A new apochromatic refractor with high-performance Super ED glass. Due to its special refractive properties in the lens system, the FPL53 glass can enable an extremely good correction of residual chromatic errors.
The advantage of these SD refractors lies in their short overall length and the associated low weight. The SD glass is designed to bring all rays from violet through red, blue, yellow and green together very precisely onto the same plane. The special lens material reduces chromatic aberration across all color components. In combination with the new, optional SD Reducer HD Kit or SD Flattener HD, these refractors enable illumination in a 44mm image circle, sufficient for full-frame sensors.
Characteristics:
- Doublet ED Apo lens design with excellent imaging behavior
- Aperture 103mm, focal lenght 795mm, f/7.7
- Optics and mechanics "made in Japan"
- 60mm / 2" Focuser with adaptions M60x0.75, 36.4mm, 1¼" eyepiece adapter
- Optional reducer/corrector
- Dovetail Vixen compatible
- OTA lenght 81cm
- Weight appr. 5.4kgs
Delivery:
- OTA 103/795mm Doublet ED Apo lens
- 60mm / 2" focuser with 1¼" adapter
- Flip mirror 1¼"
- Finderscope 7x50
- Tube rings with handle
- Vixen style dovetail
| Angular resolution (arc seconds): | 1.13 |
| Aperture ratio: | 7.7 |
| Batteries included: | No |
| Batteries required: | No |
| Colour: | white |
| Compass: | No |
| ED glass: | Yes |
| Eyepiece Barrel Diameter (mm): | 50.8 |
| Field of application [Telescopes]: | Deep Sky Observation , Deep Sky Photography , Lunar observation , Lunar photography , Planetary observation , Planetary photography |
| Finderscope: | 7 x 50 mm |
| Focal length (mm): | 795 |
| Focusing system: | 2" Crayford-Focuser |
| Magnification from: | 20 |
| Material: | Metal |
| Material OTA: | Metal |
| Material front lens or corrector plate: | Ohara Japan FPL-53 ED glass |
| Maximum recommended magnification: | 206 |
| Mirror/Lens diam. (mm): | 103 |
| Mount Type [Telescopes]: | Optics without Mount |
| Net weight OTA (incl. accessories) (kg): | 5.4 |
| Optical design: | Apochomatic Refractor |
| Product Family [Telescopes]: | Refractor telescope |
| Reticle: | No |
| Target Group [Telescopes]: | Advanced Amateurs , Specialists and Research , Visual enthusiasts |
| Total length (mm): | 810 |
| Tripod height adjustment: | No |
| Tube diameter (mm): | 115 |
| Type of coating: | Fully multi-coated |
| Visual limiting magnitude (approx., mag): | 11.8 |
Manual:
Manual_SD_tube115_103_81a_EN.pdf
Products specifications
| Tube weight | 7.7 lb incl. Tubering |
| Limit value | 11.3 mag |
| Viewfinder | Red Dot Finder |
| Aperture | 81 mm |
| Resolution | 1.43 arcsec |
| Focal length | 625mm |
| Type of telescope | Apochromatischer Refractor |
