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| 25" Obsession Telescope with ServoCAT |
| Upper Cage Assembly with Camera Setup |
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| Side View |
| Upper Cage Assembly with Camera Setup |
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| Top View |
Images taken using 25" Obsession Telescope with Galaxy Mirror, Stellarcat ServoCAT, Argo-Navis DSC, Optec Pyxis Field
De-Rotator, SBIG ST-2000XCM, SBIG AO-7, and Optec TCF-S.
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| M13 20 minute exposure. 04/02/05 |
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| Processing: Dark Subtract, Single Shot Color. |
| M13 Same as above, but with post processing. |
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| Dark Subtract, Single Shot Color, Adobe Photoshop Image Adjust Levels and Curves. |
| M27 20 minute exposure. 4/2/05 |
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| Processing: Dark Subtract and Single Shot Color. |
| NGC 6946 30 minute exposure. 4/17/05 |
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| Processing: Dark Subtract, Adobe Photoshop Image Adjust Curves. |
| M101 7X5 minute exposures. 4/16/05 |
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| Processing: Dark Subtract, RegiStar 1.0, Adobe Photoshop Image Adjust Curves. |
| M92 20 minutes exposure. 4/10/05 |
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| Processing: Dark Subtract and Single Shot Color. |
| NGC 4688 fragment 10 minute exposure. 4/10/05 |
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| Processing: Dark Subtract and Single Shot Color. |
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To my knowledge, this is the first time a field de-rotator has been applied to an Obsession Telescope. The StellarCAT
does an excellent job of tracking, and the AO-7 compensates very well for slight motion due to wind or vibration. The
camera setup is installed in the Upper Cage Assembly, looking directly into the 25" Galaxy Optics mirror. Please keep
in mind that the SBIG ST-2000XCM is considered an intermediate CCD camera at best.
I was very surprised to find out how much a picture can change/improve with post processing! The second M13 image
has been post processed using Adobe Photoshop and the information found in Ron Wodaski's book "The New CCD Astronomy" Chapter
9, Section 2: "Globular Clusters".
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Last Updated: April 20, 2005
Email: danielrprice@verizon.net
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