ETM-Telescope, Comparison of Off-axis Parabolic Telescope with Spherical Mirror Secondary, or Triplet Lens

Document #:

LIGO-T0900453-v2

Document type:

T - Technical notes

Abstract:

The purpose of this technical note is to describe the ellipticity and wavefront distortion of a parabolic telescope and a hybrid ETM Telescope, comprised of an off-axis parabolic primary mirror and a 1) spherical secondary mirror, or 2) triplet lens secondary. The telescope is part of the Transmon System for aLIGO.

Files in Document:

• T09000453-v2_Hybrid ETM-Tel.pdf (1.3 MB)

Topics:

• Auxiliary Optics
• Preliminary Design

Authors:

• Michael Smith

Keywords:

AOS ETM-TEL TRANSMON ISC

Notes and Changes:

Changed the title. Changed the abstract. Added triplet lens secondary case.

Referenced by:

• LIGO-E1000040-v2: Transmission Monitor Telescope and Suspension (TMS), Preliminary Design Document