94EDPH f/4.4 Full-Frame Reducer
Category： Discontinued
The 2.5" 94EDPH f/4.4 full-frame reducer is dedicated for Sharpstar 94EDPH astrograph. At one end of the reducer, there is M74×1 thread, tapped for the connection to the 94EDPH’s reducer and at the other end the reducer, there is M48×0.75 thread for the connection of most stock cameras. The back focus is 55mm after the attachment of a camera.
Retail Price:
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Retail Price:
¥ 55542
库存剩余
465465123
Upon package arrival, expect to pay customs duties and VAT to customs.
- Product introduction
- Product introduction
- Specifications
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- Commodity name: 94EDPH f/4.4 Full-Frame Reducer
- Commodity ID: 94EDPH f/4.4 Full-Frame Reducer
The 2.5" 94EDPH f/4.4 full-frame reducer is dedicated for Sharpstar 94EDPH astrograph. At one end of the reducer, there is M74×1 thread, tapped for the connection to the 94EDPH’s reducer and at the other end the reducer, there is M48×0.75 thread for the connection of most stock cameras. The back focus is 55mm after the attachment of a camera.
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The 2.5" 94EDPH f/4.4 full-frame reducer is dedicated for Sharpstar 94EDPH astrograph. At one end of the reducer, there is M74×1 thread, tapped for the connection to the 94EDPH’s reducer and at the other end the reducer, there is M48×0.75 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 four-element air-spaced lens structure, supporting full-frame imaging and the image circle reaches 50mm, effectively controlling unwanted vignette. The practical focal ratio of the Sharpstar 94EDPH when used with this reducer is f/4.4, and the focal length can be shortened to 414mm. 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.
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94EDPH f/4.4 full-frame reducer Parameters
Application
94EDPH
Focal ratio
f/4.4
Image circle
50mm
Lens
four-element air-spaced structure
Outer diameter
88mm
Back focus
55mm
Length
105mm
Coating
full-surface multi-layer coating
Weight
0.67kg
Product introduction
The 2.5" 94EDPH f/4.4 full-frame reducer is dedicated for Sharpstar 94EDPH astrograph. At one end of the reducer, there is M74×1 thread, tapped for the connection to the 94EDPH’s reducer and at the other end the reducer, there is M48×0.75 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 four-element air-spaced lens structure, supporting full-frame imaging and the image circle reaches 50mm, effectively controlling unwanted vignette. The practical focal ratio of the Sharpstar 94EDPH when used with this reducer is f/4.4, and the focal length can be shortened to 414mm. 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.
Specifications
|
94EDPH f/4.4 full-frame reducer Parameters |
||
|
Application |
94EDPH |
|
|
Focal ratio |
f/4.4 |
|
|
Image circle |
50mm |
|
|
Lens |
four-element air-spaced structure |
|
|
Outer diameter |
88mm |
|
|
Back focus |
55mm |
|
|
Length |
105mm |
|
|
Coating |
full-surface multi-layer coating |
|
|
Weight |
0.67kg |
|
Video
Images
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