By Albert G. Ingalls
Backwoods Philosophy-Everest replicate Making Sub-diameter instruments steel Mirrors and residences Astigmatism-Warner Prisms, residences, Mirrors- creation A Quantitative Optical try for Telescope Mirrors-King acting the Ronchi attempt Quantitatively The Hartmann Test-Calder Flats-Selby Notes the of Optical resting the right way to Make Eyepiece Lenses The Refractor-Metal components and Mounting-Taylor The Refracting Telescope-Principles of Operation and ConstructionHaviland mostly at the goal Lens objective Scopes-Kirkham For the Rifleman checking out Convex round Surfaces-King Collimation and Adjustment Diagonal move Telescope Drives-Lower for higher 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....
Read or Download Amateur Telescope Making Advanced, Book Two (A Sequel to Amateur Telescope Making, Book One) PDF
Best astronomy books
This gorgeous calendar captures the main dramatic celestial occasions of the yr. beautiful photos and art comprise pictures of a complete eclipse of the moon, a couple of galaxies colliding, and the Hubble area Telescope picture of Saturn. every month additionally contains details on viewing quite a few celestial occasions.
With approximately 200,000 entries, StarBriefs Plus represents the main accomplished and correctly proven choice of abbreviations, acronyms, contractions and logos inside astronomy, comparable house sciences and different comparable fields. As such, this useful reference resource (and its spouse quantity, StarGuides Plus) will be at the reference shelf of each library, association or person with any curiosity in those parts.
Examines the actual features and stipulations of Mars, describing its place on the subject of the sunlight and different planets and surveying humanity's makes an attempt to penetrate its mysteries.
- The Moon that Wasn't: The Saga of Venus' Spurious Satellite (Science Networks. Historical Studies)
- Sky & Telescope July 2010
- Navigating the Night Sky: How to Identify the Stars and Constellations
- Aprender Astronomía con 100 ejercicios prácticos
- Five Billion Years of Solitude: The Search for Life Among the Stars
Extra info for Amateur Telescope Making Advanced, Book Two (A Sequel to Amateur Telescope Making, Book One)
Prt,h,iire used, c1i;imrtir :irid tliiclíness of tlic f:icets. Pitcli 1i;irdiiess is liriiitrcl to tlie point wliere ileeks are likcly t o result. With fine optical rouge, 20 sec. pitcli for plate glass ;ind 40 sec. for Pyrex ieem t o I)e íil)out the maximum safe limits. Witli cnre in washing the roiige and applying it t o the l;iy:, tliese limits may be e x c e d e d by experienced worlcers. Hut, for safety a i t l i super-hard laph, it is good insurcince t o piiint on the tliiriiiest possible laminkition of aboiit 10 sec.
Hren some\vliere nrnr nn nvertipe of tlie tmo :lbore conditions, very little c1i:iiige will be seen. Tlie average worlcer docsn't rrnlizr the nmount of lie:it gener:rted. t :rll j~olisliirig mork is dissipatcd i r i tlie forrn of lie:it, iii contrast t o gririding wliere rnoit «f tlie work pcrfornird goes into the actu:il rerriuval of glass. , a 10" to lS0 F. rise in temperature will be found to be a iiorixi:il oc- MIRROR MAKING 31 currence after a sprll of polisliirig. Sliis w;is iictiinlly clirckrtl hy n tlicrrnocouple sealed in tlie bottoiri of a liole drilled ne:irly througli a mirror.
I n using the blending overhang stroke, t o rcmove a central bump, the marginal f:icets should be well pressed down, using an overliang well out t o the edge of the lüp. As soon a s this is done the overliang should be pulled in a bit t o prevent forming a hole. If a hole shoulcl start, remove the crater around i t at once with a ~ p i n n i n g overhang, rotating the mirror rapidly with the palrns of the two Iiands against the side of tlie handle flange, keeping tlie crest of the crater just inside the rim of the l a p and gradually w o r k i n ~the mirror t o new positions t o equalize ttie facet action.