SVBONY 1.25'' Helical Focuser for telescopes / finderscopes / guidescopes
- Solves sluggish focusing problem of your telescopes or telephoto lenses with this helical focuser
- Flexible connection configurations allows supported for different telescopes / finderscopes / guidescopes on the front end, and different cameras (DSLR / Web cams / dedicated astro cameras) on the backend
- Made using aerospace aluminum alloy material with precision CNC machining technology
- Frosted and anodized housing with anti-skid brass screws
- Focuser has a fixed orientation - there is no rotation of mounted cameras or eyepieces so the field of view of your guide star is fixed when focusing
- Front side has a M31*0.5 male thread that can be connected with various adapters to connect with your telescopes / finderscopes / guidescopes .
- 5 Front-side adapter options (M42 male, M42 female, SCT male, SCT female, 2-inch adapter). See pictures in product description. Sold separately.
- Rear-side has M42x0.75 male thread on its top that can be connected with camera adapters such as Canon / Nikon / Sony / Panasonic / Olympus, etc. Sold separately.
- Rear side also supports eyepieces and standard 1.25" accessories



M42 male Adapter (sold separately):


M42 female Adapter (sold separately): 
SCT Male Adapter (sold separately): 
2"Nosepiece Adapter (sold separately):
 
SCT Female Adapter (sold separately):

SPECIFICATIONS
| Helical Focuser Model |
SV161 |
| Inner diameter |
1.25" |
| Stroke |
10mm |
| Adjustment Accuracy |
0.05mm |
| Top Male Thread |
M42x0.75 |
| Bottom Male Thread |
M31*0.5 |
| Minimum Height |
43mm |
| Longest Height |
53mm |
| Adapter Model |
SV150(W9113A) |
SV150(W9113B) |
SV150(W9113C) |
SV150(W9113D) |
SV150(W9113E) |
| Size |
M31*0.5 to M42*0.75 female thread |
M31*0.5 To M42*0.75 T2 Male Thread |
M31*0.5 To SCT Male Thread |
M31*0.5 To 2" Female Thread |
M31*0.5 To SCT Female Thread |
| Color |
Black |
Black |
Black |
Black |
Black |
| Material |
Aluminum Alloy |
Aluminum Alloy |
Aluminum Alloy |
Aluminum Alloy |
Aluminum Alloy |
About SvBony
Svbony started operation in 2009 as a manufacturer of astronomy and sports optical accessories, based in Shenzhen, China. For astronomy, Svbony offerings include a wide range of telescope parts and adapters for both visual and astrophotography. Svbony emphasize on good product quality at affordable prices, and has a distribution network across the world, with US/AU/UK/ES/DE/IT/FR oversea warehouses. Amateur astronomers world-wide recognize Svbony products to be of excellent value. Svbony also has one of the most varieties of hardware adapters for astrophotography - you will likely find a solution to a hardware connection problem you have.
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