With my atlas, seems to give the best results unguided. Don J. Colton wrote:
Why did you run it at 1.75X sidereal.
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of David Rankin Sent: Sunday, October 11, 2009 12:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Some New Shots
Joe,
Actually, I hook the camera to the mount using the same dovetail I use for my scope...losmandy style dovetail. I take the tripod head off of my regular camera tripod and hook it to the dovetail then attach that to the mount. There was no scope or guiding involved. Just did a polar alignment and ran at 1.75x sidereal. The alas is pretty good for this sort of thing as long as your at low magnification. The subs I used were between 2 and 2 1/2 minutes. (Fast little lens)
Cheers
David
Joe Bauman wrote:
That's very interesting, David. I assume your camera was piggyback on a
telescope that was tracking. What was the telescope, and how long was the exposure? Thanks, Joe
--- On Sun, 10/11/09, David Rankin <David@rankinstudio.com> wrote:
From: David Rankin <David@rankinstudio.com> Subject: [Utah-astronomy] Some New Shots To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Sunday, October 11, 2009, 11:11 AM
Yes, fall break has arrived. I am back home in Southern UT and finally got
some new shots.
http://www.slas.us/gallery2/main.php?g2_itemId=2442&g2_imageViewsIndex=1
Milky Way Wide Field
http://www.slas.us/gallery2/main.php?g2_itemId=2445&g2_imageViewsIndex=1
Heart of Cygnus
These were taken with a new camera lens that is great for wide field astro
work. Canon 50mm F1.8 stopped down to around F4 gives some amazing results for a lens that costs under 100$ o.O
Cheers
David Rankin
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