Newton Askar Astrograph 130mm HNT-AL f/2.8

Sharpstar 13028HNT - Newtonian Hyperbolic

The Sharpstar 13028HNT is an ultra-fast Newtonian hyperbolic telescope, designed for astronomers and astrophotographers looking for exceptional image quality in a compact, lightweight format. This model has won over a wide audience thanks to its impressive f/2.8 focal ratio, combining creativity and dynamism for an uncompromising visual experience.

Advanced Optical Features

• Opening diameter : 130 mm
• Focal length : 364 mm
• Focal report : f/2.8
• Primary mirror type : Hyperbolic reflective mirror
• Mirror material : PZ33 (similar to Pyrex glass) for high thermal stability
• Corrector : Dual-element refractive lenses, including ED glass, for optimal aberration correction

Durable, lightweight design

• Carbon fiber tube : Made of high-quality carbon fiber for exceptional strength and lightness
• Net weight : 3.2 kg
• Gross weight : 4.3 kg (with protective cap, tube rings, handle and Vixen dovetail)

Tune-up and compatibility with accessories

• Focus at 2.5 inches: Rack and pinion, with fine and coarse adjustment knobs for fast, precise focusing
• Thread : Compatibility with M63, with adapter to change to a larger M48x0.75 thread, facilitating the connection of various accessories
• Standard back-focus : 55 mm from the base of the mounting thread for quick and easy use

Versatile mounting and accessories

• Versatile handle: Easy handling and installation on various equatorial mounts
• Vixen-type dovetail : For easy, safe assembly
• Compact design : Ideal for users looking for a powerful telescope in a small format

Technical Specifications

• Minor axis of secondary mirror : 65 mm
• Field of view : 6.9 degrees
• Resolution: 0.89 arcseconds
• Limiting visual magnitude : 12.3
• Tube outer diameter : 174 mm

Conclusion

The Sharpstar 13028HNT represents the perfect blend of optical performance, build quality and light weight. With its hyperbolic mirror and f/2.8 focal ratio, it is ideal for astronomy enthusiasts who want to capture sharp, detailed images with reduced exposure time.