Sharpstar 0.8x Reducer and Flattener for Full Frame Cameras for Sharpstar 61EDPH / 61EDPHII Telescope
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The Sharpstar 61EDPH F/4.5 is the latest development in dedicated full-frame focal reducers. Designed to work with the Sharpstar 61EDPH and 61EDPHII f/5.5 apochromatic refractors, this 0.8x reducer and flattener meets the needs of demanding astrophotographers who use cameras with up to full-frame sensors for wide-field deep-sky imaging.
This focal reducer features a triplet air-spaced structure and large optics that achieve excellent field flatness and illumination over a 44mm image circle.
The 2.3" reducer’s drawtube has female M63×1 thread that attaches to the telescope’s focuser while the other end includes an external male M48×0.75 thread for a camera to ensure the 55mm back focus requirement is satisfied. The back focus can be extended to 99mm by unthreading the back adapter of the reducer which gives access to another M63x1 thread to attach additional accessories such as a filter wheel. The reducer also includes an internal female M48x0.75 thread for attaching a filter and a mechanism to rotate the attached camera by 360 degrees.
- Use for telescope model: Sharpstar 61EDPH/61EDPHII (NOT for use with 61EDPHIII)
- Reducing Focal Ratio: F/4.5
- Fully Illuminated Image Circle: 44mm
- Number of Lens: Three-piece
- Main Outer Diameter: 66mm
- Focal Plane: 55mm (can expand to 99mm by removing the end interface)
- Total Length: 95mm (including M48 Thread)
- Surface Coating: Full-Surface Multi-Layer Coating
- Weight: 0.45kg
Other Information
- Country of Manufacture: China
The Sharpstar 61EDPH F/4.5 is the latest development in dedicated full-frame focal reducers. Designed to work with the Sharpstar 61EDPH and 61EDPHII f/5.5 apochromatic refractors, this 0.8x reducer and flattener meets the needs of demanding astrophotographers who use cameras with up to full-frame sensors for wide-field deep-sky imaging.
This focal reducer features a triplet air-spaced structure and large optics that achieve excellent field flatness and illumination over a 44mm image circle.
The 2.3" reducer’s drawtube has female M63×1 thread that attaches to the telescope’s focuser while the other end includes an external male M48×0.75 thread for a camera to ensure the 55mm back focus requirement is satisfied. The back focus can be extended to 99mm by unthreading the back adapter of the reducer which gives access to another M63x1 thread to attach additional accessories such as a filter wheel. The reducer also includes an internal female M48x0.75 thread for attaching a filter and a mechanism to rotate the attached camera by 360 degrees.
- Use for telescope model: Sharpstar 61EDPH/61EDPHII (NOT for use with 61EDPHIII)
- Reducing Focal Ratio: F/4.5
- Fully Illuminated Image Circle: 44mm
- Number of Lens: Three-piece
- Main Outer Diameter: 66mm
- Focal Plane: 55mm (can expand to 99mm by removing the end interface)
- Total Length: 95mm (including M48 Thread)
- Surface Coating: Full-Surface Multi-Layer Coating
- Weight: 0.45kg
The Sharpstar 61EDPH F/4.5 is the latest development in dedicated full-frame focal reducers. Designed to work with the Sharpstar 61EDPH and 61EDPHII f/5.5 apochromatic refractors, this 0.8x reducer and flattener meets the needs of demanding astrophotographers who use cameras with up to full-frame sensors for wide-field deep-sky imaging.
This focal reducer features a triplet air-spaced structure and large optics that achieve excellent field flatness and illumination over a 44mm image circle.
The 2.3" reducer’s drawtube has female M63×1 thread that attaches to the telescope’s focuser while the other end includes an external male M48×0.75 thread for a camera to ensure the 55mm back focus requirement is satisfied. The back focus can be extended to 99mm by unthreading the back adapter of the reducer which gives access to another M63x1 thread to attach additional accessories such as a filter wheel. The reducer also includes an internal female M48x0.75 thread for attaching a filter and a mechanism to rotate the attached camera by 360 degrees.
- Use for telescope model: Sharpstar 61EDPH/61EDPHII (NOT for use with 61EDPHIII)
- Reducing Focal Ratio: F/4.5
- Fully Illuminated Image Circle: 44mm
- Number of Lens: Three-piece
- Main Outer Diameter: 66mm
- Focal Plane: 55mm (can expand to 99mm by removing the end interface)
- Total Length: 95mm (including M48 Thread)
- Surface Coating: Full-Surface Multi-Layer Coating
- Weight: 0.45kg
Other Information
- Country of Manufacture: China