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Askar ACL200 Gen. 2 200mm f/4 APO Telephoto Lens for Astrophotography

The ACL200 from Askar is a professional apo with very good correction with all the possibilities of a manual telephoto lens for full-frame cameras.

♦ Focal length 200 mm / focal ratio f4 / aperture 50 mm

♦ Full astronomical APO optics with integrated image field flattening - illumination and correction up to full format

♦ Image free of chromatic aberrations and reflections

♦ Fine focus mode (front ring) for precise focus adjustment for astrophotography (0.002 mm accuracy)

♦ Integrated aperture adjustment from f/4 to f/22 for landscape photography (depth of field)

♦ Working distance 55 mm from the M48x0.75 thread, thus all common cameras can be connected

♦ Working distance 66.5 mm from the M69x1 female thread for individual adaptations

♦ Screw-in option for 2" filter

♦ Focusing range from 3 meters to beyond infinity

♦ Dew cap and stray light protection - screwed included

♦ Gen. 2 with universal viewfinder shoe and multi-function adapter plate for photo tripods and EQ5-level quick coupling


 

Askar ACL200 Apo telephoto lens for astrophotography and landscape photography.

Askar breaks new ground with the ACL200. For the first time, a full-fledged apochromatic refractor has been combined with the comfortable operation of a telephoto lens. Especially the requirements of astrophotographers have been taken into account. With the ACL200, perfect astrophotography can be achieved right from the start.

This is what distinguishes the ACL200 from conventional telephoto lenses:

♦ The optics is a 4-element APO with two ED special glasses for best possible color correction. The 2-element corrector is fixed in the tube and guarantees a distortion-free field up to full format.

♦ In addition to normal focusing for landscape photography, you still have microfocusing at the front end of the apo. A rotation of 360° causes a focus adjustment of only 1 mm! So you can focus to within 0.002 mm and then fix the optimal focus position.

♦ The apo has an M48x0.75 connection thread on the camera side with a working distance of 55 mm to the camera. This allows you to connect all common cameras (astro cameras, system cameras and of course DSLR) with the appropriate T-ring.

♦ In addition, the Apo has an M69x1 female thread with a working distance of 66.5 mm. This allows you to realize individual adaptations. With our M69-M48 adapter with an overall length of only 1 mm, you thus gain more than 10mm for the connection of filter wheels, drawers, etc.

♦ The apo is equipped with a universal connection option with 360° rotation. This allows them to always position the object optimally in the camera.

♦ ACL200 Gen. 2: The telephoto lens can now be directly adapted to mounts with Vixen / EQ5 level quick couplers. In addition, the multi-function plate naturally offers the connection for photo tripods via the 1/4" or 3/8" thread.

♦ ACL200 Gen. 2: On the top is a flexible finder shoe with five clamping options and two screws. This allows you to attach Guidescope but also, for example, the ZWO ASIAIR.

♦ Of course, you can also use the Apo without restriction for landscape and wildlife photography. The results will inspire.

 

Construction type:	6-element flatfield APO lens
Lens:	4-element APO lens with 2 ED special glasses
Focal length:	200 mm
Focal ratio:	from f/4 to f/22 adjustable via aperture
Aperture:	maximum 50 mm
Camera mount:	M48x0.75 male thread
Working distance:	55 mm from thread to camera sensor
Additional thread:	M69x1 female thread - 66.5 mm working distance to focus
Weight:	1,5 kg
Length:	195 mm
Diameter:	100 mm
Focus range:	3 meters to beyond infinity
Focusing:	Normal setting and microfocus setting
Mounting:	Universal mounting plate with 360° rotation
Filter thread:	M82x0.75 filter thread

♦ Askar ACL200
♦ Dust caps
♦ Dew cap
♦ Transport container