AAVSO Observer Code CMJA / Minor Planet Centre Observatory Code H61 / Global Telescope Network Partner GTN-33 / Center for Backyard Astrophysics
Second Observatory

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This was the view of the observatory interior through the access door, and gives a good view of the custom wedge and pier on which the telescope rested. Note the fine altitude and azimuth wedge adjustments which proved invaluable during drift alignment routines. To the left in the picture is the computer stand. An adjustable observing chair is visible behind the pier. |
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Here was my set-up. At the business end of the Meade 12 inch LX200 was a Lumicon Giant Easy Guider, which included a very fine 80mm focal reducer lens. To this was attached a Meade #644 flip mirror with a Series 4000 Plossl 9mm reticule eyepiece. The Meade model 216XT CCD camera was attached to the flip mirror.
At the bottom of the picture is a small "box" containing a muffin fan which blew air across the CCD camera heat sink fins. This dissipated heat much more quickly, and I was able to cool the camera to -20C. The fan is mounted on a tripod so that it can be tilted in any orientation.
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Photos and sketches can be seen in my detailed construction notes. I have scanned my c.1982 observatory plans. There are 15 sketches as GIF images, and 18 photos showing construction.
Observatory Specifications:
Diameter: 8 feet
Height: 9 feet
Superstructure: Laminated plywood
Dome Covering: 1/8 inch masonite
Base Covering: Pre-painted, corrugated steel siding
Pier: 8 inch diameter, 1/2 inch wall
Wedge: Custom made aluminium alloy
The image at right was taken in September 1999. The single most major modification was the replacement of Masonite sheathing on the base. To start, the Masonite was inexpensive and lasted ten years. However, the humidity slowly deteriorated the Masonite about 6 inches up from the ground. The base was re-sheathed with corrugated steel that has a baked-on enamel finish. The dome still has the original Masonite sheathing on it after 20 years of use, and showed no sign of deterioration (the dome was sold in August 2004 with the original sheathing in very good condition).

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Danny Jones