Askar 50P quadruplet APO astrograph
Askar 50P is a portable, versatile quadruplet APO astrograph.
Askar 50P quadruplet APO astrograph
The Askar 50P is a compact OTA that combines a 50 mm aperture, 190 mm focal length, and a fast F/3.8 focal ratio into a lightweight, portable form, delivering professional optical performance in a minimal footprint.
Its optical system employs a quadruplet Petzval APO design, featuring one SD glass element. The rear two elements are cemented, supporting APS-C format and optimized for 1-inch sensors (16 mm image circle). Thanks to the self-flattened design, no additional correctors are required: attach your camera, achieve focus, and begin capturing flat-field images.
The lens tube is built as a single lightweight unit. The lens hood adopts a retractable design: extended during use to effectively block stray light and reversed when stored to minimize overall length. Combined with the dust cover, it offers both convenience and protection.
Dual finder bases are integrated on both sides of the tube ring, and multiple standard M4 threaded holes are reserved, offering ample potential for expanding with astronomical accessories.
Whether you are beginning your journey into deep-sky astrophotography or seeking a high-quality portable secondary scope, the Askar 50P - with its thoughtful design, robust optics, and attention to practical detail - is built to be a reliable companion under the stars
Specifications |
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Aperture size |
50 mm |
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Focal length |
190 mm |
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Focal ratio |
F/3.8 |
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Objective lens |
Quadruplet Petzval APO（including one piece of SD glass） |
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Total length |
147 mm (when the dew shield is contracted) |
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Format specifications |
APS-C format（optimized for 1-inch sensors - 16 mm image circle） |
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Gross weight（including tube ring and dovetail plate） |
1.4 kg |
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Rear-end thread type |
M48 adapter (with M48×0.75 filter thread) |
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Rear-end connection distance |
Support 50-65 mm range (Recommended connection length is 55 mm) |
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Standard package items |
A 50P OTA，a manual |
| Product Status | New |
|---|---|
| Package width | 24 cm |
| Package height | 21,5 cm |
| Package depth | 21 cm |
| No. of parcels | 1 |
