APM 2 inch coma-correcting telecentric 1.5x Barlow

by the well known physicist and optic designer Philipp Keller

Product variants

More about the product

APM 2 inch coma-correcting telecentric 1.5x Barlow

by the well known physicist and optic designer Philipp Keller

About 2 years ago APM Telescopes introduced the coma-correcting 2.7 times Barlow designed by Gerd Düring, which enjoys great popularity.

New design

When our customers asked for a 2 inch version with a smaller magnification factor APM Teleslescopes let the well known physicist and optical designer Philipp Keller calculate a new 1.6x Barlow.

All of today's knowledge was incorporated to optimize the optical design. The telecentric design prevents that the distance has to be individually adjusted for each eyepice. Just insert the eyepiece into the optional 2-inch adapter sleeve and automatically have the optimum distance.

Large Backfocus

As already for the Barlow by G. Düring the design was calculated to yield a large back focus, in order that it can be used as an optical glass path corrector with coma-correcting effect combined with binocular viewers.
The large back focus allows the use of an off-axis guider + filter + CCD to take photographs with full format chips.

Technical Details

  • magnification 1.5 x
  • coma correction
  • M54 x 0.75 male thread and M48 x 0.75 female thread (eyepiece/CCD side)
  • telecentric design with 4 lenses
  • works as optical path corrector 1.6 x for bino-viewers
  • large imaging field for full format chips
  • 100 % illuminated Image Circle : 30 mm diameter
  • outward focus shift: 96 mm
  • Distance end M54 Thread to Focus 95 mm

Astronomical telescopes up to 100 Euros
Astronomical telescopes between 100 and 200 Euros
Microscope offer up to 200 Euros



Discount

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7mm LACERTA Ultra Wide Angle FV=82 deg
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Delivery:
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Bp. shop:Continuously in stock
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Bp. shop:Continuously in stock
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