Baader H-alpha 2" unmounted (Ø 47,4 mm) f/2 Highspeed-Filter (6.5nm) for FCCT – CMOS-optimized

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Baader H-alpha 2" unmounted (Ø 47,4 mm) f/2 Highspeed-Filter (6.5nm) for FCCT – CMOS-optimized

# 2961153U

€ 230.00 Price excl. German VAT tax (19%): € 193.28

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1

  • 47.4 mm (2" w/o cell) x 2 mm Baader H-alpha f/2 Highspeed Filter – Precision Grade
  • 6.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for extremely fast optical systems from f/3.4 and faster
  • Specially designed for the special filter requirements when used with extremely fast f/2 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 planeoptically polished – with sealed coating edges (Life-Coat™)
  • Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
  • Optimized for modern CMOS cameras, but likewise excellent for CCD camera technologies

Product Questions and Answers

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What's the actual size of your 2" filters in "mm" with and without frame/ring? What step down adapter is suggested from a 52 mm to "-- mm"?
Question by: Waqas Ahmad on Oct 10, 2016 7:54:00 PM | 1 Answer(s)

Rating of Question

169
What are the threads and pitch of your 1.25" and 2" filters?
Question by: Anders G. on Sep 20, 2017 12:55:00 PM | 1 Answer(s)

Rating of Question

59
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Specifications

Additional Information

Manufacturer Baader Planetarium
SKU (#) 2961153U
EAN Code 4047825050977
Net weight (kg) 0.07
Suitable for f/ratio f/3.4 and faster
Transmission Range H-alpha
Filter Thickness (without cell) 2 mm
HBW (Halfbandwidth) 6.5 nm
CWL (Central Wavelength) 656,3 nm
AR-Coating Reflex-Blocker™ hard coated, planeoptically polished
Special Features CMOS-optimiert mit Life-Coat™
Filter size 47.4 mm (2" w/o cell)
Filter Usage CMOS, CCD, H-alpha
Filter mounted Unmounted
Type of Filter f/2 Highspeed
Single or Set? Single Filter
Filter shape round
FAQ
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