ASKAR 50P f/3.8 APO REFRACTOR

The Askar 50P is an apochromatic quadruplet flat-field astrograph that offers high performance in a compact package. The fast Petzval design makes it perfect for wide-angle astrophotography, with one Super-low dispersion glass (SD) element that minimizes chromatic aberration. Like many Askar refractors, the 50P does not need an external field flattener. While its image circle covers sensors as large as APS-C, it excels at imaging with 1" sensors. The OTA itself weighs just 1.4kg and has an overall length of 147mm with the dew shield contracted, making it easy to transport. Its compact size means it can also be used as premium guide scope. The sing-speed helical focuser is smooth and familiar to anyone who has used traditional camera lenses. Optional autofocusers like the ZWO EAF can be attached with the additional belt drive kit (sold separately). Rear M54 x 0.75 and M48 x 0.75 threads provide a straightforward connection to common imaging trains. Built-in M48 filter threads allow standard 2" mounted filters to be added. The front of the telescope features an M52 filter thread for use with common terrestrial photography filters. Unlike most refractors, the 50P includes two finderscope bases on either side of the focuser, allowing you to attach both a standard guide scope and control unit such as the ASIAIR without the need for additional accessories. The handlebar also includes a finder-style slot, allowing for even more possibilities. The inner surfaces of the retractable dew shield are covered with matte felt and the interior of the telescope tube has matte paint and internal baffles, to reduce internal reflections and light scattering. Specifications Optical design Apochromatic air-spaced quadruplet with SD glass Objective diameter 50 mm Focal length 190 mm Focal ratio f/3.8 Resolving power 2.32 arc second Stellar limiting magnitude 11.19 Max. magnification 125 x Light gathering power 51.02 times the human eye Mount attachment 160 mm Vixen-style dovetail plus finder-style base Focuser Single-speed helical focuser Tube weight 1.4 kg Tube length 147 mm (182 mm with dew shield extended) Tube diameter 65 mm Dew shield diameter 70 mm Connections M64 x 1, M54 x 0.75, M48 x 0.75 Focus point (imaging mode) 65 mm from M48 thread, 69.5 mm from M54 thread SKU AS-50P Items included 50P OTA Tube ring Handle bar Pair of finder saddles 160mm Vixen bar M54 - M48 adapter Manual Instructions Downloads Instruction manual Gallery Rho Ophiuchi cloud complex | Askar 50P, ZWO ASI2600MC. Monoceros | Askar 50P, ZWO ASI2600MC.