Sharpstar 50EDPH 50 mm f/5.5 Triplet Apo with 2 inch RAP focuser

Sharpstar 50EDPH 50 mm f/5.5 Triplet Apochromat

The Sharpstar 50EDPH is a high-quality, versatile portable small aperture astrograph.

The Sharpstar 50EDPH is an OTA with a 50 mm aperture, 275 mm focal length, and f/5.5 native focal ratio.

The 50EDPH is compact and lightweight, with a gross weight of 1.0 kg (including the dovetail plate) and a total length of 196 mm.

With excellent optical quality, user-friendly mechanical design, and a size that can be grasped in one hand, the 50EDPH is a perfect choice for daily observation and shooting.

The 50EDPH is an air-spaced triplet APO design, including two pieces of ED glass. The triplet design is rare for a telescope of such a small aperture, and the chromatic aberration control is exceptional.

Mechanical features:

The Sharpstar 50EDPH has a retractable lens hood to further shorten the overall length and increase portability.

Before the focuser, Sharpstar 50EDPH design a 360° rotator, which is also equipped with a rotator locking screw.

The Sharpstar 50EDPH´s focuser is a dual-speed rack and pinion rigid focuser, with a 1:10 precision fine adjustment knob and an overall travel length of 60 mm.

The rear end of the Sharpstar 50EDPH is equipped with a 1.25" adapter, which can attach a 1.25" diagonal and eyepiece for visual observation.

The Sharpstar 50EDPH has a 70 mm long Vixen-style dovetail plate with 1/4-20 threaded holes, making it not only adapt to most equatorial mounts but can also be mounted on a tripod for use.

It is worth mentioning that the Sharpstar 50EDPH also comes standard with two sections of 5 cm long M48 extension tubes. The extension tubes can be connected to the eyepiece for visual observation instead of the diagonal, or to a planetary camera for planetary imaging.

Optional 0.84x reducer

The Sharpstar 50EDPH has an optional 0.84x reducer that can be chosen, the 0.84x reducer can bring the Sharpstar 50EDPH´s focal ratio down to f/4.6. This is a standard reducer with field flattening capabilities as well. The 50EDPH´s reducer supports the APS-C frame, The 0.8x reducer is equipped with an M48 adapter and comes with a built-in M48*0.75 (2") filter thread for direct filter mounting.

Small size and big function, easy to put the exploration into your pocket. Hope you can enjoy the mysteries of the universe with the Sharpstar 50EDPH anytime, anywhere.

Photographs by a customer

Our customer Nick Niebergall from Schwerin (Germany) has taken four beautiful astro images with this telescope and a ZWO ASI533MC Pro, which we would like to share with you:

Object: Andromeda Galaxy (M 31)

Telescope: Sharpstar 50EDPH (50EDPH)
Camera: ZWO ASI533MC Pro (ASI533MC-P)


Object: North Amrica Nebula (NGC 7000)

Telescope: Sharpstar 50EDPH (50EDPH)
Camera: ZWO ASI533MC Pro (ASI533MC-P)


Object: A spiral galaxy

Telescope: Sharpstar 50EDPH (50EDPH)
Camera: ZWO ASI533MC Pro (ASI533MC-P)


Object: A vast nebula region

Telescope: Sharpstar 50EDPH (50EDPH)
Camera: ZWO ASI533MC Pro (ASI533MC-P)

We congratulate Nick Niebergall on these great results!

Safety informations: PDF Download