Dark Sky "Second Light" with the Tele Vue-60is Imaging System

The following images were taken at the 2006 Texas Star Party, in May 2006, using a Hap Griffin-modified Canon 300D (no IR filter at all) on a Tele Vue-60is imaging system mounted on a Losmandy GM-8 mount and autoguided with an Atik IIhs webcam and GuideDog software. Because the camera now has no infrared filter wavelengths out to 1100 nanometers can be recorded by the camera's CMOS sensor, creating a strong red collorcast. To eliminate the color shift, a Baader IR block filter was used to supress IR wavelengths byond the H-alpha range.

These images were stacked and aligned using AIP4Win V2 and further processed using Photoshop 7.0.

The 2006 Texas Star Party suffered from a lot of heavy wind in the evenings which in turn shook my mount quite a bit, causing some slight egg-shaping of the stars. This needs to be taken into account when judging the quality of the TV-60is used to take the pictures. To demonstrate how windy it was at TSP this past year, picture Bob Summerfield 10 feet up his ladder observing through his 36-inch Yard Scope when a wind blast pitched the entire scope up in the air, dragging him up off the ladder. Not a pretty picture!

Cats Paw

3072 X 2048 pixel 877 K .jpg

The Cat's Paw Nebula in Scorpius.
5 min X 15 @ ISO 400

Centaurus A

768 X 736 pixel 53 K .jpg

Centaurus A in Centaurus
This image is better than it looks. The odd stars are caused by
an image stacking problem that I have not yet resolved.
5 min X 12 @ISO 400


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Crascent Moon with Earthshine.
15th sec @ ISO 400

Omega Centauri

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Omega Centauri in Centaurus
5 min X 10 @ ISO 400


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M-4 cluster in Scorpius.
5 min X 10 @ ISO 400

Lagoon Nebula

2048 X3072 pixel 1,008K .jpg

The Lagoon and Trfid Nebulas in Sagittarius
5 min X 4 @ ISO 400


1526 X 1016 pixel 139 K .jpg

M-37 cluster in Auriga
5 min X 10 @ ISO 400


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M-38 cluster in Auriga.
5 min X 11 @ ISO 400


2042 X 1358 pixel 142 K .jpg

M-44 cluster in Cancer
5 min X 9 @ ISO 400


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M-51, the Whirlpool Galaxy in Canes Vanatici
5 min x7 @ ISO 400


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M-57, the Ring Nebula in Lyra.
5 min X 7 @ ISO 400


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M-101 galaxy in Ursa Major.
5 min X 13 @ ISO 400


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The Crescent Nebula in Cygnus
5 min X 10 @ ISO 400

Click here for more TV-60is images from the X-Bar Ranch

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