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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.
- 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.
- Astro-Rubinar is a Rubinar 1000 mm kit including oculars and a 90° prism for convenient use as a visual telescope.
- MTO (Russentonne) is a different related lens design, with a single Maksutov achromatic corrector. The Rubinar uses 2 milder such full aperture plates, being slightly shorter, lighter and ultimately better corrected, thanks to more decentering tolerance.
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