RE: [APML] 'challenge'

["Dale Ireland" <direland@drdale.com>]

Chris
Yes I agree with you, I am not a fan of compositing either for that sort of
dynamic image. At least it would have some aspect of "reality" if the Saturn
image had a couple stars in it to guarantee it was placed in the "real"
place with the proper scale. I have always said composites are "OK" if they
are labeled as such but the labels don't always follow the images. Rehmann's
composite of the comet and M31 in both calendars is an example.
Dale

> -----Original Message-----
> From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On
> Behalf Of Chris Schur
> Sent: Thursday, December 19, 2002 2:42 PM
> To: astro-photo@seds.org
> Subject: RE: [APML] 'challenge'
>
>
> 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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