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Tecnosky 70m/478mm f/6.78 QUADRUPLET with Lanthanum element
- 4-element ED APO with integrated corrector
- Lanthanum glass for a excellent color correction.
- Perfect refractor for wide-field Deep-sky photography with APS-C sensors
Advantages:
- Integrated two element corrector
- 32mm illuminated field
- Aluminum tube with internal baffles
- 2inch dual Speed Crayford focuser with 1:10 reduction
- 360° camera rotation
- Multi functional mounting dovetail
- Doublet objective with a Lanthanum correcting element providing crisp charp images
- Aluminium Case inlcluded
Technical features:
- Aperture: 70mm
- Focal length: 474mm
- Photographic speed: f/6.78
- Fully illuminated and corrected field of 32mm
- Weight 2.5kg
