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Proceedings Paper

Using the DP-190 glue for adhesive attachment of a large space mirror and its rim
Author(s): Oleg Vlasenko; Alexey Zverev; Mikhail Sachkov
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Paper Abstract

The glue DP-190 is widely used for adhesive attachment of astrositall (zerodur) lightweight large-size space astronomical mirrors (diameter of 1.7 m and more) with elements of their frames of invar. Peculiarities of physicalmechanical behavior of the glue DP-190 when exposed to the environment during the ground operation and in orbit cause instability of the reflective surface quality of mirrors. In this report we show that even a small (around 1%-5%) volumetric deformation of a cylindrical adhesive layer with a thickness of 0.8 mm between the mirror and the rim element causes significant mirrors deformation. We propose to use adhesive layer of special form that allows to reduce volumetric deformations of the glue DP-190 up to three times. Here we present results based on primary mirror tests of the WSO-UV project.

Paper Details

Date Published: 18 July 2014
PDF: 6 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91513I (18 July 2014); doi: 10.1117/12.2055729
Show Author Affiliations
Oleg Vlasenko, Institute of Astronomy (Russian Federation)
Alexey Zverev, Institute of Astronomy (Russian Federation)
Mikhail Sachkov, Institute of Astronomy (Russian Federation)

Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)

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