Manufacture and test procedures

Wilson, Raymond N.

doi:10.1007/978-3-662-08488-5_1

Cited by 2 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The advantage of this is that light absorption is reduced as the light passes through only four refractive elements and one reflective element. The design may not compete against complex TMAs, but still, is easier to manufacture and test as compared to the aspheres used in TMAs (Wilson 2013). Off‐axis configuration of all‐spherical refractive systems requires lens wedge to be purposely fabricated, increasing the complexity of the manufacturing.…”

Section: Introductionmentioning

confidence: 99%

An alternative, versatile, high‐tolerance design of a modified Richter–Slevogt camera, using standard glasses

Gadey

2024

Astron Nachr

View full text Add to dashboard Cite

Prime‐focus catadioptric astrographs have been used for a long time in various astronomical applications. The prime advantage offered by them is the capability to produce remarkably wide fields of view, and hence generate a huge amount of data in relatively less observation time. An emerging application of such wide‐field astrographs is in the form of telescope arrays. While this has been implemented mostly, using commercial refractive lenses, low‐cost catadioptric objectives can be used as an alternative for wide‐field or high‐contrast array applications. Commercial catadioptric systems are generally available as modifications of Schmidt and Maksutov systems, that too, mostly in the Cassegrain configuration. Here, we present a low‐cost alternative prime focus camera design of Richter–Slevogt configuration, which is in turn an extension of the Houghton correctors. The Richter–Slevogt design has the potential for a very high performance due to several degrees of freedom. The presented one is a 150 mm aperture, system, providing 3.5° (circular) diffraction‐limited FOV (strehl ), using only standard glasses, N‐BK7 and F2. We present the performance analysis, tolerance sensitivity, and statistical (Monte‐Carlo) analysis for this design. Potential applications of the system, other than as an array are also briefly discussed.

show abstract

Section: Introductionmentioning

confidence: 99%