Askar 65PHQ The Askar 65PHQ combines a 65 mm aperture with 416 mm focal length at f/6.4. Its air-spaced quintuplet optical system contains two ED elements and incorporates field correction for a 44 mm image circle.
Manufacturer model: Askar 65PHQ · Specifications checked against manufacturer data on 2026-11-04
The Askar 65PHQ combines a 65 mm aperture with 416 mm focal length at f/6.4. Its air-spaced quintuplet optical system contains two ED elements and incorporates field correction for a 44 mm image circle.
Imaging and visual use
At native focal length the optical system does not need an additional field flattener or a single prescribed flattener-to-sensor spacing. Connect the camera within the published accessory-connection limit and bring the target into focus. The connection allowance changes with the chosen rear adapter. Visual use is also supported with a suitable diagonal and eyepiece.
Focusing and camera orientation
A 2.5-inch rack-and-pinion focuser provides coarse adjustment and 1:10 fine focusing. The graduated 360° rotator lets you frame the target without turning the complete telescope. Threaded photographic adapters provide the interfaces listed below, including an internal M48×0.75 filter thread.
Mounting and supplied equipment
The telescope has a retractable dew shield, tube rings, a multifunction handle and a 300 mm Vixen-style dovetail plate. The technical table separates bare-OTA weight from weight with mounting hardware. A matching 0.75× reducer is optional and has its own connection and spacing requirements; it is not part of the standard native optical system.
The specification table and detailed optical description identify a quintuplet with two ED elements; one promotional icon incorrectly says quadruplet.
Additional specifications
Length configurations
328mm（including 1.25" eyepiece holder as dew shield contracted） 388mm（including 1.25" eyepiece holder as dew shield fully stretched） 360mm（including the 3-piece adapter as dew shield contracted） 420mm（including the 3-piece adapter as dew shield fully stretched）
90957
Datasheet
Opening
65mm
Cameraschroefdraad
M48×0.75
Dauwkap
Retractable
Zwaluwstaart
300 mm Vixen-style
Veldcorrectie
Integrated; no additional flattener required at native focal length
Filterschroefdraad
M48×0.75 inside final adapter
Overbrenging fijnfocus
1:10
Brandpuntsafstand
416mm
Openingsverhouding
f/6.4
Focuser
2.5-inch rack-and-pinion, dual speed
Beeldcirkel
44mm
Standaardpakket fabrikant
A 65PHQ OTA, a pair of tube rings, a handle, Askar 300mm Vixen-style dovetail plate, a set of 3-piece photographic adapters, a manual
Maximale accessoire-aansluiting met ingeschoven focuser
Imaging mode 76mm（from the base of M48×0.75 male thread） 105mm（from the base of M54×0.75 male thread） 130mm（from the base of M68×1 male thread）; Observing mode 121mm（from the end of 2" eyepiece holder）
Model
65PHQ
Optisch ontwerp
Quintuplet air-spaced APO (including two ED glasses)
Askar 65PHQ The Askar 65PHQ combines a 65 mm aperture with 416 mm focal length at f/6.4. Its air-spaced quintuplet optical system contains two ED elements and incorporates field correction for a 44 mm image circle.
Manufacturer model: Askar 65PHQ · Specifications checked against manufacturer data on 2026-11-04
