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The ESO Off-line Telescope Testing Technique Illustrated with Results for the MPIA 2.2 m Telescope II

Published online by Cambridge University Press:  12 April 2016

R.N. Wilson
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, D-8046 Garching
F. Franza
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, D-8046 Garching
L. Noethe
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, D-8046 Garching
M. Tarenghi
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, D-8046 Garching

Extract

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The ESO test device is based on the proposal of Shack

Fig. 1 shows the principle of this method, which we call the SHACKHARTMANN (S-H) method as it is derived from the well-known conventional Hartmann technique. The beam from the telescope focus (6) is transmitted by a beam-splitting cube (2) of high quality to a collimating (Fabry) doublet objective (3). This images the exit pupil of the telescope to the plane (4) where a special SHACK lenticular raster is inserted. Each lens of this raster then forms a point image of that part of the parallel beam incident upon it on to a photographic plate (5) placed at the focal distance of the raster lenses from (4). The angular aberration in the telescope image is thus transferred through the system and shows as a transverse displacement of the spots.

Type
II. Mirrors and Domes
Copyright
Copyright © ESO 1984

References

1. Platt, B. and Shack, R.V., Optical Sciences Center Newsletter, Univ. of Arizona, Tucson, 5(1), 15 (1971).Google Scholar
2. Loibl, B., Astron. & Astrophys. 91, 265 (1980).Google Scholar
3. Gale, M.T. and Knop, K., SPIE International Conference, Geneva, April 1983, Conference volume 398–56.Google Scholar
4. Franza, F., Le Luyer, M. and Wilson, R.N., “3.6 m Telescope: The adjustment and test on the sky of the PF optics with the Gascolgne plate correctors”, ESO Technical Report No. 8, Oct. 1977.Google Scholar
5. Wilson, R.N., Optica Acta 29(7), 985 (1982).CrossRefGoogle Scholar
6. Bahner, K., Private communication.Google Scholar
7. Kühne, C., Astron. & Astrophys. 41, 345 (1975).Google Scholar