By Askar
Askar Full-frame Flattener/Reducer Professional Astronomical Accessory Dedicated for 80ED Astrograph
Regular price
$189.00
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$189.00
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Regular price
$189.00
Regular price
Sale price
$189.00
Askar Professional Astronomical Accessory Dedicated for 80ED Astrograph
F7 1.0x Full-frame Flattener：
Specification:
- (After attaching) 80ED Focal length: 560mm
- (After attaching) 80ED Focal ratio: f/7
- Lens Number: Triplet design (including one ED glass)
- Image circle: APS-C
- Back Focus: 55mm (from the base of M48 male thread)
- Weight: 0.42kg
- Rear-end thread type: M54x0.75; M48x0.75 (M48x0.75 filter thread inside)
Specification:
- (After attaching) 80ED Focal length: 560mm
- (After attaching) 80ED Focal ratio: f/7
- Lens Number: Triplet design (including one ED glass)
- Image circle: APS-C
- Back Focus: 55mm (from the base of M48 male thread)
- Weight: 0.42kg
- Rear-end thread type: M54x0.75; M48x0.75 (M48x0.75 filter thread inside)
F5.9 0.85x Full-frame Reducer：
Specification:
- (After attaching) 80ED Focal length: 476mm
- (After attaching) 80ED Focal ratio: f/5.9
- Lens Number: Triplet design (including one ED glass)
- Image circle: APS-C
- Back Focus: 55mm (from the base of M48 male thread)
- Weight: 0.44kg
- Rear-end thread type: M54x0.75; M48x0.75 (M48x0.75 filter thread inside)
- (After attaching) 80ED Focal length: 476mm
- (After attaching) 80ED Focal ratio: f/5.9
- Lens Number: Triplet design (including one ED glass)
- Image circle: APS-C
- Back Focus: 55mm (from the base of M48 male thread)
- Weight: 0.44kg
- Rear-end thread type: M54x0.75; M48x0.75 (M48x0.75 filter thread inside)
F4.9 0.7x Full-frame Reducer：
Specification:
- (After attaching) 80ED Focal length: 392mm
- (After attaching) 80ED Focal ratio: f/4.9
- Lens Number: Triplet design (including one ED glass)
- Image circle: APS-C
- Back Focus: 55mm (from the base of M48 male thread)
- Weight: 0.32kg
- Rear-end thread type: M54x0.75; M48x0.75 (M48x0.75 filter thread inside)
Specification:
- (After attaching) 80ED Focal length: 392mm
- (After attaching) 80ED Focal ratio: f/4.9
- Lens Number: Triplet design (including one ED glass)
- Image circle: APS-C
- Back Focus: 55mm (from the base of M48 male thread)
- Weight: 0.32kg
- Rear-end thread type: M54x0.75; M48x0.75 (M48x0.75 filter thread inside)
Package Included:
- 1 x Flattener or Reducer
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