Sharpstar - 50EDPH f/5.5 ED Triplet APO Refractor Optical Tube Assembly

SKU
SRP-50EDPH
$399.00
Availability : Pre-Order
Free Shipping Available

The Sharpstar 50EDPH is a compact and lightweight optical tube assembly with a 50mm aperture, 275mm focal length, and a native focal ratio of f/5.5. Including the dovetail, it has a weight of only 1kg, and when the dew shield is contracted, its measured length is a modest 196mm. To ensure precise and accurate color reproduction, the 50EDPH consists of a triplet air-spaced apochromatic design, featuring two pieces of ED glass.

Sharpstar 50EDPH f/5.5 ED Triplet APO Refractor Optical Tube Assembly

50EDPH Triplet APO Features

Small and Lightweight Design for Visual and Imaging Purposes

The Sharpstar 50EDPH stands is a small, compact and lightweight 50mm optical tube assembly with a 275mm focal length, and a native focal ratio of f/5.5. With the dovetail included, it only weighs 1kg and its measured length is a small 196mm with the dew shield contracted. This means it can easily be attached to most mounts and tripods with its V style dovetail that has 1/4-20 holes.

To ensure sharp and color accurate results, the 50EDPH features two pieces of ED glass in a triplet air spaced apochromatic design. Since chromatic aberration is notorious for resulting in false color, this in particular helps imagers obtain well resolved frames and exposures.

Dual Speed Focuser and 360° Rotator

The Sharpstar 50EDPH comes with a 360° rotator and a dual speed Rack and Pinion focuser that can be locked with a screw for precise focusing.  The focuser has a 1:10 precision fine adjustment knob with 60mm of travel length.

Attach a Diagonal or a Camera with Extension Tubes to Rear of 50EDPH

With a 1.25" adapter at the rear of the 50EDPH, a diagonal can be attached easily for visual observation. However, Sharpstar has included two sections of 5cm M48 extension tubes which can connect to the eyepiece directly instead of through a diagonal or connected to a planetary camera for imaging.

Supports up to Crop Sensor and Optional Reducer/Flattener

For imaging enthusiasts who want an easy to use setup, the Sharpstar 50EDPH's image circle can support up to a crop sensor camera (APS-C). Coupled with an optional (sold separately NOT included) Sharpstar 0.84x Reducer and Flattener, the focal ratio is lowered to f/4.6 making wide field observing within reach! The reducer comes with an M48 adapter and comes with a built in M48x0.75 2" filter thread for direct mounting.

More Information
Brand Sharpstar Optics
Free Shipping Free Shipping Available
Aperture 50mm
Case Included No
Focal Length 275mm
Focal Ratio f/5.5
Focus Type Dual speed Rack and Pinion
In The Box
  • Sharpstar 50EDPH f/5.5 ED Triplet APO Refractor Optical Tube Assembly
  • Sharpstar 50EDPH f/5.5 ED Triplet APO Refractor Optical Tube Assembly
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