Starfield Gear Series 70mm f/5 Quadruplet Astrograph
Starfield
From $1,414.99
2 stores
In stock
The Starfield Gear Series 70mm f/5 Quadruplet Astrograph is a premium Petzval-design refractor engineered specifically for wide-field astrophotography and deep-sky imaging. Featuring a 70mm aperture, 350mm focal length, and fast f/5 focal ratio, this astrograph excels at capturing expansive nebulae, galaxies, and star clusters with exceptional edge-to-edge sharpness. The quadruplet apochromatic design with fully multi-coated optics minimizes chromatic aberration and delivers uniform flatness across the entire image plane without requiring an additional field flattener, making it an ideal grab-and-go platform for APS-C and full-frame DSLR sensors.
Specifications
| Focal length | 350 mm |
| Focuser Type | 2.5 inch Dual-Speed Rack & Pinion |
| Camera Angle Adjuster | ✓ |
| Back Focus Working Distance | 41 mm |
| Focal ratio | f/5 |
| Image Circle | 43.2 mm |
| Dovetail | Vixen-style |
| Tilt Adjustment Plate | ✓ |
| Optical Elements | 4 |
| Optical design | Quadruplet APO Refractor |
| Aperture | 70 mm |
| Optical Coatings | Fully Multi-Coated |