Amateur Telescope Making Advanced, Book Two (A Sequel to - download pdf or read online

By Albert G. Ingalls

Backwoods Philosophy-Everest replicate Making Sub-diameter instruments steel Mirrors and apartments Astigmatism-Warner Prisms, residences, Mirrors- construction A Quantitative Optical try for Telescope Mirrors-King appearing the Ronchi attempt Quantitatively The Hartmann Test-Calder Flats-Selby Notes the of Optical resting the best way to Make Eyepiece Lenses The Refractor-Metal elements and Mounting-Taylor The Refracting Telescope-Principles of Operation and ConstructionHaviland typically at the aim Lens objective Scopes-Kirkham For the Rifleman checking out Convex round Surfaces-King Collimation and Adjustment Diagonal circulate Telescope Drives-Lower for greater Telescopes Spring Drives for Telescopes The Springfield Mounting-Pattern Making-Porter With of Molding and Casting Molding and Casting Parts-Ferson Molding and Casting a Fork-Mason Springfield Mounting mideligw on Molding and Casting Machining the Springfield Mounting-Porter Motor Drives, Counterweighting, Pier-Springfield Mounting-Porter....

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Extra info for Amateur Telescope Making Advanced, Book Two (A Sequel to Amateur Telescope Making, Book One)

Example text

Thc. clock s t r o k r , : Tliis is for tliose xvlio, lilcr tlie writer, get dizzy walkiiig arountl the barrel, ancl for tliose xvlio suffer tlie costive effects* of loiig hoiirs iri sin officr ch:iir, tlie sirle strokes :it tliree arid xiine o'clock will be founcl nn rfficient forrri of siiI~di:iplirngm:itic* exercise. híount tlie Iap :it tlie edge of a firiri beiicli, nt tlie proper liright t o briiig tlic forenrrns in a horizontal pusition. Stand xritli the feet about 18" apart. Iniagine tlie lap t o be the face of a clock.

Slie distributiori of iiititeriiil tu ht. remoreti can be seen by lnying a straiglitetlge arross tlie tal) of tlie I:ist curvc in "'l'lic. iiter of currature, :inri not develop t i hole. 'rlie first curve iii the family sliows tlir p r o l ~ c r cross-sectioii. 11s tlic differeiice between iriside antl outhicle raclii of curvature oppro:t<-lies +/R, work should be more and more leisiirely, witli plirity of tiiiie oii tlie testing stand for the mirror t o coriie to ecluilibrium. F o r tlic final test, tlic rriirror sliould be left several Iiours; fur Pyrex, une hour rvill do.

Tlie stroltes iisrtl are 1;lrge epicycl's nroiirid tlic iiiirror, :ilterii:ite

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Amateur Telescope Making Advanced, Book Two (A Sequel to Amateur Telescope Making, Book One) by Albert G. Ingalls


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