More products from the brand :Sharpstar

Newton Askar 150mm HNT-AL f/2.8 astrograph

5,0/558 Google reviews for DSA Retrieved on October 27, 2026
Don't miss this exceptional promotion on this wide-field Astrograph

Original price was: CHF 1'799.00.Current price is: CHF 1'639.00.incl. Swiss VATCHF 1'799.00

Reference SCOPE-0003

  • Will be ordered for you
    Delivery time: 5 to 7 business days
    Estimated shipping: Between November 9 and 10, 2026

Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 9 and 10, 2026

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2 recommended products for this model

Sharpstar 15028HNT-AL - the f/2.8 hyperbolic astrograph that brings out the light

Designed for high-resolution imaging, the 15028HNT-AL concentrates a 150 mm hyperbolic primary mirror and a triplet corrector integrated into a compact aluminum tube. At f/2.8, it captures as many photons in half the time than an f/4 tube - enough to multiply wide-field projects with complete peace of mind.

For example:

长友气体

Ultra-fast & full-format optics

  • Hyperbolic primary mirror in PZ33 (Pyrex-like) Ø150 mm, reflectivity ≈ 97 % (multi-layer dielectric coating).
  • Focal length 420 mm (f/2.8)a field wide angle of 6°, easily illuminating an image circle of 44 mm (full format).
  • Corrector triplet air-spaced (including 1 ED lens) housed in the eyepiece holder: fine stars and coma eliminated right down to the corners.
  • Secondary Ø70 mm (minor axis) for even illumination on 24×36 sensors.

长友气体

Robust & precise mechanics

  • Tube and CNC parts in all-aluminumreinforced rings with oversized butterfly screws.
  • Lens holder rack-&-pinion 2″ dual-speed (20 mm stroke) + (20 mm stroke) + (20 mm stroke) + (20 mm stroke) 360° rotator integrated, 3 kg capacity.
  • Easy collimation : 3×3 primary adjusting screws + one-piece CNC secondary spider for sharp egrets.
  • Losmandy 200 mm base plate and 200 mm handle included; side-mounted finder base for accessories.

Nomadic but powerful

  • Length : 443mm - Ø : 193 mm - OTA weight : 4.8 kg (6 kg with rings & dovetail).
  • Back-focus 55 mm (from M48 thread): compatible with SLR, hybrid and astro cameras.
  • Visual magnitude limit 12.7 - Theoretical resolution 0.77″.

With the Sharpstar 15028HNT-ALGo light speed: immortalize diffuse nebulae, isolated galaxies or complex stellar fields in record time.

 

Technical specifications

Optical type
Newton
Diameter
150 mm
Focal length
420 mm
Focal Ratio (f/D)
f/2.8
Separating power
0.77″
Backfocus
55 mm
Illuminated Field
44 mm
Corrector / Reducer Available
Yes
Tube length
44.3 cm
Tube weight
4.8 kg
Uses
Deep Sky, Astrophotography

How to Care for Your Instrument

Here are a few accessories we've selected for this model, depending on your needs.

No documents are available at this time.
Qu'est-ce qu'on peut voir avec le Newton Askar HNT-AL 150 mm ?

With a 150 mm aperture at f/2.8 and a focal length of 420 mm, it is primarily an astrophotography instrument: when paired with a camera, it is designed to photograph large nebulae, the Milky Way, and massive clusters across a very wide field of view.

Is it easy to carry?

Yes, it's a lightweight instrument: the tube weighs about 4.8 kg and is about 44.3 cm long.

Should we aim it at him?

Yes, and with care: in astrophotography, an open-aperture Newtonian telescope at f/2.8 requires precise collimation. A collimation laser simplifies the adjustment process.

Can we take pictures?

Yes, that’s what it’s designed for: it mounts on a motorized equatorial mount (not included) with an astro camera or a regular camera. With an aperture of f/2.8, it gathers light very quickly, so exposure times remain short. With a tube weighing approximately 4.8 kg (without accessories), choose a mount with a load capacity that leaves some margin.

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