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| This manual barn door mount was made straight from the instructions on R. Duvall's Barn Door Tracker web page. My polar finder is a piece of 1/4 inch scrap brass plumber tube. In an effort to innovate a bit, I placed cross-hairs on the end and covered them with a small lens I cut out of a piece of optical acrylic. I have not found the cross-hairs to be functional, however, as without some kind of LED illumination they cannot be seen against the night sky. |
| LINKS TO OTHER BARN DOOR SITES A Single Arm Barn Door Tracker Nice graphics and a lot of background Barn Door Tracker A motorized version for 15 minute tracking A Better Barn Door Stephen Tonkin's site with a referral to his book A Low-tech Barn Door Drive A good site for the beginner A Quartz Controlled Scotch Mount A motorized mount, lots of specs A Heavy Duty Tangent Arm Drive A motorized, 20 minute tracking mount with detailed specs |
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| A view of the mount featuring the polar finder. |
| The popsicle stick (use a big one from a Dove ice cream bar) turns a 3 inch x 1/4 inch carriage bolt. The nut on the underside is held in place with silicone glue. |
| The parts for the manual mount cost only a few dollars. A small square of masonite with a hole cut to size helps keep the plastic housing glued in place. I glued the screw in the wood-ball after carefully measuring it to ensure that the protruding end screws all the way in to the base of the camera. |