RE: [APML] STV or ST7E for guiding?...

["Thom Iwancio" <tiwancio@sc.rr.com>]

Jeff,
	Personally, if I had the $, I would buy the ST-7 and lug the
computer in favor over the STV.  Not only will you have a great guiding
tool but you will be amazed by the CCD images you will undoubtedly take.
Trust me as a dyed in the wool film guy, you will find it hard to resist
imaging with the CCD every now and then, especially when the moon is
bright.  I only have a ST-5C and still find myself succumbing to the
instant gratification every once in a while.   I think here the ST-7
would have a big advantage.

Just my 2 cents worth.

Thom Iwancio
Elgin, SC

www.machunter.org
www.elginphoto.com

-----Original Message-----
From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org]
On Behalf Of Jeff Crilly
Sent: Wednesday, May 05, 2004 8:53 PM
To: Discussion of Film Astrophotography
Subject: [APML] STV or ST7E for guiding?...

I've been autoguiding my film exposures w/ a ST7E + CCDOPS using
an 80mm f11 for a guidescope.  The film imaging scope is 106 f5 (530mm
FL).

My plan has been to replace the 80mm f11 w/ a short guidescope and
continue to use the ST7E.

I'm wondering if the STV + E-finder would be a better performer.

The ST7E is a bit big/heavy and does require the power sucking
laptop running ccdops.  Also, the initial autoguide calibrate is
lengthy with the 20second full frame downloads... plus it seems
like ccdops always picks a star near the FOV edge, resulting in the
need to repoint the OTAs for calibration.

Any comments?  Is the STV really painless?

Btw, the mount is a G11.

thanks

jeff

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