Askar - APO140 140mm f/7 Triplet Refractor

SKU
ASK-140APO
$1,999.00
Availability : Pre-Order
Free Shipping Available

The Askar 140APO is a triplet refractor apochromatic optical tube assembly, featuring a large 140mm aperture, 980mm focal length, and a native focal ratio of f/7. This optical tube excels at light gathering power, resolution, brightness, and contrast, achieving a limited magnitude of 12.5. The impressive light-capturing capability, coupled with the elimination of chromatic aberration through its apochromatic design and ED glass, yields exceptionally clear observations and images with accurate color representation.

Askar APO140 140mm f/7 Triplet Refractor

APO140 f/7 OTA Features

  • The Askar 140APO is a triplet refractor apochromatic optical tube assembly, featuring a substantial 140mm aperture, 980mm focal length, and a native focal ratio of f/7. 
  • Included in the Askar 140APO is a retractable dew shield with an enlarged locking mechanism to prevent stray light and dew from entering the optics.
  • The rear lens tube of the Askar 140APO features an integrated retractable design for enhanced stability and altering between visual observation with a binoviewer and imaging.
  • Equipped with a 220mm handle, the Askar 140APO serves a dual purpose. It functions as a handle for holding the optical tube and as a losmandy style mounting base for attaching a finder scope
  • The 300mm losmandy style dovetail at the bottom of the Askar APO140 has hole spacing that can attach to a wide range of mounts available in the market.
  • The tube rings weigh only 1.7kg, providing stability without adding significant payload.
  • The CNC machined design of the optical tube assembly ensures a rigid and durable structure, with an appealing white exterior with orange accents.
  • The 140APO's dual-speed rack and pinion 3.5" focuser is compatible with the majority of motorized focusers, offering high precision with a 10cm focusing travel. Both sides of the focuser include finder bases for convenient mounting of accessories if needed.
  • The rear of the focuser boasts a 360° high-precision rotator with scales for precise adjustment and secure locking under high loads.
  • Sold separately, Askar has developed a 1x flattener to maintain the 140APO's focal ratio at f/7 while correcting field curvature and coma as well as a 0.8x reducer to increase the focal ratio speed to f/5.6, enabling wider field astrophotography of deep-sky objects with longer angular size.

Excellent Sharp Optics to Reveal Stunning Detail

The Askar 140APO is an triplet refractor apochromatic optical tube assembly, boasting a large 140mm aperture, 980mm focal length, and a native focal ratio of f/7. This combination provides a step up in terms of light gathering power, resolution, brightness, and contrast reaching a limited magnitude of 12.5! This impressive light capture combined with the elimination of chromatic aberration due to its apochromatic design and ED glass results in remarkable sharp views and images with true color.

Retractable Dew Shield to Remove Stray Light and Moisture

The Askar 140APO includes a retractable dew shield which consists of an enlarged locking mechanism. It removes any stray light from entering the optics and saturating exposures as well as minimizing any dew impact on optical components.

Extended Rear Lens Tube

The rear lens tube of the Askar 140APO features an integrated retractable design to enhance stability, with a rudder type locking ring to adjust, loosen and tighten, all while ensuring optical axis is stable. This allows a binoviewer to be attached for visual observation and when extended, for imaging purposes.

CNC Machined Design

The Askar 140APO includes a 220mm handle which serves dual purposes. It is used as a handle to hold the optical tube but also as a losmandy style mounting base for a finder scope to be attached. The 300mm losmandy style dovetail at the bottom has hole spacing that can attach to a wide range of mounts on the market. 

The tube rings are lightweight, weighing only 1.7kg.

The CNC machined design includes a rigid durable design, with an exterior featuring a white with orange accents for an attractive appearance.

3.5" RP Focuser

The 140APO dual speed rack and pinion 3.5" focuser works with the vast majority of motorized focusers with its high precision 10cm focusing travel. Both sides of the focuser include finder bases for easy mounting of accessories if needed.

The rear of the focuser includes a 360° high-precision rotator with scales for precise adjustment and secure locking under high loads. The telescope interface comes with a 1.25"/2" adapter for versatile accessory compatibility.

Optional Flattener and Reducer for Wider Field and Longer Exposure Imaging

Sold separaely, Askar has developed a 1x flattener which maintains the 140APO's focal ratio at f/7 while correcting field curvature and coma as well as a 0.8x reducer to increase focal ratio speed to f/5.6 for wider field astrophotography of deep sky objects with longer angular size.

More Information
Brand Askar
Free Shipping Free Shipping Available
Aperture 140mm
Case Included Yes
Focal Length 980mm
Focal Ratio f/7
Included Dovetail 300mm Losmandy style
Optical Tube Length 735mm (contracted dew shield); 870mm(extended dew shield)
Optical Tube Weight 21 lbs
In The Box
  • Askar APO140 140mm f/7 Triplet OTA
  • Tube rings
  • 300mm Losmandy dovetail
  • Oxford cloth case
  • Manual
  • Askar APO140 140mm f/7 Triplet OTA
  • Tube rings
  • 300mm Losmandy dovetail
  • Oxford cloth case
  • Manual
Write Your Own Review
You're reviewing:Askar - APO140 140mm f/7 Triplet Refractor
Your Rating
Shopping Guide Shopping Guide