Quintuplet petzval APO(including two pieces of ED glass)
Glass
ED glass
Imaging
Full-frame coverage
Yes
Camera format
full frame(44 mm)
Mechanical
Weight
2.68 kg Gross weight(including tube ring and dovetail plate) 3.5 kg Rear-end thread type M42/M48(with M48×0.75 filter thread)/M54 adapters
Tube length
332 mm(when the dew shield is contracted) 372 mm(when the dew shield is stretched)
Adapter
M42/M48(with M48×0.75 filter thread)/M54 adapters
Dimensions
70 mm
Astrophotography Fit
Best for general deep-sky imaging and visual observing when the mount, camera format, and correction hardware are chosen as one system.
Askar SQA70 f/4.8 Quintuplet Petzval Refractor Telescope sits in the telescope slot for general deep-sky imaging and visual observing. The important buying question is whether the optical design, focal length, and mount demands match the targets you actually shoot.
Fast astrographs collect signal quickly, but they are unforgiving: collimation, tilt, filter behavior, and back-focus spacing show up immediately in star shapes.
Best paired with
Rigid focuser, tilt adjuster, and exact corrector spacing
Cooled cameras with a sensor inside the corrected image circle
High-throughput filters that behave well at fast focal ratios
Not recommended for
Users who do not want to tune collimation, tilt, and spacing
Thick or narrow filters that show strong bandpass shift at fast focal ratios
Loose camera adapters or focusers that cannot hold the imaging train square
Where To Buy
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