APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens

APM SKU: APM-Komakorr-Barlow2
APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens
APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens

APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens

APM SKU: APM-Komakorr-Barlow2
Regular price $407.00
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APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens was designed by physicist and optical designer Philipp Keller. The telecentric design prevents the need for distance to be individually adjusted for each eyepiece.

APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens


APM Barlow Lens were designed by physicist and optical designer Philipp Keller. The Telecentric 4 lens design prevents the need for distance to be individually adjusted for each eyepiece. Optimum distance is automatically achieved by simply inserting the eyepiece into the included 2" adapter sleeve.

Calculated to yield a large back focus when used as an optical glass path corrector with coma-correcting effect combined with binocular viewers. The large back-focus also allows the use of an off-axis guider + filter + CCD to take photographs with full format chips.



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 1.5 x, 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.


Product Specifications:


Coating: Fully multi-coated
Filter thread: 2″
Magnification: 1.5x
Optical design: 2 achromatic lenses
Back focus: 105 mm (from center last lens)
Fully corrected field: 44mm
Fully illuminated field: 44mm
100 % illuminated image circle: 30mm diameter
Outward focus shift: 96mm
Distance end: M54 - Thread to Focus 95mmWhat Are Barlow Lenses

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