Re: [APML] 'challenge'

[stephen pitt <lthuedk@pe.net>]

Hi Brian: Since I'm familiar with triple tube guiding and with
differential exposures during active multiple lens use, this seems like
what I'll do without a second thought.  I use two refractors, one at
f6.1 and the other at f6.9 frequently, so their field sizes are close. 
Thats all that matters to me at this point.  That both objects are small
calls for extremely fine grain.  Fuji Provia 100 F or 400 F is the
natural choice for a must have, single exposure with enough colour
density and value response to give a worthwhile effort.  The 100f is my
first choice.  Stephen

Brian Lula wrote:
> 
> Hi Stephen,
> 
> I think it will be interesting just to find out what techniques work well in a real time
> sense. A variety of experimentation is good....two scopes, one or two image series
> with one scope, or maybe simultaneous RGB series on each quadrant of a CCD since
> M1 and Saturn are so small and then recombining them.
> 
> In any event it should be fun!
> 
> Brian Lula
> 
> 
> 
>  On 19 Dec 02, at 14:30, stephen pitt wrote:
> 
> > Brian and Chris: I understand the spirit of the photographic challenge,
> > but also think that two scopes acting simultaneously and using only two
> > frames is ethical.  Respectfully, Stephen
> >
> > Brian Lula wrote:
> > >
> > > Hi Chris,
> > >
> > > I agree with you Chris. The real "challenge" is how to optimize this event real time
> > > using innovative imaging techniques. It may not look as nice but that's not the point. It
> > > also makes for a level playing field with Saturn's brightness coming in to play.
> > >
> > > Brian Lula
> > >
> > > On 19 Dec 02, at 15:41, Chris Schur wrote:
> > >
> > > > I have to strongly disagree with those who say its OK to composite an image
> > > > and think of it as anything like a challenge.  I can do that tonight, with
> > > > an atlas for a guide as to where saturn is going to be, and thats cheating.
> > > > Wouldnt it be clever, if we could think of a way to REALLY get the image,
> > > > real time?  Not some pasted together fake, but an actual image.  I can think
> > > > of several ways to do this.  My first thoughts are to shoot with the Ha
> > > > filter and CCD, and determine the maximum exposure in seconds so saturn just
> > > > doen not saturate.  Than add bunches of those, that can fit within a narrow
> > > > 10 or 15 minute time frame so saturn does not move very far between shots.
> > > > You will end of with (I hope!) a black and white REAL image, fully
> > > > appreciated by your peers as a worthy effort to the upcomming january 4th
> > > > challenge.
> > > >
> > > > Sorry I feel so strongly about this, but after Astronomy Magazine published
> > > > the moon-saturn paste up a number of months back, I shudder at the thought
> > > > of what things could come to if this is taken for granted.  I would like to
> > > > hear others thoughts on this, the use of masks for example during exposure,
> > > > or whatever.
> > > >
> > > > Ok, shoot me.
> > > >
> > > > Chris Schur
> > > >
> > > > -----Original Message-----
> > > > From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On
> > > > Behalf Of Matt BenDaniel
> > > > Sent: Thursday, December 19, 2002 2:00 PM
> > > > To: astro-photo@seds.org
> > > > Cc: direland@drdale.com
> > > > Subject: Re: [APML] 'challenge'
> > > >
> > > >
> > > > Dale,
> > > >
> > > > It depends on the "rules".  You could take a long exposure of the Crab
> > > > before Saturn crosses it.  Then you could take a short exposure of Saturn
> > > > as it crosses.  Assuming you register the images on the stars, would that
> > > > be "fair"?  It can even be accomplished without using any digital
> > > > technologies (although I would).
> > > >
> > > > Matt
> > > >
> > > >
> > > > Dale Ireland said:
> > > > > Saturn passes across the Crab Nebula Jan 3. That should be a real photo
> > > > > "challenge"
> > > > --
> > > > Matt BenDaniel
> > > > http://starmatt.com
> > > >
> > > >
> > > >
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> > > >
> > > >
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> > >
> > > Brian Lula
> > > Polytec PI, Inc.
> > > (508) 832-3456
> > >
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> 
> Brian Lula
> Polytec PI, Inc.
> (508) 832-3456
> 
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