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The dobsonian telescope by kriege and berry pdf


I checked and rechecked the collimation.
4 Since he built these telescopes as aids in his avocation of instructional sidewalk astronomy, he prefers to call the design a gothic 2 patch 1 31 "sidewalk telescope ".
Norman Remer.95, the Schupmann, telescope, the Story, Design, Construction and Use of a Neglected.
I used a laminate trim bit on my router to clear the excess edge off, then used a round-over bit to put a bevel completely around the outer edge to help keep it from lifting.The bottom of the rocker box is one of the main bearings for the telescope - a surface the telescope rotates on (the " azimuth bearing " in astronomer speak).The mirror box is one of the major structures in the telescope.For extended star fields generally, open clusters included, I prefer the view through a flat-field refractor.At three points in the frame of the mirror cell, appliance leveling feet are are inserted in threaded holes that were put in the frame bars.For those who dream of building a big scope, hopefully it will provide some idea of what you can expect when you start down this road.The two are connected by a center pivot bolt, which provides users manual imagistics 1600 one of the main motions of the telescope (rotating to point in any direction left or right).The basic physics says bigger apertures win on resolution.The secondary is supported on a thin-vane spider.Ward, Peter (December 1993).Design and Build, optics 16 (400mm) primary mirror, secondary and thin-vane spider.With averted vision you can detect structure far out in the extended lobe, which is generally much more visible than with a smaller scope.I chose stainless steel for my mirror cell; since my machine shop was doing all the work, I didn't have to worry about the difficulty of working with the material itself.These truss tube designs are sometimes nfs most wanted new version games for pc incorrectly called a Serrurier truss, but since the main truss is not built with an opposing mirror cell truss it only performs one function of that design,.e.I used pipe foam for 1-5/8" pipe to cover.5-inch diameter trusses - I cut a small strip off so it fit snug, and secured a piece around each truss pole with velcro ties.Seeing in the Dark.
I used my router jig to cut full circles, first the outer edge, then the inner edge.





The size is defined by the mirror cell, and by the desire to have the secondary cage nest inside the mirror box during transport.

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