Things of Interest!
Seeing Spots - A study of achromatic refractor performance
Making a Curved Vane Spider & Holder
A new design for an 8" f/8 Newtonian
A Quick Read Two Mirror Reflector and Catadioptric Types - Explained
Winter Star Party 2010 with the 16" Dall-Kirkham OTA
Winter Star Party 2009 with the 12.5" Dall-Kirkham OTA
Winter Star Party 2008 with the 10" Dall-Kirkham OTA
A Review of one of my 8" mirrors and a 15" mirror
Cleaning Mirrors - A new and better version
Mars is ALWAYS coming again! - Don't wait - Order you mirrors in advance and avoid the rush.
AT LAST! Smaller Conical Mirrors are HERE Go
to conical mirrors for pricing and description
See one person's easy-to-make home-made cell.
And now HERE as well, a lightweight 10" f/6 telescope you can build for conical and standard mirrors
Amateur Telescopes Pictures of people who have built telescopes and taken images using my optics.
Observing Essentials - What you really need to get the most out of high resolution observing
Cassegrain Primer -
Answers to questions about Ritchey-Chretien, Classical and Dall-Kirkham Systems
An aid to those contemplating the purchase of a Cassegrain type system. The facts and figures.
Analysis of the Impact of Focal Ratio on Off-axis Images
An aid to those contemplating the purchase of a short ratio mirror. The facts and figures.
Some comments and experiences from customers