Sharpstar 61EDPH III Full-frame Flattener Lens Triplet Air-spaced Structure for Astronomical Telescope

Sharpstar 61EDPH III Full-frame Flattener Lens Triplet Air-spaced Structure for Astronomical Telescope

Description:
- The flattener: One end of the thread is M68 x 1, connected to the focuser; the other end of the thread is M48 x 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 x 0.75 male thread, and the back focus becomes 81.5mm. The flattener adopts a triplet air-spaced structure, the peripheral light reduction control is excellent, can effectively improve the curvature of the field, improve the corner image quality, and reduce aberrations, so that users can take clearer astronomical photos.

Specification:
- Application: 61EDPHⅢ
- Image circle: 44mm
- Lens: triplet air-spaced structure
- Back focus: 55mm (including the M48 thread)
- Coating: full-surface multi-layer coating
- Weight: 0.4kg

Package Included:
- 1 x Focal Reducer