Well, the before erase and after erase look like the same dance to me. I decided to
retrain using autoguide. It's on its merry way now. I did find the track list file in
autoguide/track mode, so I'm recording that too.

Wayne Watson wrote:

> Thanks for your response. I just fired off 96 shots with autoGrab and then ran 48
> of them back via slide show. Left, right, left, right... I can see the stars doing
> a merry dance. I'm wondering if my PEC didn't somehow get erased recently. Well,
> it did now. I erased it and am shooting 96 more in the erased mode. I'll retrain
> later after I make a rough plot.
>
> Your suggestion might work. I don't recall how the track list is made. Autoguide?
> Selfguide? I'll take a look at the manual.
>
> Well, back to the obs. My last 8 minutes should be completed now. This should be
> interesting.
>
>
> > In a message dated 7/19/01 4:44:33 PM Eastern Daylight Time,
> >
> > << Well, I did a lot of shooting last night to try and figure out what's going
> > on. The results are on
> > See <http://home.earthlink.net/~mtnviews/Misc/misc.html> with details.
> >
> > Here's a short run down:
> > 960 second shot near polar region. (16 minutes or two PEC cycles)
> > One 30 second of ten successive shots near polar region (not a trace of
> > snag/jump anywhere)
> > Six successive 30 second shots near M57 (high and near meridian)
> > 120 second exposure on M57
> > Three 30 second shots of LINEAR (mid sky and to the east)
> >
> > It's easy to spot the snag/jump (drag,shift) problems near the meridian and
> > the LINEAR shots.
> > >>
> >
> > Wayne,
> >
> > I can't help but wonder if you were to use the 'create track list' option,
> > then guide on a star for, say, the full 8 minutes of the worm or more, then
> > converting the track list and looking at the resukting graph in Excel, what
> > you might see.
> >
> > I know you've been doing all you can to nail this down, but you know, it just
> > might be that the snag/jump is regular in frequency. It could do a snag/jump
> > every xx seconds, then settle down the rest of the time. If that turned out
> > to be the case, it could account for why it shows up, then is gone, then is
> > back, in short exposure images.
> >
> > Or maybe you already did that and I missed that post.
> >
> > And if it IS at a somewhat regular frequency, that frequency of failure just
> > may point to whatever mechanical operation is happening that often. If that
> > was the case, I bet it wouldn't be hard to figure out where the area is that
> > has this kind of repetitive frequency.
> >
> > For what it's worth.
> >
> > Bruce Johnston
> >
> > Bruce Johnston Computing
> > <http://members.aol.com/bjohns7764>
> > Internet home for "SuperFix" and "MegaFix" image processing software.
> > Personal page: <http://members.aol.com/ccdastro>
>
> --
> Wayne T. Watson (121.015 Deg. W, 39.262 Deg. N, 2,701 feet)
>
> Twixt the optimist and pessimist
> The difference is droll:
> The optimist sees the doughnut
> But the pessimist sees the hole.
> -- McLandburgh Wilson, Optimist and Pessimist
>
> Web Page: http://home.earthlink.net/~mtnviews

--
Wayne T. Watson (121.015 Deg. W, 39.262 Deg. N, 2,701 feet)

Twixt the optimist and pessimist
The difference is droll:
The optimist sees the doughnut
But the pessimist sees the hole.
-- McLandburgh Wilson, Optimist and Pessimist

Web Page: http://home.earthlink.net/~mtnviews

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