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For many years, the "D Files" was a semi-regular column in the DAS newsletter, The Denver Observer. Members of our society submitted articles about their scopes and/or equipment. The equipment that they wrote about did not have to be completely home-built. The articles could be reviews, experiences, or modifications of equipment that was store-bought. Many of these original articles are made available below.
The original D-Files will be augmented with recent articles from the Observer on astronomical observing techniques and lore, equipment, and ATM projects, as well as technical articles contributed by DAS members.
Some of these articles are PDF documents. You will need the free PDF reader to download them. If you need a PDF reader, click the link below:
Available Articles

Clifford A. Brown

Chuck Carlson

Darrell Dodge

Jack Eastman

Edgar Everhart

Tim Geoghegan

Ron Mickle

Ron Pearson

David Shouldice

Dave Trott's Web Site

The following articles are no longer available online.
If you have a copy, please send it to the Webmaster.

Terry Chatterton's SCT modifications
Bert Harless' reflector modifications
Bert Harless' reflector modifications, part 2
Dale Keller's Amateur Telescope Making Site
BinoQuest, an Epic Optics Adventure, by Pat Ryan (PDF) 

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The Denver Astronomical Society