Altair Wave Series 125 EDF F7.8 APO Refractor with M92 Focuser

Product Description

A premium 5 inch class doublet Apo refractor with top quality SFPL-53 Synthetic Fluorite optics and a longer focal ratio for stunning performance, with a superb 3.7" Rack and Pinion focuser and sliding dewshield as standard. These optics are modified to achieve a higher quality images. Both the lens element spacing and the centration are set up to get the best balance between colour aberration and the best possible star-test. This process takes time but we believe this is a class leading model and superior to it's direct competitors, a dream refractor for serious visual observers. All Altair refractors are checked optically and tested and guaranteed to be in collimation - this extra level of assurance is provided at no cost to the customer. Astronomy Now magazine described this telescope as a Rolls Royce of refractors when reviewed.

The Altair Wave Series 125mm EDF F7.8 APO is a highly specified doublet APO refractor which offers plenty of aperture, portability and high resolution for the visual observer.

Distinctive features of the Altair 125mm ED refractor:
Better colour correction than any other ED Doublet in this size / focal range with faster cooldown than a triplet.
Optical test report, with every lens carefully adjusted to meet Strehl 0.95 minimum in more demanding green light. Tested over the full aperture of 125mm.
CNC 3" Rack 'n Pinion geared focuser with 2" and 1.25" adapter.
Optional Planostar 0.8x Reducer gives tight spot size over 40mm image circle suitable for astrophotography.
Optical tube weighs 8.3kg, well within the range of most mounts.

125mm EDF specification:
Aperture / Focal length: 125mm / 975mm. (780mm with PlanoStar 0.8x reducer).
Focal Ratio: F7.8. (F6.24 with PlanoStar 0.8x reducer).
Resolution: 0.93 arc seconds.
Limiting Visual Magnitude +12.6.
Highest Useful Magnification - 246x (atmospheric conditions permitting).
Air spaced ED Doublet APO lens with optical test report and interferogram image.
Fully multi coated on all optical surfaces for high transmission.
New 2022 3.7" Dual speed Rack 'n Pinion focuser with improved bearings, 170mm back-focus and 100mm travel. Full 360 degree rotation with Teflon tipped screws.
2" rear Self-Centring Adapter on focuser.
Aluminium tube with white matte powder-coat.
Retractable, lockable dew shield.
1:10 ratio micro focuser knob.
Optional 60mm Deluxe right angled finder scope with illuminated reticule.
CNC machined tube rings compatible with Altair TMS M6x30mm hole spacing. Felt lined.
Vixen-format dovetail bar.
1.25-2" adapter with brass compression ring.
Scope Weight - 7.9kg without accessories.
Scope Length 838mm with dew-shield retracted.

Please note - supplied with a Vixen format dovetail bar not a Losmandy style as pictured.

We have published an article explaining the merits of ED refractors, read about The ED Refractor Telescope.