Get Amateur Telescope Making Advanced, Book Two (A Sequel to PDF

By Albert G. Ingalls

Backwoods Philosophy-Everest replicate Making Sub-diameter instruments steel Mirrors and residences Astigmatism-Warner Prisms, residences, Mirrors- construction A Quantitative Optical try for Telescope Mirrors-King appearing the Ronchi try Quantitatively The Hartmann Test-Calder Flats-Selby Notes the of Optical resting how you can Make Eyepiece Lenses The Refractor-Metal elements 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 stream Telescope Drives-Lower for better 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....

Show description

Read or Download Amateur Telescope Making Advanced, Book Two (A Sequel to Amateur Telescope Making, Book One) PDF

Best astronomy books

Astral Sciences in Mesopotamia (Handbook of Oriental by Hermann Hunger, David Pingree PDF

Astronomy and astrology, or the astral sciences, performed a tremendous, if now not key position within the political and non secular lifetime of the traditional close to East, and of the Greek and Roman international. this article presents a finished account of the origins of the astral sciences within the old close to East. all sorts of Sumerian or Akkadian textual content facing descriptive or mathematical astronomy, together with many person capsules are completely handled.

Read e-book online Enhancing Hubble's Vision Service: Missions That Expanded PDF

This booklet tells the tale of the 4 missions to take care of Hubble's profitable operation. among 1997 and 2009 those repaired, serviced and upgraded the tools at the telescope to take care of its state of the art services. It attracts on first hand interviews with these heavily interested by the undertaking.

Read e-book online The Stargazer's Guide: How to Read Our Night Sky PDF

The Stargazer's consultant is an available astronomy consultant to the historical past, technological know-how, and delusion of the evening sky, excellent for an individual entranced via the celebrities. Guiding readers via what there's to determine within the sky, why it's fascinating, and the way prior generations seen and interpreted it, professional stargazer Emily Winterburn entertains and informs with this enjoyable, obtainable, and beautiful examine the great thing about the heavens.

Deep-Sky Wonders - download pdf or read online

Highlights from Sky & Telescope's Deep-Sky Wonders column show the independence of concept and devotion to craft that made author "Scotty" Houston a favourite between readers for nearly 50 years. Sky & Telescope journal contributing editor Stephen James O'Meara has chosen and organized the easiest of Scotty's paintings right into a year-round consultant to the megastar clusters, nebulae, and galaxies that entice skygazers into their backyards on transparent, darkish nights.

Additional resources for Amateur Telescope Making Advanced, Book Two (A Sequel to Amateur Telescope Making, Book One)

Sample text

If it doesn't, the pressure sliould be relieved, ancl tlie proper polisliinp d r a g secured by corre<+. adjustment of the roiige mixture. To deteriiiirie tliis, s t a r t witli a niixtiire Iinving tlie consistency of tliick crr:im. Witli tliis the rouge granules will : ~ c tlike so m:iny h;ill benrings, allowing the mirror to slide eti5ily orer tlir Izip nnd making tlie facets inviiible tlirciugh the mirror. This, of coiirse is not a true polisliing action. Graclunlly add water, a few drops a t a time t o exposed areas of tlie 1x11, iiotirig Iiow tlie d r a g grndually increnses as tlie oiitlines of tlie facets begiri t o appear.

For srriall pitcli polisliers, tlie glass feet used iinder furiiiture legs make excellent tools, giviiig a good grip for the fingers. They should be ground t o approxininte ciirrature apaiiist the rnirror wliile it is still ir1 tlie rougli grinding stage, and of course, no further grinding is necessary. Tliese polisliers riiiist be used with the mirror face up, witli a fine grade of rouge to preverit sleeks, :incl tliey require frequent renewal of tlie rouge rriixture. Deforrriing tlie lap to concentrate its action in certain zories, or remove its action in others, is standard practice u ~ i t hmany amateurs.

After a few optical surfaces have been made, the amateur learns frofn past experience how t o appiy the necessary preventire measures t o bring the mirror througli spherical and to elin-inate most of the correction mentioned above. But i t does no harm t o get ihto al1 this mess a t least once, so that tlie trirks will be learncd ancl l~el

Download PDF sample

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


by James
4.3

Rated 4.14 of 5 – based on 19 votes