1939
| 1930s |
| 1930 | 1931 | 1932 | 1933 | 1934 | 1935 | 1936 | 1937 | 1938 | 1939 |
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December, 1939. An Amateur Spectroheliograph. Alt-Azimuths for Beginners. |
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| Cost:$100+ | Difficulty:  |
Danger 1: (No hazards) | Utility:  |
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November, 1939. More Amateur Telescopes and Observatories |
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| Cost:$100+ | Difficulty:  |
Danger 1: (No hazards) | Utility:  |
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October, 1939. An Amateur 20" Reflector. Pitch Laps for Beginners. |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1939. An Amateur 30" Reflector |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1939. Some Applications of the Schmidt Principle in Optical Design |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1939. Refractors, Astronomy-Inspired Sculpture, a Polarizing Diagonal and Portable Mountings for Beginners |
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| Cost:$0-100 | Difficulty:  |
Danger 1: (No hazards) | Utility: |
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June, 1939. Final Figuring of the 200" Mirror. Two Beginner Telescopes. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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May, 1939. A Polypedalian Telescope, Celestial Photography for Beginners, Gratings. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1939. Avoiding Astigmatism in Mirror-Making. More Mountings for Beginners. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1939. Designing Hershelian Telescopes. Mountings for Beginners. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1939. Measuring Angular Separation, Schmidt Cameras, a Chronograph and Mounting Diagonals for Beginners. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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January, 1939. Aluminizing Equipment, Strain-Testing Glass, Pitch Lap Manufacture. |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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December, 1938. Physical Properties of Glass Applied to Mirror Making |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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November, 1938. Mirror Grinding Machines |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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October, 1938. Portable Telescopes, Profiles of Amateur Telescope Making Authors and Contributors |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1938. A Reflex Euphonium Refractor. Ways to Test for Strain in Glass, Diagonal Mirrors |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1938. A 2500 Pound Telescope, Schmidts, Marking Mirrors. More Amateur Telescopes. |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1938. RFT Cassegrainians, Wax Coating Laps |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1938. Cassegrainian Spec, RFT Eyepieces, How Much Glass Is Removed While Grinding a Mirror? |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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May, 1938. More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1938. More Amateur Telescopes. Dividing Engines, News on 20" Reflectors |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1938. Domes, a Celestial Globe, Schwartzchild Reflectors, Stabilizing Telescopes with Gyros, Obsidian Mirrors |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1938. Solar Viewing and Solar Telescopes, Telescoptic Levity. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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January, 1938. Richest Field Telescopes (RFT) |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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December, 1937. More Amateur Telescopes. Accurate Clock Drives, an "Optical Contact" |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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November, 1937. Domes and Observatories |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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October, 1937. More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1937. Barnard Astronomical Society, Elliptical Diagonal Mirrors, Building a Schmidt, More Amateur Telescopes. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1937. Aluminizing Mirrors, Some Knife-Edge Test Devices. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1937. An Evaporation Chamber, Designing Barlow Lenses, Metal Mirrors, Sources of Rouge |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1937. Making Eyepieces, Clyde Tombaugh's Work, Another Auto-Guider, Barlow Lenses, More on the Hale 200". |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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May, 1937. Working with 20" Mirrors |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1937. Tribute to W. A. F. Ellison |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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March, 1937. The State of the Hobby. More on the Process of Grinding and Polishing, More Amateur Telescopes, Death of W. A. F. Ellison. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1937. More on the 200". 20" Ribbed Glass Disks. |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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January, 1937. A "One Legged" Telescope. Manufacturing Pyrex and Plate Glass. a Drive System with Schematic. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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December, 1936. Two Woman Telescope Makers, Another Schmidt Camera. a Forthcoming Book. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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November, 1936. Telescope Making Around the World |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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October, 1936. More Amateur Telescopes, Pitch Testers and an Observatory. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1936. More Amateur Telescopes, Polishing Hints. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1936. Details of Building the 200". a Project to Observe Jupiter, a Machine for Cutting Setting Circles. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1936. A Newtonian Cassegrainian. Optical Tests Discovered or Improved By Amateurs |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1936. Hempstead Hydrant Mount, "Town Pump" Mount, More on Mirror Making Materials, Helps for Mirror Testing. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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May, 1936. Schmidt Cameras, Device for Reading Setting Circles, a Very Small Observatory, a Proposed Telescope Drive. |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1936. McMath-Hulbert Observatory, Spectroheliograph |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1936. Wooden Telescope Tubes. Photomicrographs of Polishing Abrasives and Mirror Surfaces |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1936. Understanding Mirror Aberrations, Mounts. |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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January, 1936. New Method of Making Pitch Laps, Figuring Mirrors |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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December, 1935. Another Amateur's Observatory, Hints on the Knife-Edge Test, Mirror Figuring Myths |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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November, 1935. Organizing an Astronomy Club |
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| Cost:$0-100 | Difficulty:  |
Danger 1: (No hazards) | Utility: |
