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Subject: Re: Outgassing
From: Rob Roy
Reply To: mapug@shore.net
Date: Sat Jun 10 03:41:03 1995
>On Fri, 9 Jun 1995, Rob Roy wrote:
>
>> Did we ever get an answer about this problem?
>> If the inside of the corrector plate was fogged, then so were the primary
>> and secondary, no? If that were the case, how on earth would you get the
>> primary out to clean it?
>>Rob Roy
>
>After you get over being intimidated by the prospect of yanking out the
>primary it's fairly straightworward (I've done this on my C-11 OTA). You
>first disassemble the focuser
>knob; threaded nut-bearing gizmo etc.
>>>>>>
>causing you to loose a little photon power, it IMHO is probably not worth
>the hassle to clean that stuff.
((((((((((((The corrector however is see-through
>stuff which can cause nastyness to appear.))))))))))))))
>Regards,
>Jim Eiselt
>
>
Thanks Jim,
I don't have this problem, but I was very curious. I think I was born
crying WHY instead of WAA. I will put this great set of instructions away
in a safe place just in case some day.
Your post leads me to even more curiousity, however. I took the liberty of
multibracketing your last sentence. Funilly enough, Scott R. typed me, on
the side, and said the exact same thing. I don't understand why a film only
on the c-plate would have an effect.
Assuming the film is on all three internal surfaces, the cute little photons
have to go through it 5 times! Once through the corrector plate, through
to the primary mirror and back out again and the same with the secondary.
How do they know only to make a fuss when going through the c-plate? What
happens the other four times and why don't they cause "nastiness" to appear?
I hope this isn't terribly obvious and I missed it.
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Rob Roy a5817394@mcmail2.cis.mcmaster.ca
Maker of LX200 Joysticks
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