76143 A105M
A larger aperture version of the A80M, this OTU also offers an excellent first choice as a telescope but with higher light gathering power.
The A105M is an achromatic refractor with a 105mm objective lens. Focal length is 1000mm with a focal ratio of f9.5. Its light gathering power is 225x.
The tube is supplied with a red dot finder, flip mirror, tube rings and dovetail mounting plate.
Various accessories are available for attaching photographic instruments to the telescope.
Shown with eyepieces sold separately
2011 models are supplied with 75971 50.8mm
Compression Ring Eyepiece Adapter
| Objective lens | 105mm achromatic, magnesium fluoride coating |
| Focal length (Focal ratio) | 1000mm (f9.5) |
| Resolving power, limiting magnitude | 1.1 arc sec., 11.9 |
| Light gathering power | 225x |
| Tube size & weight | (OD) 115mm x (L) 1060mm, 3.8kg (8.4lb) |
| Finderscope | Red dot finder |
| Adapter thread / visual back | 60mm on scope body. 42mm for T-mount and 31.7mm push-fit on flip mirror. 50.8mm option* |
| Accessories included | Dovetail adapter, tube rings, flip mirror & dot finder |
| Photography** | Prime focus, Eyepiece projection and afocal imaging |
*A 50.8mm mirror diagonal or a 50.8mm extension tube is needed to use a 50.8mm eyepiece. **Optional photographic accessories are needed.
