Post by kochu » Fri Jun 05, 2015 9:46 am

Photos of GSO Mirror before and after cleaning.
Kochu/5-6-15
Image

]Image

Image

lotsafruit
Posts: 38
Joined: Mon Sep 03, 2012 10:27 am

Re: Cleaning newtonian mirrors?

Post by lotsafruit » Sat Jun 06, 2015 8:41 am

Wow, very clean, can't wait to do mine :)
Cheers
Kah Wai
Owner of bino + C6 150mm f5 newt + 2kids

mrthomasyip
Posts: 43
Joined: Thu May 22, 2014 9:10 am
Favourite scope: 12" london bridge

Re: Cleaning newtonian mirrors?

Post by mrthomasyip » Sat Jun 06, 2015 12:38 pm

Yes kochu is right, just remove the mirror from the primary mirror cell and let runnimg water to flow through the mirror. Use mama lemon, must be mama brand, hehehe(joking). If possible get a serilised cotton bud to gently wipe on the mirror surface. I have been doing the sAME many many times on my 12" dobsonian too.

Don't worry if the mirror get spoil or anything, if your mirror is not any angmo brand or above 10", it is still pretty cheap to get it replace.
The Belief of Thomasology.

lotsafruit
Posts: 38
Joined: Mon Sep 03, 2012 10:27 am

Re: Cleaning newtonian mirrors?

Post by lotsafruit » Mon Jun 08, 2015 10:18 am

Thanks for all the tips, knowing that you guys have done, is the best assurance!
Cheers
Kah Wai
Owner of bino + C6 150mm f5 newt + 2kids

lotsafruit
Posts: 38
Joined: Mon Sep 03, 2012 10:27 am

Re: Cleaning newtonian mirrors?

Post by lotsafruit » Sun Jun 28, 2015 5:54 pm

Finally cleaned it just now, looks a lot cleaner now, seems brighter too :) mirror was smaller than expected, which made it easier to handle just as well.

Used half bottle of ntuc life distilled water and half pack of cotton balls from guardian. Couple of drops of joy dishwashing liquid, in fact quite a few drops more as I tried to remove some dirt on mirror.

Interesting experience, also got to understand my newtonian better while dismantling it.
Cheers
Kah Wai
Owner of bino + C6 150mm f5 newt + 2kids

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