Flat-field refractor technology
Quadruplet APO designs ensure sharp images across the entire frame.
Telescopes
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Askar
Askar Telescopes
Specializing in flat-field refractors and fast Newtonian astrographs, these instruments are built for high-end deep-sky astrophotography. These professional OTA designs provide the precision required for capturing crisp, wide-field celestial images
Best choice
Worth noticing
Fast Newtonian astrographs
F3.4 apertures allow for quick light collection during long exposures.
Professional OTA builds
Dedicated optical tube assemblies designed for advanced camera integration.
In this directory
Astrophotography Performance Standards
These listings highlight ED and SD glass refractors alongside Newtonian reflectors with apertures up to 210mm. The focus is on flat-field performance and fast focal ratios for deep-sky imaging.
- Quadruplet air-spaced APO refractors
- F3.4 Newtonian reflector astrographs
- ED and SD glass elements
- Vixen-style dovetail plates
- Flat-field optical designs
Built this way
Deep Sky Specialization
These models are specifically labeled as astrographs, meaning they are optimized for photography rather than just visual use.
Advanced Glass Elements
The use of ED (Extra-low Dispersion) and SD glass in the refractors helps eliminate color fringing in photos.
Fast Focal Ratios
The N160 and N210 reflectors feature an F3.4 ratio, which is exceptionally fast for capturing faint nebulae.
Mount Compatibility
Each OTA comes with a Vixen dovetail plate, making them ready to secure to professional equatorial mounts.
Catalog
Current telescopes from Askar
Portable 60mm flat field refractor telescope
Refractor telescopes · Portable · For deep sky · For astrophotography · 60mm aperture
Professional 50mm quadruplet apo astrograph
Refractor telescopes · Portable · Professional · For deep sky · For astrophotography
Mid size 71mm flat field refractor
Refractor telescopes · For deep sky · For astrophotography
Large 210mm Newtonian reflector astrograph
Reflector telescopes · Professional · For deep sky · For astrophotography
Compact 160mm Newtonian reflector astrograph
Reflector telescopes · For deep sky · For astrophotography
Notes
Notes from buyers
The 60F refractor provides a perfectly flat field that makes stars look like pinpoints to the very edge.
The N210 is a light-gathering powerhouse that has cut my exposure times down significantly.
The build quality of the 71F is excellent, and the quadruplet design handles color correction beautifully.
FAQ
Askar Questions
What is an astrograph?
An astrograph is a telescope specifically designed for astrophotography. These models, like the N160 and 71F, focus on providing a flat field and fast light collection for cameras.
What kind of glass do the refractors use?
The refractor models in this catalog use ED (Extra-low Dispersion) or SD glass. These materials are essential for professional quadruplet APO designs to ensure color accuracy.
How do the reflector models differ from the refractors?
The reflectors, such as the N210, are Newtonian astrographs with very fast F3.4 ratios for deep-sky work. The refractors are quadruplet air-spaced designs that prioritize a flat field.
Are these telescopes ready to mount?
Yes, these models include Vixen-style dovetail plates (ranging from 160mm to 230mm). This allows them to be easily attached to most standard astronomical mounts.