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Old 11-04-2020, 05:26 PM
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graham.hobart (Graham stevens)
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cleaning a C9.25 XLT

after just selling my almost brand new 9.25, my colleague at works says he has one that needs a temporary home whilst he is rebuilding his house- it came like this....
I cleaned a C 8 before but would love extra tips to make my life easier if anyone has any pro tips- it's a reet mess-he has a small kid so I wonder about child vomit but it seems to be on the inside of the schmidt plate.
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Old 11-04-2020, 05:30 PM
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Camelopardalis (Dunk)
Drifting from the pole

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Old 11-04-2020, 05:38 PM
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h0ughy (David)
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Oh my, bintel wonder solution will only go so far. Wash with distilled water but I think the acid from the vomit will have already etched the corrector plate
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Old 11-04-2020, 05:49 PM
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Merlin66 (Ken)
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Hmmmm
I hope there’s no spread of the sh!t to the mirror....
Otherwise the usual, mark the corrector, remove and give it a good soak in soapy water wipe with care and rinse in distilled water....reassemble.
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Old 11-04-2020, 06:03 PM
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graham.hobart (Graham stevens)
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C9.25

I would hope its not vomit as it was stored outside then apparently blew over (!!!!) sure looks manky though- I will give it a good go with soapy water and cotton balls.
My cleaning of a C 8 a few months ago worked well
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Old 11-04-2020, 06:10 PM
PaulSthcoast (Paul)
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Hi Graham.

It might be me,

but it looks like regurgitated chocolate.

Milky Way perhaps ?


Paul.
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Old 11-04-2020, 08:42 PM
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Sunfish (Ray)
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Willy Koorts is the SCT cleaning master
Check his YouTube from the observatory .

https://youtu.be/e66yIuD3cMk

Also his you tube on vacuum depositing aluminium on a mirror is excellent.

Last edited by Sunfish; 11-04-2020 at 08:43 PM. Reason: Spelling
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Old 12-04-2020, 06:03 PM
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graham.hobart (Graham stevens)
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Quote:
Originally Posted by PaulSthcoast View Post
Hi Graham.

It might be me,

but it looks like regurgitated chocolate.

Milky Way perhaps ?


Paul.
\

this made me laugh!!!
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Old 12-04-2020, 06:06 PM
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graham.hobart (Graham stevens)
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cleaning

Hi Ray thanks for the link- looks good. Just need time and a place to take it to bits and keep it away from my easter egged up kids!!
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Old 12-04-2020, 07:11 PM
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graham.hobart (Graham stevens)
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cleaning a C9.25

Additionally the counterweight bar security nut is missing- the bit that stops the counterweights from dropping on your foot? Anyone know the screw size or an Aussie dealer I can get a replacement? ADM do a bar and new rosette alternate kit but that seems a bit extreme
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Old 20-04-2020, 11:49 AM
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I used these instructions for mine - it works really well!

I don't have the Kodak PhotoFlo solution, but I followed the instructions for everything else and it did a great job.

https://www.astrodog.com.au/fine-opt...-instructions/

Good luck, Andrew.
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Old 20-04-2020, 02:38 PM
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graham.hobart (Graham stevens)
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C9.25 cleaning

first round of cleaning ....
I used a solution of distilled water with detergent and some acetone- came out better than expected, I then dabbed the inside with some acetone but that seemed to take the black paint off, so I used careful tea tree oil to discourage mould/fungi. I then re-assembled and the last pic is a screen shot of a road sign 2.3 km away across the valley, seems ok collimation wise. Need a star check but weather really crummy currently. Would love to give it a blast on the planets.
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