Astronomy Specialist

ASKAR ACL200 F/4 APO LENS & ZWO EAF KIT

$1,649.00

Quantity
- +

 

The ASKAR ACL200 & ZWO EAF bundle includes the ACL200 F/4 Apo lens, ZWO EAF electronic focuser, and mounting kit for attaching the EAF to the focus ring of the lens, enabling accurate software-controlled focusing during astrophotography.

The Askar ACL200 F/4  is a 4-element apochromatic refractor with a built-in 2-element corrector and two ED (extra-low dispersion) lenses, with the form factor of a traditional telephoto lens. Unlike traditional camera lenses, the ACL200 is designed specifically for the demands of astrophotography and is perfectly corrected across a full-frame image circle and has minimal chromatic aberration and distortion. Perfect for wide-field imaging on star trackers and compact enough to travel with.

Note: Unlike typical camera lenses, this is manual focus only.

Features

  • Focal length 200mm
  • Adjustable focal ratio from F/4 to F/22 with 50mm aperture
  • Coarse and fine focus rings for smooth and accurate manual focus adjustment with 1mm precision
  • Standard Vixen dovetail plate with 3/8" and 1/4" female threads for connecting to camera tripods
  • 360° rotatable collar for quick and easy framing of targets
  • Included metal lens hood to keep out stray light and dew
  • Compatible with 82mm screw-in filters or 2" screw-in filters with included adapter
  • 135mm body length (without hood) and lightweight at 1.8kg

 

 In order to reach the correct back focus distance of 55mm with a DSLR or Mirrorless camera, a camera-specific T-ring and additional adapters may be required:

 


 

 

Optical design

Apochromatic Sextuplet with two ED elements

Objective diameter

50 mm

Focal length

200 mm

Focal ratio

f/4-f/22

Mount attachment

Arca-Swiss style tripod foot with 3/8" and 1/4" threads

Focuser

Coarse and fine manual focus rings

Focus distance 3 m - infinity

Camera connection

M48x0.75 male thread with 5mm height (camera ring sold separately)

Backfocus

55 mm

Lens weight

1.8 kg

Lens length

135 mm, 195 mm with hood

Diameter

100 mm with hood

SKU

AS-ACL200KIT

 

  Lens external components. 
Back focus distance.
Camera connection diagram. Filter connection diagram.

 

 

Orion with C/2020 M3 comet - Askar ACL200 Astro Lens, Sony A7R III, Hobym Crux 140 mount - 150x120s.

 

  

 

 Heart & Soul nebulae - Askar ACL200 Astro Lens, by Andrea Maggi.

 

 

Using the ACL200 as a macro lens with optional extension tubes - by Andrea Maggi.

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