Sharpstar 1.0x Full-frame Flattener / .75x F4.4 Full-frame Reducer Professional Astronomical Accessory Dedicated for 61EDPH III Telescope
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Sharpstar 1.0x Full-frame Flattener Professional Astronomical Accessory Dedicated for 61EDPH III 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: 61EDPH III
- 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 Flattener
Sharpstar 0.75x F4.4 Full-frame Reducer Professional Astronomical Accessory Dedicated for 61EDPH III Telescope
Description:
- The special full-frame reducer of 61EDPH III: 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 75mm. The focuser adopts a quadruplet air-spaced structure, supporting full-frame imaging. With the reducer, the focal ratio of 61EDPH III is reduced to F4.4 and the focal length is reduced to 270mm, making the telescope the first choice for deep sky astrophotography.
Specification:
- Application: 61EDPH III
- 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
Package Included:
- 1 x Reducer
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