Askar FMA180 Pro Sextuplet Astrograph

Name: Askar FMA180 Pro Sextuplet Astrograph
Brand: Askar

Askar

Askar FMA 180 Pro 40mm f/4.5 Sextuplet APO Lens / Astrograph is an optical tube for general deep-sky imaging and visual observing.

lens midrange

Best Current Offer

High Point Scientific

In stock

$439.00

Other retailers

Starizona (In stock)
$439.00
Telescopes.net (Unknown)
Offer

Specifications

Optics

Optical design: APO refractor
Aperture: 40 mm
Focal length: 180 mm with reducer; 220 mm native objective
Focal ratio: f/4.5 with reducer; f/5.5 native
Dawes limit: 2.9"

Astrophotography Fit

Best for general deep-sky imaging and visual observing when the mount, camera format, and correction hardware are chosen as one system.

Askar FMA 180 Pro 40mm f/4.5 Sextuplet APO Lens / Astrograph sits in the telescope slot for general deep-sky imaging and visual observing. The important buying question is whether the optical design, focal length, and mount demands match the targets you actually shoot.

Fast astrographs collect signal quickly, but they are unforgiving: collimation, tilt, filter behavior, and back-focus spacing show up immediately in star shapes.

Best paired with

Rigid focuser, tilt adjuster, and exact corrector spacing
Cooled cameras with a sensor inside the corrected image circle
High-throughput filters that behave well at fast focal ratios

Not recommended for

Users who do not want to tune collimation, tilt, and spacing
Thick or narrow filters that show strong bandpass shift at fast focal ratios
Loose camera adapters or focusers that cannot hold the imaging train square

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
High Point Scientific High Point Scientific	$439.00	In stock Updated 9/19/2026	View Offer - $439.00
Starizona Starizona	$439.00	In stock Updated 9/20/2026	View Offer - $439.00
Telescopes.net Telescopes.net	Not tracked yet	Unknown Updated 9/20/2026	View Offer

Price History

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

High Point Scientific Starizona