Sharpstar 130 F/2.8 HNT hyperbolic astrograph with 3-lenses corrector
Sharpstar presents a new compact astrograph called 130 F2.8 HNT, a mirror astrograph composed by a primary hyperbolical mirror F/2.8, a standard secondary mirror and a three lens corrector capable to cover a 44 mm imaging circle, i.e. up to the full-frame image format.
This new astrographs features a 130 mm primary mirror with an effective focal length of 364 mm. A fantastic instrument for wide-field imaging!
Sharpstar 130 F/2.8 HNT hyperbolic astrograph with 3-lenses corrector
Sharpstar presents a new compact astrograph called 130 F2.8 HNT, a mirror astrograph composed by a primary hyperbolical mirror F/2.8, a standard secondary mirror and a three lens corrector capable to cover a 44 mm imaging circle, i.e. up to the full-frame image format.
This new astrographs features a 130 mm primary mirror with an effective focal length of 364 mm. A fantastic instrument for wide-field imaging!
Features
- Aperture：130mm
- Focal length of primary mirror：364mm
- Focal ratio of primary mirror：f/2.8
- Primary mirror type：Hyperbolic reflective mirror
- Primary mirror material：PZ33（similar to Pyrex glass）
- Corrector：two-element air-spaced refractive lenses（including one ED glass）
- Minor axis of secondary mirror：65mm
- Image circle：44mm
- Field of view：6.9 degree
- Main tube material：High-end carbon fiber
- Main tube outer diameter：174mm
- Main tube length：394mm
- Net weight：3.2kg
- Gross weight：4.3kg（including protective cap, tube rings, handle and Vixen-style dovetail plate）
- Resolution：0.89 arc second
- Focuser：2.5" with fine-adjustment
- Limiting visual magnitude：12.3
- Back-focus：55mm
| Product Status | New |
|---|---|
| Package width | 37 cm |
| Package height | 42 cm |
| Package depth | 63 cm |
| No. of parcels | 1 |