Re: Dobsonian mount - azimuth bearing question

Oh that blackness I have figured out, ever hear of Black Ice? The mirror was
close to the ground which is still very wet from the last rains ( whole
desert is still that way ) and the plastic sheeting had traped the most air
under it and into the ota and onto the mirror ( with fine layer of dust )
and it froze those two nights. I placed the mirror on the font porch after
taking it out and using a small *** of plastic was able to dup what had
happened. While not as dark it did show up.



--

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"Phil Wheeler" <w6tuh-ng7@xxxxxxxxx> wrote in message
news:OW9yf.619$Ou1.299@xxxxxxxxxxxxxxxxxxxxxxx
> Starlord wrote:
>>
>> Right now with the 10 inch dob, I'm started working on old B8, it was
>> showing it's age from the weather and all the car trips it's been on, so
>> it's getting a much needed fix up.
>>
>
> That will make a good project, Dennis; let us know what you conclude about
> the temporary blackness you've seen on the B8 mirror. And some of the
> ideas that have shown up in this tread re bearings might be timely.
>
> Phil


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