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APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens

|, APM, Telescope Accessories, Barlow Lenses, Coma Correctors, and Focal Extenders|APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens

APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens

$407.00

4 in stock

APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens was designed by well known physicist and optical designer Philipp Keller. The telecentric design prevents the need for distance to be individually adjusted for each eyepiece.

4 in stock

Description

APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens

APM 2 Inch Coma Corrector Telecentric 1.5x Barlow Lens was designed by well known 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.

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Package Includes:

  • 1.5x Barlow Lens with 2″ Tube

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 95mm

Spot Diagram 1

 

Spot Diagram 2

Spot Diagram 3

Relative Illumination

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