131F 0.74× Reducer
Category： Accessories
Designed exclusively for the Askar 131F, this 0.74× reducer reduces the 131F focal ratio to F5.6, unlocking more potential for your imaging possibilities.
Retail Price:
$ 299
20
In stock Back OrderedUpon package arrival, expect to pay customs duties and VAT to customs
隐藏域元素占位
这里是标题一h1占位文字
Category： 这里是占位文字
这里是占位文字
-
尺码
- S
- M
- XL
- XXL
-
颜色较长
-
红
-
粉
-
蓝蓝蓝蓝蓝
-
黑色黑色黑色黑色
-
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
- Video
- Images
- Download
-
- Commodity name: 131F 0.74× Reducer
- Commodity ID: 131F 0.74× Reducer
Designed exclusively for the Askar 131F, this 0.74× reducer reduces the 131F focal ratio to F5.6, unlocking more potential for your imaging possibilities.
-
This 0.74× Reducer is the ideal companion for the Askar 131F telescope, reducing the focal ratio from f/7.5 to f/5.6. This dramatically shortens exposure times, allowing you to effortlessly capture wide-field nebulae,dense star clusters, as well as faint or fast-moving celestial objects.
It also incorporates field-flattening correction capabilities,effectively eliminating field curvature to ensure sharp, clear stars from the center to the edges of the frame.
Featuring a triplet optical lens design, this reducer supports a 44mm full-frame image circle. It has a standard back focus of 55mm (measured from the M48 thread), with M72×1 threads on both ends.The package includes an extension tube and comes with both M54×0.75 and M48×0.75 adapter rings that connect directly to the reducer for easy installation.The rear adapter ring features a built-in M48×0.75 thread, enabling direct attachment of 2-inch filters.
Constructed using CNC machining, the reducer is equipped with metal thread caps on both ends. These caps protect the optics and offer convenient dust-proof storage, reflecting the product's professional quality.
-
Parameter （After attaching）131F Focal length 733.6mm （After attaching）131F Focal ratio f/5.6 Lens Number Triplet design Back Focus 55mm（from the base of M48 male thread） Weight 0.56kg Rear-end thread type M72*1 Size Diagram 
Installation 
Optical Path Diagram 
Spot Diagram 
Product introduction
This 0.74× Reducer is the ideal companion for the Askar 131F telescope, reducing the focal ratio from f/7.5 to f/5.6. This dramatically shortens exposure times, allowing you to effortlessly capture wide-field nebulae,dense star clusters, as well as faint or fast-moving celestial objects.
It also incorporates field-flattening correction capabilities,effectively eliminating field curvature to ensure sharp, clear stars from the center to the edges of the frame.
Featuring a triplet optical lens design, this reducer supports a 44mm full-frame image circle. It has a standard back focus of 55mm (measured from the M48 thread), with M72×1 threads on both ends.The package includes an extension tube and comes with both M54×0.75 and M48×0.75 adapter rings that connect directly to the reducer for easy installation.The rear adapter ring features a built-in M48×0.75 thread, enabling direct attachment of 2-inch filters.
Constructed using CNC machining, the reducer is equipped with metal thread caps on both ends. These caps protect the optics and offer convenient dust-proof storage, reflecting the product's professional quality.
Specifications
| Parameter | |
| （After attaching）131F Focal length | 733.6mm |
| （After attaching）131F Focal ratio | f/5.6 |
| Lens Number | Triplet design |
| Back Focus | 55mm（from the base of M48 male thread） |
| Weight | 0.56kg |
| Rear-end thread type | M72*1 |
| Size Diagram |
| Installation |
| Optical Path Diagram |
| Spot Diagram |
Video
Images
Download
这里是占位文字
这里是占位文字
这里是占位文字
这里是占位文字
这里是占位文字
这里是占位文字
RELATED PRODUCTS
Contact us
WANT TO SEE THE DISTANT STARS?
Contact Us Now!
3rd Floor, Building 13, Jiaxing Smart Industry Innovation Park, No. 36 Changsheng South Road, Jiaxing City
