William Optics Gran Turismo 71

Name: William Optics Gran Turismo 71
Brand: William Optics

William Optics

William Optics Gran Turismo 71 is a 71 mm Triplet APO refractor for wide-to-mid-field nebulae and general deep-sky imaging.

telescope midrange

Best Current Offer

Mile High Astronomy

In stock

$933.00

Other retailers

Cloud Break Optics (In stock)
$1,098.00

Specifications

Optics

Optical design: Triplet APO refractor
Aperture: 71 mm
Focal length: 419 mm
Focal ratio: f/5.9
Dawes limit: 1.63"
Glass / elements: Triplet APO objective

Imaging

Image circle: 45 mm
Camera format: Full frame / APS-C / Micro 4/3 with corrector
Full-frame coverage: Yes
Back focus: Depends on selected William Optics flattener/reducer
Reducer / flattener: Optional 0.8× reducer / flatteners available

Astrophotography Fit

Best for wide-to-mid-field nebulae and general deep-sky imaging when the mount, camera format, and correction hardware are chosen as one system.

William Optics Gran Turismo 71 sits in the telescope slot for wide-to-mid-field nebulae and general deep-sky imaging. The useful headline specs are aperture 71 mm, focal length 419 mm, f/5.9.

Camera coverage: Full frame / APS-C / Micro 4/3 with corrector. Image circle: 45 mm. Back focus: Depends on selected William Optics flattener/reducer.

Refractors keep the field routine calmer: no regular collimation, predictable cooldown, and a clean path to autofocus and filtered imaging. The tradeoff is aperture and reach.

Best paired with

Corrected field flattener or reducer when the design requires one
Cooled APS-C or smaller astro cameras matched to the image circle
Autofocus, guide scope or OAG, and a mount with comfortable payload margin

Not recommended for

Large full-frame sensors unless the corrected field supports them
Very small travel mounts near their realistic imaging payload limit
Buyers expecting one telescope to be ideal for every target size

Where To Buy

Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.

Retailer	Price	Availability	View Offer
Mile High Astronomy Mile High Astronomy	$933.00	In stock Updated 9/20/2026	View Offer - $933.00
Cloud Break Optics Cloud Break Optics	$1,098.00	In stock Updated 9/19/2026	View Offer - $1,098.00

Price History

Chronological retailer pricing with out-of-stock points shown at reduced opacity.

Cloud Break Optics Mile High Astronomy