Astronomy Site: Meade Advanced Products Users Group Archive: Re: [M]: TPoint LX200 accuracy


 

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Subject: Re: [M]: TPoint LX200 accuracy
From: Bjorn Heijligers
Reply To: mapug@shore.net
Date: Thu Jun 10 14:16:00 1999

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

Hi
I am an astronomer from leiden and
I also have a lx200 on a meade wedge on a permanent pier with a st77 ccd
attached. I am just setting it up, so i dont know the pointing accuracy.
So if I could lend a copy of TPoint from u I could test my system and
report the results back to.

I am just upgrading my homepage so u can take a look at both homepages
if u want:
http://www.strw.leidenuniv.nl/!heyliger/
http://www.strw.leidenuniv.nl/!heyliger/index_old.html

Hope to hear from u soon

Kind regards

Bjorn Heijligers


Marc Castel wrote:
>
> I am using TPoint with my 8"LX200 on the Meade wedge and permanent pier.
> Upon doing a calibration run of 250 stars I end up with a pointing accuracy
> of RMS 72.29 arc min and a population std dev of 74.1 arc sec using 19 terms
> to describe the pointing algorithm. I would like to get a feel for the
> accuracy of other similar systems using TPoint (or other mechanical/software
> pointing systems). My second question is how long an exposure could I take
> without noticible field rotation if my polar alignment is out by 5.4 arc min
> below the pole and 10.3 min to the east of the pole (I'm using a FL of
> 1260mm and ST6)? Is it worth realigning the scope since TPoint corrects for
> position? Is there a quick formula?
>
> Thanks in advance
> Marc Castel

--
---
Bjorn Heijligers Tel: 071-5155793
Rijnsburgerweg 37b 071-5275866 (Work)
2334 BG Leiden Netherlands Room:529
http://strw.leidenuniv.nl/~heyliger
------------------------------------------------------------
Who the hell is General Failure and why is he trying
to read my disk?

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