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Baader S-II 4nm Ultra-Narrowband Filter 36 mm - CMOS optimized

Ø 36 mm x 2 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution, minimizes...

Baader S-II 4nm Ultra-Narrowband Filter 2" - CMOS optimized

Ø 2" x 2 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution, minimizes...

Baader S-II 4nm Ultra-Narrowband Filter 50.4 mm - CMOS optimized

Ø 50.4 mm x 3 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution,...

Baader S-II 4nm Ultra-Narrowband Filter 50x50 mm - CMOS optimized

Ø 50 x 50 mm x 3 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution,...

Baader S-II 4nm Ultra-Narrowband Filter 65x65 mm - CMOS optimized

Ø 65 x 65 mm x 3 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution,...

Baader O-III 4nm Ultra-Narrowband Filter 2" - CMOS optimized

Ø 2" x 2 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution, minimizes...

Baader O-III 4nm Ultra-Narrowband Filter 1¼" - CMOS optimized

Ø 1.25" x 2 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution, minimizes...

Baader O-III 4nm Ultra-Narrowband Filter 31 mm - CMOS optimized

Ø 31 mm x 2 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution, minimizes...

Baader O-III 4nm Ultra-Narrowband Filter 36 mm - CMOS optimized

Ø 36 mm x 2 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution, minimizes...

Baader O-III 4nm Ultra-Narrowband Filter 50.4 mm - CMOS optimized

Ø 50.4 mm x 3 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution,...

Baader O-III 4nm Ultra-Narrowband Filter 50x50 mm - CMOS optimized

Ø 50 x 50 mm x 3 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution,...

Baader O-III 4nm Ultra-Narrowband Filter 65x65 mm - CMOS optimized

Ø 65 x 65 mm x 3 mm 4 nm FWHM, recommended for optical systems from f/10 to f/3.5 For highest contrast even at strongest light pollution,...

Baader H-alpha 3.5nm Ultra-Narrowband Filter 65x65 mm - CMOS optimized

Ø 65 x 65 mm x 3 mm 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5...

Baader H-alpha 3.5nm Ultra-Narrowband Filter 50x50 mm - CMOS optimized

Ø 50 x 50 mm x 3 mm 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5...

Baader H-alpha 3.5nm Ultra-Narrowband Filter 50.4 mm - CMOS optimized

Ø 50.4 mm x 3 mm 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5...

Baader H-alpha 3.5nm Ultra-Narrowband Filter 36 mm - CMOS optimized

Ø 36 mm x 2 mm 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5...

Baader H-alpha 3.5nm Ultra-Narrowband Filter 31 mm - CMOS optimized

Ø 31 mm x 2 mm 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5...

Baader H-alpha 3.5nm Ultra-Narrowband Filter 2" - CMOS optimized

Ø 2" x 2 mm 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5 Reflex-Blocker™...

Baader H-alpha 3.5nm Ultra-Narrowband Filter 1¼" - CMOS optimized

Ø 1.25" x 2 mm 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5...

Baader H-alpha / O-III / S-II 6.5nm Narrowband Filter-Set 65 x 65 mm - CMOS optimized

Ø 65 x 65 mm x 3 mm 6.5 nm FWHM Recommended for optical systems from f/10 to f/3.5 Reflex-Blocker™ hard coated Planeoptically polished...

Baader H-alpha / O-III / S-II 6.5nm Narrowband Filter-Set 50 x 50 mm - CMOS optimized

Ø 50 x 50 mm x 3 mm 6.5 nm FWHM Recommended for optical systems from f/10 to f/3.5 Reflex-Blocker™ hard coated Planeoptically polished...

Baader H-alpha / O-III / S-II 6.5nm Narrowband Filter-Set 50.4 mm - CMOS optimized

Ø 50.4 mm x 3 mm 6.5 nm FWHM Recommended for optical systems from f/10 to f/3.5 Reflex-Blocker™ hard coated Planeoptically polished...