Re: [APML] guide scopes

["bert katzung" <katzung1@home.com>]

Hi Sean:
I'm using the A-P 80x900 and I'm very happy with it. Got it with the rings
that A-P supplies and the setscrews ride in a grooved ring that fits tightly
on the OTA. This allows you to loosen one or even two setscrews without the
whole thing sliding back on you. Focuser is solid and has a good lock-down.
One caution: the diagonal that comes with it is not collimated, so use
straight-through viewing to center your guide star.
Bert

Bert Katzung
katzung1@home.com
www.astronomy-images.com

----- Original Message -----
From: "Sean Houghton" <sean@astronerd.net>
To: <astro-photo@seds.org>
Sent: Monday, 28 May, 2001 10:29 PM
Subject: [APML] guide scopes


> I need (well maybe just want, no, need is the word!) to buy a new
> guidescope.  The one I currently use doesn't have enough focal length and
> the focuser is sloppy, has lots of flexure, and it is very difficult to
> adjust the focus in general.
>
> I have been looking at the AP 80x900mm  guidescope, but it's a bit pricey.
> However, I would much rather pay for quality up front - AstroPhysics has
an
> excellent reputation for quality - than have to rebuild what I buy because
> it won't work right out of the box.
>
> My requirements are:
> - somewhere around 800mm focal length and either 60mm or 80mm aperture
> - very rigid, especially the focuser (must have a focus lock)
> - achromatic (no need for apo)
>
> Does anyone have a great guidescope that they want to share their opinion
> about?
>
> Thanks,
>
> Sean Houghton
> www.astronerd.net
> San Diego, Ca



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