ASKAR SQA106 f/4.8 APO QUINTUPLET
Askar
Apochromatic Quintuplet
5.82 kg
ASKAR SQA106 f/4.8 APO QUINTUPLET is backordered and will ship as soon as it is back in stock.
The Askar SQA106 is an apochromatic quintuplet flat-field astrograph that offers high performance thanks to its air-spaced SD lens design. With a 55mm image circle support, a central star point RMS radius of less than 1.7 µm, and a full-field illumination of over 90% at 44 mm image circle, it ensures superb image quality. MTF data reveals excellent performance, with a super-fine star point of less than 2.2 µm at 55 mm.

Thanks to its Petzval design, you don't need to worry about reaching a precise backfocus distance. As long as you're in focus, you're good to go. Recommended sensor distance to the rear adapters is between 48 - 78mm.
Unlike the smaller SQA55, the SQA106 has a traditional 2.8" dual-speed rack & pinion focuser which is compatible with most motorized focusers on the market, such as the ZWO EAF or QHY Q-Focuser. Like the rest of the tube, the entire focuser barrel is CNC-machined for strength and rigidity. Anti-reflective matte paint ensures stray light is kept to a minimum. The rear high-precision 360 degree rotator is engraved with a micrometric scale, making repeatable framing for astronomical targets straightforward.

Two finder brackets on the focuser as well as a finder saddle on the top of the rings allow you to connect a variety of accessories such as guiders and control units. The 300mm Losmandy style dovetail plate gives you plenty of room to balance the scope with typical imaging trains.

The SQA106 comes with M68, M54 and M48 camera-side adapters for easy connection to typical imaging trains. A durable water resistant resin case with EVA foam interior keeps the telescope safe and has plenty of space for additional accessories.


Specifications
Optical design |
Apochromatic air-spaced quintuplet with SD glass |
Objective diameter |
106 mm |
Focal length |
509 mm |
Focal ratio |
f/4.8 |
Mount attachment |
300 mm Losmandy style dovetail |
Focuser |
Dual-speed 2.8" rack & pinion |
Tube weight |
5.82 kg (8.12 kg with dovetail and rings) |
Tube length |
516 mm (586 mm with dew shield) |
Tube diameter |
119 mm |
Dew shield diameter |
135 mm |
Connections |
M78 x 1, M68 x 1, M54 x 0.75, M48 x 0.75 |
Backfocus range |
48 - 78 mm from M48 thread |
Image circle |
44 mm (55 mm) |
SKU |
AS-SQA106 |
Items included
- SQA106 OTA
- Padded soft case
- 300mm Losmandy dovetail plate
- M68 x 1, M54 x 0.75 & M48 x 0.75 camera adapters
- Manual
Downloads
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Gallery


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Optical design
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Aperture
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Focal length
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Focal ratio
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Image circle
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Backfocus48 - 78 mm
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Focuser type
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Tube diameter
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Dew shield diameter
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Weight