Astronomy Specialist

ASKAR 130PHQ APO QUADRUPLET f/7.7

$3,873.00 USD
SKU: AS-130PHQ

Askar

Apochromatic Petzval quadruplet

130 mm

f/7.7

1000 mm

12.5 kg


 

The Askar 130PHQ is a professional apochromatic flatfield Petzval quadruplet with a focal ratio of f/7.7 and a corrected field of 60mm in diameter, making it suitable for use with medium-format cameras.

The Askar 130PHQ includes two Extra Low Dispersion glass elements for superb correction of chromatic aberration.

Differently from standard ED refractors, the Askar 130PHQ features a Petzval design that does not require to set the sensor to a specific distance to the last lens. That leaves the freedom to use any filter wheel, any off-axis guider or accessory without any worry to calculate the correct distance from the flattener. 

With a large 60mm image circle and a focal ratio of f/7.7, this is the perfect astrograph for the advanced astrophotographer. The large rack and pinion 3.4" focuser has a massive 8kg payload capacity, can be rotated 360° to perfectly frame the subject and it has a reduction gear of 10:1 for precise focusing. Its long travel distance allows use as a visual instrument as well as a capable astrograph. The 130PHQ is natively compatible with the Prima Luce Lab Sesto Senso 2 robotic microfocuser.

All the lenses are fully multi-coated and the tube is internally flocked to reduce reflections and absorb stray light. The tube is made of CNC-machined aluminium, the rack and pinion focusing mechanism of brass and the mechanical components are engineered to provide the best rigidity, performance and durability.

 

 

The Askar 130PHQ comes with a variety of adapters to connect a wide range of imaging and visual accessories.

  


 

Optical design Apochromatic Quadruplet air-spaced
Objective diameter 130 mm
Focal length 1000 mm
Focal ratio f/7.7
Resolving power 1.06 arc seconds
Stellar limiting magnitude 13.27
Max. magnification 325 x
Light gathering power 344.9 times the human eye
Mount attachment Losmandy style dovetail plate (300 mm long)
Focuser Rack & pinion dual speed (10:1) 3.4" diameter
Included connection adapters M86 x 1, M68 x 1, M54 x 0.75, M48 x 0.75, 2", 1.25"
Backfocus 186 mm (from the base of the M86 thread)
Tube weight 12.5 kg (including tube rings and dovetail bar)
Tube diameter 146 mm
Dew shield diameter 162 mm
SKU AS-130PHQ




 


  • Askar 130PHQ
  • Pair of tube rings
  • 300mm Losmandy style dovetail bar
  • Carrying handle
  • Adapter M86 x 1 to M68 x 1
  • Adapter M68 x 1 to M54 x 0.75
  • Adapter M54 x 0.75 to M54 x 0.75
  • Adapter M54 x 0.75 to M48 x 0.75 with 2" filter thread
  • 2" visual back
  • 1.25" adapter
  • Manual


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ASKAR 130PHQ APO QUADRUPLET f/7.7.

ASKAR 130PHQ APO QUADRUPLET f/7.7

$3,873.00 USD

Optical design

Apochromatic Petzval quadruplet

Image circle

Focal ratio

f/7.7

Aperture

130 mm

Focal length

1000 mm

Optical thickness

Threads

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

12.5 kg

Length

Width

Height

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