Sharpstar 2.5” F4.5 Full-frame Reducer Professional Astronomical Accessory Dedicated for 76EDPH Telescope
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Sharpstar 2.5” F4.5 Full-frame Reducer Professional Astronomical Accessory Dedicated for 76EDPH Telescope
Description:
- The 2.5" 76EDPH f/4.5 full-frame reducer is dedicated for 76EDPH astrograph. At one end of the reducer, there is M74x1 thread, tapped for the connection to the 76EDPH’s reducer and at the other end the reducer, there is M48x0.75 thread for the connection of most stock cameras.
- The back focus is 55mm after the attachment of a camera. The reducer is designed with a three-element air-spaced lens structure, supporting full-frame imaging, effectively controlling unwanted vignette. The practical focal ratio of the 76EDPH when used with this reducer is f/4.5, and the focal length can be shortened to 342mm. It’s preferred by many deep-sky astrophotographers.
- Another improvement is that the f/4.4 reducer is also designed with a 360-degree rotator, which is of great convenience for composition when imaging the deep-sky objects. The above-mentioned M48 thread is suitable for the connection for standard 2" filters.
Specification:
- Application: 76EDPH
- Focal ratio: f/4.5
- Image circle: 44mm
- Lens: three-element air-spaced structure
- Outer diameter: 88mm
- Back focus: 55mm
- Length: 77mm(including the M48 thread)
- Coating: full-surface multi-layer coating
- Weight: 0.5kg
Package Included:
- 1 x Reducer
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