Astronomy Specialist

ASKAR SQA106 f/4.8 APO QUINTUPLET

$6,199.00AUD
SKU: AS-SQA106

Askar

Apochromatic Quintuplet

5.82 kg

 

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

 

 Instruction manual
Gallery

 




 


ASKAR SQA106 f/4.8 APO QUINTUPLET

$6,199.00AUD

Optical design

Apochromatic Quintuplet

Image circle

44 mm

Focal ratio

f/4.8

Aperture

106 mm

Focal length

509 mm

Optical thickness

Threads

M68 x 1 Male, M54 x 0.75 Male, M48 x 0.75 Male

Cooled

Colour or Mono

Pixel size

Sensor dimensions

Resolution

Sensor diagonal

Quantum efficiency

Read noise

Fullwell capacity

Bit depth

FPS

Camera backfocus

Filter size

Filter size

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

Mount type

Payload capacity

Latitude range

Dovetail saddle

Slew speed

Encoders

Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter

Weight

5.82 kg

Length

Width

Height

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