6.5nm F2 Highspeed-Filter-Set 2"
CMOS-optimized (H-alpha / O-III / S-II)
#2961663

The new Baader CMOS-optimized SHO 6.5nm Highspeed F/2 filters are precision-grade narrowband filters with high transmission at their respective emission lines. The Highspeed F/2 versions are specifically designed to work very well with modern highly-sensitive astronomy cameras and telescopes with extremely fast focal ratios around f/2 such as the Celestron RASA astrographs.


Specifications

• Transmission range
• H-alpha, O-III, S-II
• Central wavelength
• H-a - 656.3 nm, O-III - 500.7 nm, S-II - 671.7 nm
• Half bandwidth 6.5 nm
• Suitable for f/ratio f/3.4 to f/2
• AR-coating
• Reflex-Blocker hard coated, planeoptically polished
• Filter thickness 1.25", 2", 31 mm, 36 mm 2 mm (without cell), 6 mm with cell
• Filter thickness 50.4 mm, 50 x 50 mm, 65 x 65 mm 3 mm
• Filter size 1.25", 31 mm, 36 mm, 2", 50.4 mm round, 50 x 50 mm square, 65 x 65 mm square
• SKU 1.25" BA2961660
• SKU 31 mm BA2961661
• SKU 36 mm BA2961662
• SKU 2" BA2961663
• SKU 50.4 mm round BA2961664
• SKU 50 x 50 mm BA2961665
• SKU 65 x 65 mm BA2961666

$949

2 year Manufacturer's warranty

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