76EDPH f/4.5 Full-Frame Reducer
Category： Sharpstar
The 2.5" 76EDPH f/4.5 full-frame reducer is dedicated for Sharpstar 76EDPH astrograph. At one end of the reducer, there is M74×1 thread, tapped for the connection to the 76EDPH’s reducer and at the other end the reducer, there is M48×0.75 thread for the connection of most stock cameras.
leave a message now >Product introduction
The 2.5" 76EDPH f/4.5 full-frame reducer is dedicated for Sharpstar 76EDPH astrograph. At one end of the reducer, there is M74×1 thread, tapped for the connection to the 76EDPH’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 three-element air-spaced lens structure, supporting full-frame imaging, effectively controlling unwanted vignette. The practical focal ratio of the Sharpstar 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.
Specifications
|
76EDPH f/4.5 full-frame reducer Parameters |
||
|
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 |
|
Video
Images
Download
RELATED PRODUCTS
Contact us
WANT TO SEE THE DISTANT STARS?
Contact Us Now!
3rd Floor, Building 5, Science and Technology Innovation Center, No. 1369, Chengnan Road, Nanhu District, Jiaxing, Zhejiang
