Astrograph Refractors
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Astrograph Refractors
Astrophotographically optimized lens telescopes (astrographs) consist either of primary optics, combined with a flattener or reducer, or of multi-part (4 to 6 lens) optical designs that enable optimal geometric and chromatic correction. The focal ratio is very short (mostly f / 3.5 - f / 5.6), which shortens the exposure times.
From the beginning, the goal was to create the best possible design for an affordable, small, lightweight, and fast Apochromatic refactor for astrophotography.
Characteristics:
- 4 lens Petzval optical design
- Aperture 51mm, focal lenght 250mm, f/4.9
- Massive OTA from Aluminum alloy
- Compact and ultra portable
- Field rotator
- Helical focuser design
- Tilting platform
- Field illumination even for full frame sensors
1061.00 €
Estimated delivery time : 1-4 days (valid for new orders)
The special feature of the 140mm SD APO with Riccardi Reducer:
- Very high quality processed and of convincingly good optical quality
- Colorless optics with FLP53 glass
- Precise 2.5" focuser with 1:10 mirco reduction for heavy accessories
- With f / 7 ideal for visual
- With f/5,25 ideal for photographic purposes with Riccardi Reducer
- CNC tube rings
- Carry handle
- Very good value for money
3700.00 €
Estimated delivery time : 4-8 weeks (valid for new orders)
The new, compact Allrounder by APM with 2-lens FPL 53 Optics wit Riccardi M63 Reducer.
3990.00 €
Estimated delivery time : 4-8 weeks (valid for new orders)
APM Doublet ED APO-Astrograph 152 f/5,9 - 42mm - 2.5ZTA, includet is the Riccardi Reducer und a Case
3890.00 €
Estimated delivery time : 4-8 weeks (valid for new orders)
APM Doublet ED APO-Astrograph 152 f/5,9 - 42mm image circle - 3.7" focuser
4090.00 €
Estimated delivery time : 4-8 weeks (valid for new orders)
