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Subject: Re: [M]: OAG, 201XT, and LX-50's
From: Ric L Ecker
Reply To: mapug@shore.net
Date: Sun Feb 01 22:33:59 1998
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writes:
>After just returning from a great astronomy vacation in Arizona, I
>have
>a couple of questions maybe someone can answer for me.
>
>First off, I have a Lumicon Cassegrain Easy Guider, Pictor 201XT, and
>an
>8" LX50. I tried to use my OAG with my Pictor 201XT unsucessfully (I
>feel I had a bright enough guide star). The 201 works great guiding
>through the scope itself instead of the OAG. My problem is
>callibrating
>when I use the OAG with the 201. I keep losing the star during
>callibration. If anyone has done this sucessfully, can you tell me
>what
>right ascension and declination settings you are using for
>callibrating.
>
>Thank's in advance!
>Rick Keil
>"Holy Kleenex, Batman! It was right under our nose and we blew it!" -
>Batman (1966)
The problem you are having is the calibration is moving the star off
the prism. An easy trick is to use a eyepiece diagonal and calibrate the
201 through the main tube. Basically you only need to calibrate once in
this configuration for most of your guiding unless your are taking
pictures around or near polaris. The 201 will now be setup for your OAG.
ric
curator of the Willard Observatory
San Marcos, California
216 xt images at:
http://members.aol.com/rlecker/optas.html
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