Astronz 8" f/12 Cassegrain Telescope OTA

Cassegrain telescopes combine the benefits of a Newtonian telescope being a pure reflective system with a short-built design. In terms of optical quality Cassegrain telescopes are superior to customary Schmidt-Cassegrain systems. 

Note: The tubes are now white in colour.

Features

• Large corrected and illuminated image field due to parabolic primary and hyperbolic secondary mirror with less field curvature than with SC telescopes.
• Pure reflection system without Schmidt plate, as a result even Infrared photography becomes possible at full sharpness.
• Significantly quicker temperature adaption than a SC, due to open design.
  - Brighter image due to 99% dielectric coating on primary and secondary mirror.
  - No shifting, because the primary mirror is fixated
  - High-quality 2" Crayford focuser with micro-gear reduction and compression rings for 2" and 1.25" accessories
  - 33% obstruction caused by secondary mirror, comparable to SC telescopes.
  - Better sharpness on the optical axis due to precise mirror surfaces and the lack of a Schmidt plate
  - Less problems from dew: with Schmidt-Cassegrains you get condensation on the front plate, not with a Cassegrain
  -  Interior baffles for even higher contrast
  - Generous backfocus allowing the use of 2" accessories.
  - Compact tube with only 580 mm length - can be operated with smaller mounts
  - Primary and secondary mirror are adjustable

This item is shipped by our freighter as it is too large to ship by courier.

Normal shipping is for pickup at StraitNZ depot or a main city business address. Shipping to smaller towns and residential addresses may incur additional shipping charges. Shipping to rural addresses is not available. See here for depot locations.

If you are unsure about shipping options, please contact us for more information.