Re: [APML] Jupiter & The Beehive (was 2 More ST-4 questions)

[Stuart Heggie <stuart.j.heggie@sympatico.ca>]

Nice rig! Will let you know how mine turn out.

Stuart

Eddie Guscott wrote:

> Stuart, I was using Elitechrome 200.
>
> Yes it was at F9 through my newly aquired AP152 F9 refractor.
>
> Unless my slides came back from the developer in the wrong order (they are
> unfortunately not numbered), this one was 3 minutes.
>
> The longer exposures were better on M44 but I am not that adept with
> Photoshop yet to transpose the 3 minute Jupiter onto a 15 minute M44.
>
> I did try a little star shaping per Matt Ben Daniel's wonderful web site
>
> Eddie Guscott
>
> ----- Original Message -----
> From: "Stuart Heggie" <stuart.j.heggie@sympatico.ca>
> To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
> Sent: Sunday, April 27, 2003 3:29 PM
> Subject: Re: [APML] 2 More ST-4 questions
>
> > Eddie, that is a nice shot!
> > What film were you using and what were you shooting through that is f/9?
> > Three minutes at f/9 is not a lot of time no matter how fast your film!
> >
> > Stuart
> >
> > Eddie Guscott wrote:
> >
> > > Stuart
> > >
> > > I think your 20 min exposure may have overexposed Jupiter sufficiently
> for
> > > you not to see it's moons.
> > >
> > > I tried several shots a few weeks ago, ranging from 1 min thru 15
> minutes.
> > >
> > > The 3 minute was best. At 7, 10, 20 minutes the overexposed glare around
> > > Jupiter overwhelmed the moons (at F9)
> > >
> > > You can see my 3 minute attempt here:
> > >
> > > http://www.astropics.co.uk/jupiter_m44.jpg
> > >
> > > Eddie Guscott
> > >
> > > ----- Original Message -----
> > > From: "Stuart Heggie" <stuart.j.heggie@sympatico.ca>
> > > To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
> > > Sent: Sunday, April 27, 2003 1:34 PM
> > > Subject: Re: [APML] 2 More ST-4 questions
> > >
> > > > Oddly, it was clear as a bell here in Southern Ontario (but cold
> still,
> > > near 0C).
> > > > Our club had an imaging workshop so I went with my portable SP mount
> and
> > > 4"
> > > > refractor. I piggybacked my shorter lenses for some constellation
> shots.
> > > Took a
> > > > 20min guided-by-eye shot of Jupiter in the Beehive with a 180mm ED
> lens
> > > (Supra 400
> > > > at f2.8) - maybe too long given how bright Jupiter is. Will see. The
> rest
> > > were 10
> > > > min tracked-not-guided 50mm and 24mm shots of constellations (Leo, Big
> > > Dipper,
> > > > Hercules, Scorpius).
> > > >
> > > > Stuart
> > > >
> > > > steve banbury wrote:
> > > >
> > > > > Hi John/Alan--
> > > > >
> > > > > "John C. Mirtle" wrote:
> > > > >
> > > > > >     Ha! Got you beat - we are in the middle of a full-blown
> blizzard.
> > > It's
> > > > > > chest deep with snow in parts of my yard, and it is supposed to
> keep
> > > snowing
> > > > > > until Monday. Looks like this new moon is a wipe-out as well.
> > > > >
> > > > > We have rain here in Calif, and Alan's weather in Oregon doesn't
> sound
> > > any
> > > > > better.
> > > > > Isn't anybody having decent weather?!!
> > > > >
> > > > > The way I look at it-- the rate of change in temperature on the CCD
> must
> > > be
> > > > > greater when actively being pulled down from ambient
> > > > > by a Peltier device compared with the rate of change when passively
> > > drifting
> > > > > back up.  Still it might not be a good idea to drag the CCD into a
> 70
> > > degree
> > > > > house from your snow laden back yard as soon as you're done imaging
> or
> > > guiding.
> > > > >
> > > > > Steve
> > > > >
> > > > > _______________________________________________
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