0.8x Variable Corrector-Reducer for APO 102/115/130/152

0.8x Variable Corrector-Reducer for APO 102/115/130/152

DESCRIPTION
This optical accessory is a 0.8x full-frame corrector-reducer built for Tecnosky's apochromatic refractors from 102mm up to 152mm. It corrects the image field and shortens the focal length, ensuring edge-to-edge sharpness even on full-frame sensors.
Focal lengths achieved with this accessory:

• 102Apo SLD 102/714: reduced to F5.6, 571mm

• 115Apo 115/805: reduced to F5.6, 644mm

• 130Apo SLD 130/910: reduced to F5.6, 728mm

• 152Apo SLD 152/1216: reduced to F6.4, 973mm

The standard backfocus is 55mm and can be precisely adjusted up to 70mm.
On the camera side, it features an internal M48x0.75 thread compatible with 50.8mm (2") filters.

TECHNICAL SPECIFICATIONS

• Type: Corrector + reducer

• Reduction factor: 0.8x

• Compatibility: Tecnosky APO 102 / 115 / 130 / 152 mm

• Resulting focal lengths:

  • 102/714 → 571mm

  • 115/805 → 644mm

  • 130/910 → 728mm

  • 152/1216 → 973mm

• Resulting focal ratios: F5.6 (F7 models), F6.4 (F8 model)

• Backfocus: 55mm base, adjustable up to 70mm

• Camera thread: M48x0.75

• Filter compatibility: 50.8mm (2") filters