Astronomy Site: Meade Advanced Products Users Group Archive: [M]: 201XT guiding square

 
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Subject: [M]: 201XT guiding square
From: Paulo Cacella
Reply To: mapug@shore.net
Date: Mon May 07 03:53:19 2001

While you're here, how about checking out the Astronomy Book List ?



Anyone knows about 201XT algorithm ?

My doubt is related with the square size 201XT uses for guiding. For
example : With a horizontal FOV of 10 arc min each pixel have a size of
about 10/336= 1.79 arcsec. To 201XT lose the star I suppose that it is
outside a square that is inside the chip (For example a square of 20x20
pixels). If this is the case then if scope drifts away more than 20*1.79 =
35.9 arcsec then 201XT lost the star.

Is this the case ?

I am making a spreadsheet to calculate calibration values and to chacke the
longest Focal Lenght that a drive can support, knowing speed of periodical
error.


I suppose I have some calibration issues with 201XT. Drive of LX50 isnīt
good but it is impossible that it cannot guide a 400mm F/L with a 201XT...

Thanks.


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