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

This telescope will be checked, measured and adjusted if necessary before delivery. The focuser will be calibrated.

Examples of our test protocols: Testaufnahmen
How we calibrate: Über uns

We ship this telescope with free shipping in Germany.

 

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 a triplet air-spaced 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.

 

Objective lens:	Air-spaced triplet apo（including two ED glasses）
Aperture:	50 mm
Focal length:	275 mm (230 mm with optional reducer)
Focal ratio:	f/5.5 (f/4.6 with optional reducer)
Limiting visual magnitude:	10.3
Focuser:	Dual-speed rack-and-pinion precision focuser, 360 rotatable
Adjustment range of the focuser:	60 mm
Back side connections:	M48x1 male thread, 1.25" via adapter
Back focus with optional reducer:	55 mm
Finder shoe:	For Vixen type finder brackets
Dew shield:	Retractable
Mounting options:	Vixen style dovetail bar (70 mm) with two 1/4-20 photo threads and six M6 threads
Tube material:	Aluminum
Tube length with cap:	196 mm（dew shield retracted）
Maximum diameter:	72 mm with cap
OTA weight (with rings and dovetail):	1.0 kg

♦ SharpStar 50EDPH triplet APO refractor
♦ 2x M48 extender, 5 cm length each
♦ Eyepiece adapter 1.25"
♦ Covers
♦ Finder Shoe
♦ Tube Ring with dovetail plate


The Sharpstar 50EDPH is a high-quality, versatile portable small aperture astrograph. It has a 50 mm aperture, a 275 mm focal length, and a f/5.5 native focal ratio 123. It is a triplet-apochromatic refractor with an air-spaced triplet that contains two ED glasses 1. 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 123. It comes with a 2-inch RAP focuser that has a 360°-rotator and a 1.25" adapter for visual observation 1. The Sharpstar 50EDPH is suitable for both astro-photography and visual observation