From: "Milton Aupperle" <milton@outcastsoft.com>

Date: April 14, 2009 4:04:44 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Seeing in Calgary..

Hi folks;

Just for fun ,I thought I'd share what "typical" seeing is like here in Calgary:

http://groups.yahoo.com/group/Astro_IIDC/files/Planetary/SaturnAverageSeeing_MJA20090404.mp4 

using Saturn as an example, taken on the Night of April 4th. It's been overcast, windy or snowing since then so I haven't been able to do anything for a few weeks.

This 157 kilobyte mp4 movie clip shows overexposed Saturn with Titan (and 4 other moons if you curve stretch it). It was shot at 7.5 fps with my C8 at 2,000 mm focal length. I was doing a test run to get the proper exposures for doing a series of shots showing the movement of Saturn's moons over say a 3 to 5 hour period. I wasn't interested in imaging Saturn, just the moon movements.

The Jet Stream was 400 km west of me when this was shot, and is pretty typical of the rapid turbulence changes I get here.

TTYL..

Milton Aupperle