Keywords:
Telescopes -- Design and construction.
;
Electronic books.
Description / Table of Contents:
This is a book about making telescopes from available parts. It provides guidance on where to look and what to look for in selecting items for telescope making and explains how to assemble these components to produce an excellent instrument on a tight budget.
Type of Medium:
Online Resource
Pages:
1 online resource (204 pages)
Edition:
1st ed.
ISBN:
9781441964151
Series Statement:
The Patrick Moore Practical Astronomy Series
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=646117
DDC:
522.2
Language:
English
Note:
Intro -- Acknowledgments -- Contents -- About the Author -- 1 Introduction -- Tools -- Absolutely Necessary -- Very Helpful or Necessary for Particular Tasks -- Nice to Have -- Ergonomics -- Whats Not Included in this Book -- General Advice -- Safety Tips -- 2 To Buy or Build a Telescope -- 3 Telescope Types and Designs -- Telescope Types -- Reflector Telescopes -- Refractor Telescopes -- Telescope Design Considerations -- A Real Simple Telescope -- 4 Build a Good Copyscope -- The Small Copyscope -- Optical Parts -- Objective Lens -- Eyepiece -- Focuser -- Mechanical Parts -- Tube -- Mounting -- Finder -- The Medium Copyscope -- Optical Parts -- Objective Lens -- Eyepiece -- Focuser -- Mechanical Parts -- Tube -- Mounting -- Finder -- The Large Copyscope -- Optical Parts -- Objective Lens -- Focuser -- Eyepiece -- Mechanical Parts -- Tube -- Mounting -- Finder -- How to Make Your Copyscope -- Focal Length -- Alignment -- Mounting a Copyscope -- 5 The 80mm Refractor -- Telescope Description and Capabilities -- Specifications and Components -- Objective Lens -- Objective Cell -- Main Tube -- Eyepiece End and Focuser -- Star Diagonal -- Finder -- 6 Newtonian Telescopes -- Typical Newtonian Telescopes -- The Objective Mirror -- Mirror Mounting -- A Spider in Your Telescope -- Mirror Cells -- Simple Collimation -- 7 The F17 4-Inch Refractor -- The Rotating Star Diagonal -- The Back Two Bulkheads -- The Diagonal Mirror -- Mounting the Refractor Using a Cradle -- 8 Focusers, Eyepieces, Barlows, and Finders -- Focusers -- Telescoping Tubes -- Rack and Pinion Design -- Helical Design -- Crayford Design -- Eyepieces -- Eye Relief -- Exit Pupil -- Achromats -- Very Modern Wide Angle Eyepieces -- Compound Projection and Camera Lenses -- Barlow Lenses -- Image Inverter (Erecting Lens) -- Finders -- Requirements for a Workable Finder Scope.
,
Satisfying the Finder Requirements -- Peep Sight Finder -- Laser Pointer as a Finder -- 9 Tubes -- Closed Tube Approaches -- Wooden Tubes -- Getting Started -- Assembly of the Tube -- Using Gussets -- Wood Tubes Without Gussets -- Open Tubes -- Truss Tubes -- 10 Building a 12.5-Inch Newtonian with Rotating Cage -- Dimensions of the Tube (Box) -- Diagonal -- Spider -- Upper Tube Rotation -- Doughnuts to Preserve Alignment -- Stabilizers -- Mounting -- 11 Ergonomic Mounts -- Mounting Types -- Supports -- Balance and Moment -- Wedges -- An Ergonomic Altazimuth Mount -- 12 Evaluation, Quality Testing, and Optical Aberrations -- How Good Does It Need to Be -- Common Faults -- Focal Length -- Quality Testing -- Possible Construction Problems -- Lenses -- Mirrors -- Mirror Reflective Coatings -- Optical Quality Terminology -- Wavelength-Based Measurements -- Rays and Waves -- Scratch and Dig Optical Surface Specifications -- Scatter (Spot) Diagrams -- Strehl Ratio -- Quality of ''Flat'' Mirrors -- Testing a Flat -- Optical Aberrations -- Quick and Easy Tests -- 13 Junk Collecting and Working with Modern Materials -- Junk Collection (Creative Cross Utilization) -- Lens Restoration/Used Lenses -- Lens Cementing -- Getting a Lens Apart -- Polishing and Coating Ideas -- No Drag, No Progress -- How Long Will It Take? -- Lap Making -- Working with PVC Pipe -- PVC Eyepiece Canisters -- For N Canisters -- Other Uses for PVC -- Aligning Parts -- Telescope Mounts -- Lens Cells -- Retaining Rings -- Floor Underlay -- Glues and Cements -- Web Suppliers of Telescope Building PartsINTnl -- and Materials -- Alphabetical Listing of Suppliers -- Products -- Supplier Codes by Product -- Telescope-Building Books and Websites -- Book Must-Haves -- Magazines -- Websites -- Polishing Log -- Units and Conversions -- General Conversions -- Wood Stock and Hardware Conversions.
,
European Plywood Standards -- Timber -- Hardware -- Index -- 4 Build a Good Copyscope -- The Small Copyscope -- Optical Parts -- Objective Lens -- Eyepiece -- Focuser -- Mechanical Parts -- Tube -- Mounting -- Finder -- The Medium Copyscope -- Optical Parts -- Objective Lens -- Eyepiece -- Focuser -- Mechanical Parts -- Tube -- Mounting -- Finder -- The Large Copyscope -- Optical Parts -- Objective Lens -- Focuser -- Eyepiece -- Mechanical Parts -- Tube -- Mounting -- Finder -- How to Make Your Copyscope -- Focal Length -- Alignment -- Mounting a Copyscope -- Index -- Index.
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