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October, 1935. A Pitch-Tester |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1935. More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1935. Coatings Mirrors Using the Evaporation Process, Tips for Working with Pitch |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1935. Unusual Telescope Configurations |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1935. A Sidereastat Observatory |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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May, 1935. Mounts, Ronchi Test, Miss America Makes a Telescope |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1935. Working with Small Lenses |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1935. Cassegrainians, the Ronchi Test, Using Sub-Diameter Grinding Tools |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1935. Working with Convex Spherical Surfaces |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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January, 1935. Telescope Rifle Sights, Conclusion |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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December, 1934. Telescope Rifle Sights |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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November, 1934. Another Gregorian Telescope |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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October, 1934. Slow-Motion Declination Mount, Polishing Hints, Checking a Mirror's Polish |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1934. Accuracy of the Knife-Edge Test |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1934. More on Automatic Grinding |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1934. Another Automatic Mirror Grinder |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1934. A Young Telescope Maker, Lining Up Optical Parts |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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May, 1934. A Telescope Maker's Magazine? |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1934. Grinding Machines |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1934. The Galileo Amateur Observatory, a Lady Telescope Maker |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1934. Photocell Automatic Guilder |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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January, 1934. More Amateur Telescopes, the State of Telescope Clubs, Tips on Silvering |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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December, 1933. More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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November, 1933. A Novel Mount-Cum-Observatory, Radius of Zone Measurements, Calculating Focal Lengths |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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October, 1933. The First Amateur Spectroheliograph |
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| Cost:$100+ | Difficulty: |
Danger 3: (Serious injury possible) | Utility: |
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September, 1933. More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1933. More on Anaplanatic Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1933. Secrets of Ritchey-Chretien (Anaplanatic) Telescopes, Concluded |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1933. Secrets of Ritchey-Chretien (Anaplanatic) Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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May, 1933. Clock Drives and Graduating Setting Circles |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1933. Portable Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1933. More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1933. More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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January, 1933. 3rd Edition of Amateur Telescope Making and the State of the Hobby |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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December, 1932. Amateur House-Top Dome, Another Method of Silvering |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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November, 1932. 6th Annual Stellafane, a Portable Telescope and a Home-Built Dome |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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October, 1932. Binocular Telescopes Revisited |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1932. Observatory Structures |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1932. Amateur-Build Cassegrainians |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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July, 1932. Knife-Edge Tests, Lap Media |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1932. Focograms |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
|
May, 1932. Telescopes Made By Advanced Amateurs |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1932. Dangers of Silvering Mirrors |
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| Cost:$100+ | Difficulty: |
Danger 3: (Serious injury possible) | Utility: |
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March, 1932. Telescope Makers; Very Young, Very Old |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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February, 1932. More on Cassegrainians and Their Construction |
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| Cost:$100+ | Difficulty: |
Danger 1: (No hazards) | Utility: |
|
January, 1932. Making Mirrors From Pyrex Pie Plates? More Amateur Telescopes |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
|
December, 1931. More Amateur Telescopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
November, 1931. Cassegrainians, an Observatory Hutch |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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October, 1931. The Porter Turret Telescope, Sundry Clubs and Groups of Telescope Makers |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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September, 1931. Telescopes Made in Out-of-the-Way Places |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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August, 1931. A Mirror Grinding Machine, a "Spark Plug" Telescope Mount |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
July, 1931. Making Objective Lenses |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
June, 1931. Telescopes Made By College Professors |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
May, 1931. More Amateur Telescopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
April, 1931. A Water-Clock Drive, Silvered Prisms, Sources of Info on Silvering Mirrors |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
March, 1931. More Amateur Telescopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
February, 1931. A Binocular Telescope |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
January, 1931. Optics and Temperature Problems |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
December, 1930. 12 Inch Cassegrainians, Spectrohelioscopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
November, 1930. More Amateur Telescopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
October, 1930. 5th Annual Stellafane, the Porter Turret Telescope |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
September, 1930. Domes and Other Housings |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
August, 1930. Inexpensive Homemade Telescopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
July, 1930. More Amateur Telescopes, Spectrohelioscopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
June, 1930. More Amateur Telescopes, a Note on Amateur Astronomer Clyde Tombaugh |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
May, 1930. Skeletal Vs. Tube Reflector Housings |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
April, 1930. More Amateur Telescopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
March, 1930. Amateur Refracting Telescopes |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
February, 1930. Atmosphere, Telescope and Observer Concluded |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
|
January, 1930. Young Telescope Makers, "Atmosphere, Telescope and Observer" |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |