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Askar

Askar FRA300 Pro (60mm f/5 Quintuplet Petzval Astrograph)

Askar FRA300 Pro (60mm f/5 Quintuplet Petzval Astrograph)

Regular price $999.00 USD
Regular price Sale price $999.00 USD
Sale Sold out

FRA300 Pro--the smallest 60mm F/5 Petzval astrograph with the fastest native focal ratio in the FRA series so far,it's focal length is 300mm.

The star is sharp and delicate. At the center of its field of view, the RMS radius can reach 2um. Even a serious user can also be satisfied when it comes to the shape of stars.

Specifications

FRA300PRO

Aperture

60mm

Focal length

300mm

Focal ratio

f/5

Objective type

Quintuplet fully air-spaced Petzval APO (including one ED glass)

Image circle

44mm full-frame

Maximum accessory connection (with the focuser fully retreated):

1. Imaging mode:
71mm (from the base of M42×0.75 male thread)
67mm (from the base of M48×0.75 male thread)
71mm (from the base of M54×1male thread)

Total length:

303mm

Net weight:

2.26kg

Gross weight:

3.12kg

Rear-end thread :

M48*0.75 male thread

Standard package items:

a tube ring, a handle, an Askar 300mm Vixen dovetail plate, a M42*0.75 adapters, a warranty,a manual

 

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