DFM Engineering, Inc.
1035 Delaware Ave. Unit D
Longmont, CO 80501
Phone: 303-678-8143
Fax: 303-772-9411

Grant Gale Observatory at Grinnell College
Another satisfied customer

The Grinnell College Service Call

On June 13, 2001, the DFM maintenance team visited the Grant Gale Observatory at Grinnell College in Grinnell, Iowa to clean and adjust their DFM 24-inch telescope.

The telescope at Grinnell College was originally installed in November 1982.

In addition to the telescope, Grinnell has a DFM Guide Acquire Module (GAM), DFM Spectrograph, DFM dewar and Reticon Detector all controlled by a DFM eight axis controller.

Grant Gale Observatory

Mr. Ian Huss, our production manager, made the service call.

First, Ian cleaned the whole telescope. He then cleaned and lubricated the telescope's friction drives and inspected the drive cover seals for wear and damage.

Dr. Robert Cadmus, Observatory Director and Ian checked the optical collimation and refined the telescope control system's pointing model, which provided data to prove the telescope still points to 14 arc seconds RMS.

He has always taken the lead, upgrading his original control system first to the Macintosh PC and subsequently to the X-86 PC which is now DFM's standard system .

Dr. Cadmus is very active in his research, demanding that the telescope perform as advertised.

In 18 years, there have been very few failures at Grinnell, and Dr. Cadmus has been very pleased with the performance of his DFM telescope, control system and instrumentation.


Two things are important to note:

The 24 inch telescope is in routine use and is in very good working order.

DFM ENGINEERING, INC. stands behind their telescopes and their customers.