astro.n-minus

OTA

Sharpstar 15028HNT-AL

Key specifications

Aperture150 mm
Focal length420 mm
Focal ratiof/2.8
Optical designNewtonian
Back focus55 mm
Weight4.8 kg

All specifications

Focuser typeDual-speed rack and pinion, 20 mm travel, rotator, built-in triplet corrector
Tube length443 mm
DovetailLosmandy

About

The aluminium-tube version of the 15028HNT: a 150 mm f/2.8 hyperbolic Newtonian astrograph on a PZ33 primary, with a triplet ED corrector built into the dual-speed rack-and-pinion focuser and a 70 mm secondary for full-frame illumination.