3.2\" (81mm) dual-speed rack-and-pinion, 10:1 fine focus ratio
Imaging
Image circle
44 mm
Camera format
Full frame / APS-C / Micro 4/3
Full-frame coverage
Yes
Back focus
Built-in field correction; no separate flattener spacing
Corrected field
Native flat imaging field
Astrophotography Fit
Best for general deep-sky imaging and visual observing when the mount, camera format, and correction hardware are chosen as one system.
Astro-Tech AT86EDQ sits in the telescope slot for general deep-sky imaging and visual observing. The useful headline specs are aperture 86 mm, focal length 602 mm, f/7.
Camera coverage: Full frame / APS-C / Micro 4/3. Image circle: 44 mm. Back focus: Built-in field correction; no separate flattener spacing.
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.
