Vixen

Vixen SD81S II Telescope Optical Tube Assemble (OTA)

VX26083

$2,099.00
/
Tax included. Shipping calculated at checkout.
  • In store:
  • In stock at supplier, allow 5+ days
  • Special order, allow 5+ days
  • Out of stock at supplier, enquire with store

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The Vixen SD81S II Telescope Optical Tube Assemble (OTA) is out of stock at every supplier we deal with. These are in stock or available to order now.

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Indent order. Ordered in for you from our supplier and paid in full (100%) at order. The expected date is the supplier's estimate and can move; we'll email you if it changes. Indent orders can't be returned for change of mind, and a cancellation is refunded less any costs already incurred. See our Payment, Deposits and Orders and Refunds policies. Your consumer guarantee rights are not affected.

The Vixen SD81SII Optical Tube Assembly is an 81 mm SD apochromatic refractor optical tube for both visual observing and astrophotography. A ring spacer around the objective gives more even star diffraction patterns, and optional SD reducer or flattener kits enhance imaging performance.

Key Features

  • The SD lens suppresses residual chromatic aberration far below the threshold of visibility
  • Full-frame imaging with a DSLR camera

Specifications

  • Objective lens, effective aperture: 81mm SD (Super ED) apohromatic, multicoated
  • Focal length: 625mm
  • Focal ratio: F7.7
  • Resolving power: 1.43 arc seconds
  • Limiting magnitude: 11.3
  • Light gathering power: 134×unaided eye
  • Focusing mechanism: Rack-and-pinion, with lock knob
  • Finder scope: XY Red dot finder II (1×aimimg device)
  • Adapter thread / Visual back: 60mm and 42mm for T-ring / 50.8mm and 31.7mm push fit with flip mirror diagonal
  • Accessories: Tube rings, Dovetail tube plate, Metal carry handle
  • Photography: Usable with Prime focus, Eyepiece projection and Afocal imaging
  • Solar observation: Available with Sun projection screen set B
  • Dimensions / weight: 90mm dia. and 585mm long / 3.6kg (Net 2.3kg)

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