RE: [APML] Pictor 201XT autoguider

["Nikolidakis George" <ginik@ote.gr>]

Hi Alan 
Yes from my experience you are right 
When I have longer exposure times about 8 to 12 sec
The tracking is better and the guiding corrections
have a flat behavior.
But don't forget that our telescopes have
a pretty good PEC. 
Alan I missed your post about RA and DEC time movement.
It will be very kind if you can send me private.
George
 
 

-----Original Message-----
From: Alan Voetsch [mailto:critter12952@yahoo.com] 
Sent: Tuesday, November 26, 2002 6:21 PM
To: astro-photo@seds.org
Subject: RE: [APML] Pictor 201XT autoguider

Hi George,

--- Nikolidakis George <ginik@ote.gr> wrote:
> I think this subject with 201 is again on fire...!!!

Not on fire, just a discussion, remain calm. :-)

> the question is that is the
> mount capable to track the 15 sec unguided ?. 

I've always used my guiders off axis at prime focus.
Currently on a 12" LX, the same scope you use, right?
A weird thing I've noticed is that typically the
guiding is more accurate when I use longer exposure
times on the the 201, or 208. Fifteen second
integrations almost always come out better than 3
seconds integrations. That helps as far as star
brightness is concerned. Also, did you happen to see
the my post to mapug a couple weeks ago? the one about
user-set RA and DEC movement times? That might be a
big key to getting these things to guide really well.

> So I insist that is better to go with 208 XT. 

In theory I'd agree with you. I'm just not so sure
that the 208 is that much more effective than the 201.
Give it a try.

Alan


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