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Subject: Re: [M]: Meade Off Axis Guider
From: Brendan Downs
Reply To: mapug@shore.net
Date: Mon Jun 02 02:40:29 1997

>>Hi All
>>
>>I am using a 12inch LX200, with the Meade f/6.3 focal reducer, the Meade Off
>>Axis Guider and the Meade 9mm Guiding Eyepiece.
>>
>>When looking through the 9mm eye piece, it seems that only part of the 9mm
>>field of view (about 1/4) is getting any star light. Is this normal?
>>
>>Brendan
>>Thunderchild Observatory
>>Ipswich, Queensland, Australia
>>http://gil.ipswichcity.qld.gov.au/~brdowns
>>
>>You need to adjust the prism in the off axis guider to center the secondary
>mirror obstruction in the field of view. It is easier if you do this in the
>daytime. Right now your field is pointing to the inside wall of your
telescope.
>Good luck,
>Bruce

Hi Bruce

I looked at the Off Axis guider under desk top conditions. Looking down the
tube, with no eye piece, only half the prism is getting light, looking from
the scope side, I see half a circle of light coming from the eye piece tube.
The prism is aligned square to the guider sides. It seems like the prism is
to high? I can't se how to adjust the prism.

Brendan
Thunderchild Observatory
Ipswich, Queensland, Australia
http://gil.ipswichcity.qld.gov.au/~brdowns