Re: [M]: OAG, 201XT, and LX-50s
| Subject: | Re: [M]: OAG, 201XT, and LX-50s |
| From: | Rick & Melissa Keil |
| Date: | Mon Feb 02 09:33:46 1998 |
John F. Wall wrote:
>
> Hi Rick
> I have an LX-50, 201XT and the Meade OAG and as of today still havent had
> it working together. In discussions with Meade there are several problems
> involved.
>
> 1. The cable that connects the 201XT to the scope. Meade informs me that
> the cable MUST MUST MUST be the flat grey cable. Any other cable that may
> have come with the 201XT may cause problems. It has now been replaced.
>
> 2. The dec motor over-corrects and the image moves off the chip during
> calibration. Meade is now sending me a new upgraded dec motor and chip
> (rev. 6.0) which will stop this over-correction.
>
> Because of these problems the 201XT would not calibrate at all. Hopefully
> well be up and running in two weeks provided Meades back order on these
> new dec motors gets filled this week.
Have you been able to ust the 201 through the main tube? Mine works
great when I do that. (For more info on my problem, see my other posting
with the same subject line).
>
> That said, try your illuminated reticle in your OAG and see how far your
> guide star moves through the FOV before it disappears. Your FOV may not be
> great enough.
The Lumicon OAG has a very large prism, so the star is able to move all
the way acroos the FOV in all directions. I think my problem might be
Im using a star diagonal in my off axis port in front of the 201 so I
can reach focus. Lumicon sells a longer extension tube so I wont have
to use the diagonal. Maybe that would help. Another thing Ive
contemplated buying is Lumicons 2.5X CCD reducer (reduces to f/4 for an
8" f/10 SCT). It supposedly attaches to the nose of the 201, giving a
better star image for the 201 to guide on.
> I had to tweak my prism to get the max. FOV possible. I
> didnt realize how small it was until I tried moving a star through dec and
> seeing it disapear before it got to the edge of the percieved FOV.
>
> Hope this helps some.
>
> John Wall
Thanks John. I appreciate all input.
Rick Keil
"7/5th of all people do not understand fractions." - unknown
>
> Hi Rick
> I have an LX-50, 201XT and the Meade OAG and as of today still havent had
> it working together. In discussions with Meade there are several problems
> involved.
>
> 1. The cable that connects the 201XT to the scope. Meade informs me that
> the cable MUST MUST MUST be the flat grey cable. Any other cable that may
> have come with the 201XT may cause problems. It has now been replaced.
>
> 2. The dec motor over-corrects and the image moves off the chip during
> calibration. Meade is now sending me a new upgraded dec motor and chip
> (rev. 6.0) which will stop this over-correction.
>
> Because of these problems the 201XT would not calibrate at all. Hopefully
> well be up and running in two weeks provided Meades back order on these
> new dec motors gets filled this week.
Have you been able to ust the 201 through the main tube? Mine works
great when I do that. (For more info on my problem, see my other posting
with the same subject line).
>
> That said, try your illuminated reticle in your OAG and see how far your
> guide star moves through the FOV before it disappears. Your FOV may not be
> great enough.
The Lumicon OAG has a very large prism, so the star is able to move all
the way acroos the FOV in all directions. I think my problem might be
Im using a star diagonal in my off axis port in front of the 201 so I
can reach focus. Lumicon sells a longer extension tube so I wont have
to use the diagonal. Maybe that would help. Another thing Ive
contemplated buying is Lumicons 2.5X CCD reducer (reduces to f/4 for an
8" f/10 SCT). It supposedly attaches to the nose of the 201, giving a
better star image for the 201 to guide on.
> I had to tweak my prism to get the max. FOV possible. I
> didnt realize how small it was until I tried moving a star through dec and
> seeing it disapear before it got to the edge of the percieved FOV.
>
> Hope this helps some.
>
> John Wall
Thanks John. I appreciate all input.
Rick Keil
"7/5th of all people do not understand fractions." - unknown
