Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-07-26
Astropart.Phys.24:382-390,2005
Astronomy and Astrophysics
Astrophysics
18 pages, 10 figures. Changed version contains all figures in eps format
Scientific paper
10.1016/j.astropartphys.2005.08.
By means of third-order optical theory as well as ray-tracing simulations we have investigated the feasibility of wide-field imaging atmospheric Cherenkov telescopes with a reflective prime-focus design. For a range of desired optical resolutions, we have determined the largest available field-of-view of single-piece spherical, single-piece parabolic, tessellated spherical, tessellated parabolic and Davies-Cotton designs, always considering a wide range of design parameters. The Davies-Cotton design exhibits a surprising similarity to the tessellated parabolic design in its qualitative behaviour. Also, elliptic telescope designs with better off-axis imaging properties than Davies-Cotton are presented. We show that by using f/2 optics it is possible to build prime-focus telescopes with a full field-of-view of 10 degree at 0.1 degree resolution.
Mirzoyan Razmick
Schliesser Albert
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