A 1.8-m lightweight Doubly Asymmetric Equatorial Telescope Design

Area of Science:

• Astronomy
• Optical Engineering
• Telescope Design

Background:

• Large astronomical telescopes often utilize complex active support systems for primary mirrors.
• Traditional telescope configurations can limit instrument space and structural symmetry.

Purpose of the Study:

• To present a novel telescope configuration optimized for lightweight monolithic mirrors.
• To introduce a simplified passive support system for primary mirrors in large telescopes.

Main Methods:

• Developed a telescope configuration with the primary mirror adjacent to the secondary mirror.
• Integrated a passive closed-system air flotation support for primary mirror lateral and back support.

Main Results:

• Achieved a cassegrain focus positioned very close to the declination axis.
• Enabled a large instrument space and a single south polar tyne, creating a doubly asymmetric system.
• Demonstrated the viability of a passive air flotation support system as an alternative to active systems.

Conclusions:

• The proposed telescope configuration offers advantages in compactness and instrument accessibility.
• Passive air flotation support presents a simpler and potentially more robust solution for large telescope mirrors.