Rough Parabolizing Part 1: Preparations and Working a Central Hill (added 05/09/10)
Rough Parabolizing Part 2: Deepening the Curve (added 05/09/10)
A New 20" f/3.5" Fast Mirror on Quartz, Part 1, Measurements (added 05/03/10)
Ronchi and Foucault Tests on the 20" f/4.5 Quartz Telescope Mirror (added 04/29/10)
Figuring a 20" Mirror, Part 1: Reducing a High Zone
Figuring a 20" Mirror, Part 2: Smoothing and Blending Techniques
Making a Ceramic Tile and Dental Plaster Grinding Tool
Rough Polishing the 20" f/4.5 Telescope Mirror
Measuring the Radius on the 20" Mirror
DIY Spherometer, Part 1: The Build
DIY Spherometer, Part 2: Calibrating and Using the Instrument Recycling Pitch for Laps for the the 20" Quartz mirror Pouring a 15" Pitch Lap Channeling a 15" Pitch Lap Fine Grinding a 20" Quartz Telescope Mirror Rough Grinding on the Fixed-Post Mirror Grinding Machine Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror
Recycling Pitch for Laps for the the 20" Quartz mirror
Pouring a 15" Pitch Lap
Channeling a 15" Pitch Lap
Fine Grinding a 20" Quartz Telescope Mirror
Rough Grinding on the Fixed-Post Mirror Grinding Machine
Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror
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