Re: [APML] S-tupifying T-axing V-ague

["warren and amy keller" <warhen@mindspring.com>]

Hi Tom,

            Let me clarify, you are cal. at 2x but you are switching to .5x for guiding, correct? I have the e plugged in as 10cm f.l./ 2.5cm aperture/ refractor, you? What are your average errors like, and what focal length and duration have you achieved?

 

Thanks Tom,

                   Warren

----- Original Message -----

From: Tom Diana

To: astro-photo@seds.org

Sent: Tuesday, February 27, 2001 9:11 AM

Subject: Re: [APML] S-tupifying T-axing V-ague

Glad to hear of your breakthrough with the STV.  I am using the eFinder more often lately and am getting good results, using Auto Calibration @2x on my G11.  I had occasionally seen a No Move but attributed this to poor balancing (and -5F temp) because this did not occur when I shifted the scope to the other side of the mount.  I tried other calibration and guiding speeds but get lower guiding error at 2x.

 

If you are still getting some No Move messages with a calibration time of 15 seconds, something is amiss.  I would expect to see movements of 8-20 pixels with a 10 sec. calibration time.  What values are you using for focal length and aperture in the Setup mode?  I have noticed that my unit will default to inches even after I set the values in cm.  I need to reset it each time I power up the STV.

 

Anyway, I wish you continued success.

 

Tom

 

 

-----Original Message-----
From: warren and amy keller <warhen@mindspring.com>
To: apml <astro-photo@seds.org>
Date: Tuesday, February 27, 2001 4:38 AM
Subject: [APML] S-tupifying T-axing V-ague

To John K, other STVers and eFinderites,

                                                            Though it doesn't seem as if we've identified any consistent and common parameters yet, I thought I'd pass along an evening of testing's results. I won't say anything about the hour and a half drive or the clouds that rolled in within an hour of setting up!!

 

For my eFinder/GM8 setup, it seems completely inconsequential whether calibrating at 2x or .5x. As I'd reported, I'd gotten 'Error: Star Field'  75% of the time upon auto calibration.

 

Tonight looked like a major breakthrough. A long calibration time of 15 seconds in 'Full Menu' yielded success nearly every time. (An occasional 'No Move' was seen?) The exposure was also cranked to 5 seconds, but this was probably the clouds' fault.

 

Maybe next month I can even take a photo!

 

WK