Epsilon 180ED Astrograph OTA
Takahashi
From ~$4,734.28
3 stores
In stock
The Epsilon series of astrographs are specifically designed for exceptional astrophotography. Takahashi's proprietary optical design features a hyperbolic, concave primary mirror with a 2 element ED corrector lens to eliminate spherical aberration and coma. The ε-180 was designed to be a very fast f/2.8 imaging system that is one capable of producing 10 micron stellar images across the entire super-flat field. The Epsilon-180ED suits both visual observation and large field imaging needs.
Specifications
| Aperture | 180 mm |
| Optical design | Hyperbolic Newtonian |
| Focal length | 500 mm |
| Secondary Mirror Size | 80 mm |
| Tube Length | 570 mm |
| Tube Diameter | 232 mm |
| Stellar Image Size | 10 μm |
| Focal ratio | f/2.8 |
| Back Focus Distance | 56 mm |
| Weight | 10.7 lb |
| Field of View | 5° |
| Image Circle Diameter | 44 mm |