Lunático Astronomía

Baader 3.5/4nm Ultra-Highspeed Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)

735,001.100,00

Clear

Available from Jul / 2021

Baader 3.5/4nm Ultra-HighSpeed F/2 – Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)

  • Baader H-alpha / O-III / S-II f/2 Ultra-Highspeed Filter SetPremium Grade
  • 3.5 / 4 nm FWHM (to harmonize the exposure time from H-alpha with O-III / S-II), recommended for extremely fast optical systems from f/3.4 to f/1.8
  • Specially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs
  • For highest contrast even at strongest light pollution:
        • minimizes star size,
        • emphasizes finest nebula detail
        • indispensable under Bortle 9/8/7/(6) skies
  • Reflex-Blocker™ hard coated and plane optically polished – with sealed coating edges (Life-Coat™)
  • Blackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim
  • Optimized for modern CMOS cameras, but excellent for CCD camera technologies

3 filters set:

  • H-alpha 3.5nm Ultra-Highspeed
  • OIII 4nm Ultra-Highspeed
  • SII 4nm Ultra-Highspeed

Wavelength(nm):

Technical Data:

FILTER SIZE 1 25 inch 2 inch 36 mm
MANUFACTURER Baader Planetarium Baader Planetarium Baader Planetarium
SKU (#) 2961680 2961683 2961682
EAN CODE 4047825104106 4047825104137 4047825104120
WEIGHT (KG) 0.18 0.20 0.19
COLOUR Black Black Black
TRANSMISSION RANGE H-alpha / O-III / S-II H-alpha / O-III / S-II H-alpha / O-III / S-II
FILTER THICKNESS (WITHOUT CELL) 2 mm 2 mm 2 mm
HBW (HALFBANDWIDTH) 3.5 nm (H-alpha) / 4 nm (O-III / S-II 3.5 nm (H-alpha) / 4 nm (O-III / S-II 3.5 nm (H-alpha) / 4 nm (O-III / S-II
CWL (CENTRAL WAVELENGTH) 656,3 nm / 500,7 nm / 671,7 nm 656,3 nm / 500,7 nm / 671,7 nm 656,3 nm / 500,7 nm / 671,7 nm
AR-COATING Reflex-Blocker™ hard coated, planeoptically polished Reflex-Blocker™ hard coated, planeoptically polished Reflex-Blocker™ hard coated, planeoptically polished
SPECIAL FEATURES CMOS-optimized with Life-Coat™ CMOS-optimized with Life-Coat™ CMOS-optimized with Life-Coat™
FILTER USAGE CMOS, CCD, H-alpha, O-III, S-II CMOS, CCD, H-alpha, O-III, S-II CMOS, CCD, H-alpha, O-III, S-II
FILTER MOUNTED Mounted (LPFC 6mm) Mounted (LPFC 6mm) Unmounted
TYPE OF FILTER f/2 Ultra-Highspeed f/2 Ultra-Highspeed f/2 Ultra-Highspeed
SINGLE OR SET? Filter-Set Filter-Set Filter-Set
FILTER SHAPE round round round

 


Available in other sizes and formats. If you do not find the size you want, contact us at info@lunatico.es.

Filter thread

Clip-Filter EOS APS-C, Clip-Filter EOS XL, 1,25", 2", Ø 27mm. unmounted, Ø 31, Ø 36, Ø 50, Ø 50mm. unmounted, 50x50mm., 65x65mm.

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