Rubinar (Russian: Рубинар) is a Soviet lens design series developed and produced by JSC Lytkarino Plant of Optical Glass (LZOS). It is compact despite its long focal lengths.

Rubinar 1:5.6 500 mm

Rubinars can be used with proprietary mount cameras by using M42 adaptors. Focusing motors are absent though (manual only), and so are the variable apertures.

Variants

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Forsythia with characteristic donut shaped blur (Bokeh) due to the presence of the central obscuration in the catadioptric system. Focus on foreground. Rubinar 5,6/500
  • MC Rubinar - 1:8.0 500 mm
  • MC Rubinar - 1:4.5 300 mm
  • MC Rubinar - 1:5.6 500 mm
  • MC Rubinar - 1:10 1000 mm
  • Rubinars may be transformed into spotting scopes using an M42 Turist-FL ocular attachment and image redresser. Their optical arrangement gives flexibility in placing the focal plane and changing the focal ratio by mere refocus.[1]
  • Astro-Rubinar is a Rubinar 1000 mm kit including oculars and a 90° prism for convenient use as a visual telescope.[2]
  • MTO lenses by Soviet manufacturer KMZ[3] utilise a similar design, with a single Maksutov achromatic corrector.

References

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  1. ^ "Home page". rubinar1000.narod.ru.
  2. ^ "АСТРО-РУБИНАР 106/1000" [ASTRO-RUBINAR 106/1000]. Astronomy and telescope construction (in Russian)., (version in English)
  3. ^ Information about the KMZ Zenit MTO-500 and MTO-1000 mirror lenses. Retrieved 14 July 2019.
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