Daniel, I noticed that there was something small that was picked up in the image. Those things don't cause me too much trouble when imaging because I usually employ a sigma combine method that throws away those pesky outliers. Cheers, Tyler _____________________________________________ -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of daniel turner Sent: Wednesday, February 04, 2009 2:34 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Comet Lulin on 2/3/09 Tyler: Looks like you picked up a crossing asteroid. It appears to be too slow for a satellite. On astrophotography discussion groups, asteroids are described as the "vermin of the skies". DT --- On Wed, 2/4/09, Tyler Allred <tylerallred@earthlink.net> wrote:
From: Tyler Allred <tylerallred@earthlink.net> Subject: Re: [Utah-astronomy] Comet Lulin on 2/3/09 To: "'Utah Astronomy'" <utah-astronomy@mailman.xmission.com> Date: Wednesday, February 4, 2009, 11:44 AM Chuck, I have been working on a little animation of Comet Lulin, which is on the gallery at this link:
http://www.slas.us/gallery2/main.php?g2_itemId=955
It was 6 frames taken between 5:03 and 6:22 AM, the morning of the 3rd.
Take a look. Do you think the end members of the sequence would have enough separation for a decent stereo pair?
Cheers, Tyler
_____________________________________________
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Tuesday, February 03, 2009 7:57 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Comet Lulin on 2/3/09
Tyler, if you could shoot two images during the same session, separated by the largest interval possible without incursion of twilight, they would make a dandy stereo pair.
The motion of the earth and comet through space during the time between exposures, will shift the comet relative to the background stars enough to give us a good 3D effect. Simultaneous exposures separated by distance are not required for stereo comet imaging. The crossed-eyes method will work great on a computer monitor (unless you are one of the unfortunate people who can't fuse overlapped images).
This comet is no Hale-Bopp, but if the tail sprouts a bit, we could have another like Ikeya-Zhang. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com
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