M13 - Globular cluster in the Hercules constellation

First astro shot using the Astrotrac sidereal tracker. The tracking is spot on. Unfortunately the subs were taken during the final stages of twilight when the sun was only about 15 degrees under the horizon. Not to mention a waning gibbous moon had just risen. Considering the odds were stacked against me I was more than happy with the result.

For those of you who are interested in learning more about the Astrotrac you may want to follow this link to the Astrotrac Website.

There is also a user group hosted with Yahoo groups which is attended regularly by the Astrotrac designer and manufacturer Richard Taylor. Go to the Astrotrac User group.

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6 x 2.5min subs, Canon 450D, ISO1600, 300mm (Sigma APO)