telephoto lens for astrophotography

telephoto lens for astrophotography
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With the FMA230, Askar has created a powerful triplet APO refractor with unique visual and photographic application possibilities

  • In just a few steps, the APO telephoto lens becomes a compact astronomical telescope, a guiding tube or a powerful spotting scope for landscape observation.
  • Aperture 50 mm
  • Triplet ED lens with two APO elements for a color-pure image
  • Photographic focal length 230 mm (with 4-element corrector) - focal ratio f/4.6
  • Focal length for observation 275 mm
  • The photographic field of view is designed up to full format
  • Precise helical focuser on the lens for accurate focusing - with lock
  • Weight 1045 grams
  • Practical M48 mount with 55 mm working distance (as telephoto lens)
  • Suitable for 1.25" and 2" accessories for visual observation
  • Vixen / EQ5 style multifunction plate
  • Very well suited for mobile astrophotography with photo trackers like the Skywatcher Adventurer
  • Also suitable as a powerful guiding telescope
  • With a few simple steps the FMA230 becomes a compact spotting scope for observing with 1.25" or 2" accessories
899.00 €
Estimated delivery time : 1-4 days

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

  • Focal length 200 mm / focal ratio f4 / aperture 50 mm
  • Fully-fledged astronomical APO optics with integrated field flattening - illumination and correction up to full frame size
  • Image free of chromatic aberrations and reflections
  • Fine focus mode (front ring) for exact 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, so all common cameras can be connected
  • Working distance 66.3 mm from the M69x1 female thread for individual adaptations
  • Screw-in option for 2" filter
  • Focusing range from 3 meters to beyond infinity
  • Including dew cap and stray light protection - screwed
  • Gen. 2 with universal viewfinder shoe and multi-function adapter plate for photo tripods and EQ5-level quick release.
945.00 €
Estimated delivery time : 1-4 days