เลนส์ถ่ายดาว Askar ACL200 200mm f/4 Full Frame Astrophotography Camera Lens #ACL200  (latest version)

• Askar 200mm f/4 manual focus lens especially designed for astronomical imaging
• Incorporates six elements in three groups including two ED elements to minimize chromatic aberration
• Easy to use, just like a manual-focus camera lens, with coarse and fine manual focus rings (requires 48mm T-ring adapter, sold separately)
• Includes rotable collar for framing images and a filter adapter for standard 2" astronomy filters
• Compact and lightweight form factor

Askar ACL200 is an optical device especially for optimizing the quality of astrophotography, while it also caters to the needs of ground imaging. It’s compact, lightweight and easy to operate, an ideal combination of astrograph and camera lens. The optical outcome is to be dramatically improved as the distortion around the edge and achromatic aberration are greatly controlled. Askar ACL200 will bring you sharp and excellent celestial images together with a better experience of exploration.

Dual focal adjustment for astrophotography. Coarse and fine (1mm) adjustment make your focal adjustment more quick and convenient. Built-in f/4 to f/22 adjustable aperture size enables Askar ACL200 an ingenuity also for ground imaging. Its focus distance is of 3 meters.

The world-first 200mm professional astrophotographic lens is designed with a similar appearance as an ordinary camera lens which features an integrated structure. It’s compact, light and easy to use.

Askar ACL200 is precisely designed to optimize the quality of sky imaging. This ingenious optical apparatus successfully gets rid of otherwise redundant optical accessories. You have no problem in operating ACL200 if you are familiar with ordinary cameras.

Improvements to the original ACL200

We did some modification on the old ACL200, hoping to improve our customers’ experience with it, which includes a standard Vixen dovetail base, a new-type mounting ring and two extra thumbscrews.

See clip below for changes to the original version:

Compared with the old mounting ring, the new ring has an extruding stalk for the installation of the dovetail base. And the new-added dovetail base is for many purposes of attachment like finders or ASI air controllers. Furthermore, the dovetail base can also go with a dual-connection of a controller and a finder as the length of which accommodates both accessories.

Features

You will no longer worry about the vagueness of the images stemming from vignette or achromatic aberration. Askar ACL200 full frame astrophotographic lens with built-in flattener can help you solve comatic or other aberrations. Relatively fast f/4 focal ratio can effectively shorten exposure time and reduce the astrophotographic burden of the equatorial mount due to long-time tracking.