December 2000

Telescope Structure - Pointing
by Dr. Frank Melsheimer, President, DFM Engineering, Inc.

A thorough study in telescope pointing accuracy; identifying calculations for coordinate corrections, telescope corrections, and atmospheric refraction corrections, among other factors necessary to obtain optimal telescope pointing accuracy. Examples of pointing errors are examined and answers to gaining precision pointing are revealed.

• Pointing article

November 2000

Telescope Structure - Deflections
by Dr. Frank Melsheimer, President, DFM Engineering, Inc.

An expert critical analysis of the geometry (shape) of a part as it effects the deflection (stiffness) of the part and therefore, its direct impact on telescope performance.

• Deflections article

October 2000

Telescope Structure - Geometry
by Dr. Frank Melsheimer, President, DFM Engineering, Inc.

A functional evaluation of the stiffness effect of the shape or geometry of a part and its priority in telescope performance as it relates to material selection.

• Geometry article

September 2000

Telescope Structure - Steel vs. Aluminum
by Dr. Frank Melsheimer, President, DFM Engineering, Inc.

A practical study of material performance, stiffness to weight ratio, structural elements, size considerations and cost observations with direct regard to the fabrication and manufacturing process.

• Steel vs. Aluminum article