PlaneWave RC20 Telescope
Price as Configured: $57,500.00
PlaneWave Instruments PW20-RC, a 20 inch (0.51 m) telescope with Ritchey-Chrétien optics (f/6.8 RC optical tube, fused silica mirrors, focuser not included, Delta T ready). PlaneWave’s CDK astrographs have become the telescopes of choice for universities, industry, and astrophotographers around the world, and now PlaneWave offers the PW-RC series to meet the custom needs of the scientific community.
The PW20-RC in its native format (no field flattening lenses) uses only a primary and secondary mirror with reflective coatings. This can be useful when making observations primarily on-axis and wide field imaging is not a concern. The PW20-RC has a dual carbon-fibre truss design, with 3 cooling fans ejecting air from the back of the telescope. The instrument weight is 64 kg and comes standard with a back plate retaining ring ready to accept the focuser of your choice.
NOTE: Shipping cost will be determined after the order is made and must be paid for before the telescope will ship. A shipping quote can be obtained on request.
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Optical system
Aperture | 20" (508 mm) |
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Focal length | 3454 mm |
Focal ratio | f/6.8 |
Central obstruction | 39% of primary mirror diameter |
Backfocus from racked in focuser | 147 mm |
OTA length | 1194 mm |
Construction | Carbon fibre truss and light shroud |
Weight | 63.5 kg |
Primary mirror
Optical diameter | 508 mm |
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Outer diameter | 521 mm |
Material | Precision Annealed Borosilicate or Fused Silica |
Shape | Hyperbolic |
Coating | Enhanced aluminium - 96% |
Secondary mirror
Diameter | 191 mm |
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Material | Precision Annealed Borosilicate |
Shape | Hyperbolic |
Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700nm) |