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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


Tip: A rubber cup, with an attached arm, is used for fine-focusing of a Schmidt-Cassegrain telescope.
ASTRONOMY Jan 1989 (v.17#1) pg. 6

Maksutov telescope with subaperture correctors. Ralph Field calculates the specifications for a 6" primary mirror scope which places the corrector lens between the primary and secondary mirror.
SKY & TELESCOPE Aug 1981 (v.62#2) pg. 166

The Acme telescope. Specifications and description of a reflector that looks like a Cassegrain, but the main mirror is spherical and the small mirror is of the Mangin type.
SKY & TELESCOPE Dec 1982 (v.64#6) pg. 598

A "universal" telescope of the Wright type. Dimensions are given for a multipurpose Wright telescope that can be used as a comet seeker, flat-field, or Cassegrain. Includes tips on fabricating the telescope and grinding the mirror and corrector.
SKY & TELESCOPE Aug 1985 (v.70#2) pg. 167

Notes on movable primary mirrors in some Cassegrain-type reflectors.
SKY & TELESCOPE May 1987 (v.73#5) pg. 555

Special test report on 8" Schmidt-Cassegrain telescopes. A comparison of three Celestron models (Classic, Ultima, Powerstar 4) with three Meade models (2080, LX5, LX6). Part 1. Optical tests and performance.
SKY & TELESCOPE Dec 1989 (v.78#6) pg. 576

Special test report on 8" Schmidt-Cassegrain telescopes (Celestron -vs- Meade). Part 2. Mechanical tests and performance.
SKY & TELESCOPE Jan 1990 (v.79#1) pg. 33
Added Info SKY & TELESCOPE Apr 1990 (v.79#4) pg. 358

Combination Newtonian-Cassegrain telescope uses a spherical secondary and allows planetary photography without the need for a projection lens. Only limited construction details given.
SKY & TELESCOPE Nov 1998 (v.96#5) pg. 121

Notes on focal length. Explaining how the effective focal length of any Cassegrain-type telescope requires an understanding of the inner workings of today's popular telescopes.
SKY & TELESCOPE Apr 2000 (v.99#4) pg. 136

Cassegrain optical systems. Complete equations for calculating Dall-Kirkham and Ritchey-Chretien reflectors that use conic optics. Use this information to build and figure the optics for a high performance telescope.
TELESCOPE MAKING #1 Fall 1978 pg. 1
Correction TELESCOPE MAKING #2 Winter 1978 pg. 32
Correction TELESCOPE MAKING #3 Spring 1979 pg. 3

Optical specifications for a compact, all-spherical, catadioptric Newtonian telescope. It will allow a well-corrected f/6 optical system to fit into a tube the size of an f/4 Newtonian.
TELESCOPE MAKING #3 Spring 1979 pg. 14

An amateur-built reflector with an 80cm (32") f/2.4 primary. A progress report on a cassegrain focus telescope designed to be mounted on a 21-ft. flatbed trailer. Est. cost (to date): $9,700.
TELESCOPE MAKING #4 Summer 1979 pg. 14

Graphs and drawings illustrate the optical performance of a single f/2.4 mirror with spherical, Dall, Cassegrainian, and Richey-Chretien surfaces used at the prime focus. Also looks at two-mirror systems in order to compare the image spot sizes.
TELESCOPE MAKING #4 Summer 1979 pg. 16

Notes on the Jones-Bird telescope. Tips on building and assembling a catadioptric telescope.
TELESCOPE MAKING #11 Spring 1981 pg. 10

The optical performance of 8" Schmidt-Cassegrain telescopes.
TELESCOPE MAKING #13 Fall 1981 pg. 12

Designing Maksutov telescopes from scratch.
TELESCOPE MAKING #14 Winter 1981-82 pg. 36

Optical performance of astronomical cameras. A discussion of 6 catadioptric Cassegrain systems and an investigation of their optical performance by means of optical ray tracing.
TELESCOPE MAKING #18 Winter 1982-83 pg. 12
Added Info TELESCOPE MAKING #19 Spring 1983 pg. 3
Added Info TELESCOPE MAKING #22 Spring 1984 pg. 11

Making correctors for Wright telescopes (similar to a Newtonian, but incorporating a Schmidt corrector plate and spherical mirror).
TELESCOPE MAKING #19 Spring 1983 pg. 36
Added Info TELESCOPE MAKING #21 Winter 1983 pg. 4

Cassegrain and Schmidt-Cassegrain light shield (or baffle) design.
TELESCOPE MAKING #20 Summer-Fall 1983 pg. 47

Making a compact Maksutov.
TELESCOPE MAKING #21 Winter 1983 pg. 48

An interference test for Schmidt camera corrector plates.
TELESCOPE MAKING #27 Spring 1986 pg. 28

Specifications for a simple, 10" high-performance Maksutov-Cassegrainian amateur telescope.
TELESCOPE MAKING #29 Winter 1986-87 pg. 10
Added Info TELESCOPE MAKING #38 Fall 1989 pg. 42

A new test for figuring convex hyperbolic Cassegrain secondaries against their primaries.
TELESCOPE MAKING #31 Winter 1987-88 pg. 24

Design criteria for the Rutten Newtonian, a 250mm f/15 high-performance planetary reflecting telescope. Design uses a catadioptric scheme having only spherical surfaces, an f/4 primary mirror, and a color-corrected three-element lens to increase the focal length to f/15.
TELESCOPE MAKING #35 Winter 1988-89 pg. 46
Added Info TELESCOPE MAKING #36 Spring 1989 pg. 36

Building a 6" unobstructed catadioptric Herschelian telescope.
TELESCOPE MAKING #38 Fall 1989 pg. 10

A motorized Cassegrain secondary. A small linear stepper motor is used to move the secondary mirror in a 12.5" Cassegrain telescope. This mechanism can control movement to about 0.0001", resulting in very accurate focusing.
TELESCOPE MAKING #45 Summer 1991 pg. 6
Added Info TELESCOPE MAKING #46 Winter 1991-92 pg. 7