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Re: [APML] 'challenge'

>Perhaps, but I was able to successfully shoot Saturn and several of the
>moons ( I believe they are around mag 10) using an SBIG ST10E.
>See: http://www.astro-physics.com/gallery/astroph/roland/saturnsmall.htm

>Roland Christen



I "cheated" for this one as the moons are pasted in <g>
http://home.attbi.com/~jeboud/saturn_temp.htm
But hey, it was done with only a $70 webcam ;o)

30 exposures were used for the image of Saturn, and 10 longer exposures for
the moons. Fortunately, in the short exposures used for Saturn itself, Titan
was bright enough to show up in Photoshop under the "Equalize" mode. That
allowed me to get an accurately aligned paste of the moons around Saturn.
 
Unfortunately, the brightness difference between M1 and Saturn is a lot bigger than between Saturn and it's regularly observed moons <g> 
 
 
John Boudreau
http://home.attbi.com/~jeboud/astro.htm
----- Original Message -----
Sent: Thursday, December 19, 2002 7:45 PM
Subject: Re: [APML] 'challenge'

In a message dated 12/19/2002 6:38:29 PM Central Standard Time, astropix@att.net writes:




     Why not just concede the fact that Saturn will be grossly over-exposed in
any single film shot that reveals M1


Perhaps, but I was able to successfully shoot Saturn and several of the moons ( I believe they are around mag 10) using an SBIG ST10E.
See: http://www.astro-physics.com/gallery/astroph/roland/saturnsmall.htm

The technique is to shoot a dozen or more short exposures where Saturn will be just at the point of saturation. The faint stuff will be in the noise, but averaging the frames will allow you to dig the image out of the noise.

Roland Christen