61EDPHⅢ f/4.4 Full-Frame Reducer

The special full-frame reducer of 61EDPH Ⅲ: One end of the thread is M68 × 1, connected to the focuser; the other end of the thread is M48 × 0.75 and has a built-in 2" filter thread.

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Product introduction

The special full-frame reducer of 61EDPH Ⅲ: One end of the thread is M68 × 1, connected to the focuser; the other end of the thread is M48 × 0.75 and has a built-in 2" filter thread. The back focus is 55mm. If it needs to be extended, the adapter can be screwed down to reveal the M54 × 0.75 male thread, and the back focus becomes 75mm. The focuser adopts a quadruplet air-spaced structure, supporting full-frame imaging. With the reducer, the focal ratio of 61EDPHⅢ is reduced to F4.4 and the focal length is reduced to 270mm, making the telescope the first choice for deep sky astrophotography.

Specifications

61EDPHⅢ f/4.5 full-frame reducer Parameters

Application

61EDPHⅢ

Focal ratio

f/4.4

Image circle

44mm

Lens

quadruplet air-spaced structure

Back focus

55mm(including the M48 thread)

Coating

full-surface multi-layer coating

Weight

0.4kg

Video

Images

Guillaume Rld  |  NGC1909  |  Sharpstar 61EDPH III + 61EDPHⅢ f/4.4 Full-Frame Reducer + ZWO ASI2600MC Pro

Guillaume Rld  |  M42_IC435  |  Sharpstar 61EDPH III + 61EDPHⅢ f/4.4 Full-Frame Reducer + ZWO ASI2600MC Pro

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