Baader 6.5nm Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)

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Baader 6.5nm Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)

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€ 389.00 Price excl. German VAT tax (19%): € 326.89

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  • Baader H-alpha / O-III / S-II Narrowband Filter Set – Precision Grade
  • 6.5 nm FWHM, recommended for optical systems from f/10 to f/3.5
  • 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

We explicitly warn against observing the sun with a DeepSky 6.5 nm (equivalent to 65 Ångstroem) H-alpha narrowband filter, specialized solar chromosphere and prominence filters from SolarSpectrum start at 0.8 Ångstroem. Photographic experiments with a camera are theoretically possible, but by no means observe the sun with naked eyes – you endanger your eyesight!

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€ 389.00 Price excl. German VAT tax (19%): € 326.89

Product Questions

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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"?
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Question by: Waqas Ahmad on Oct 10, 2016 7:54:00 PM | 1 Answer(s)
What are the threads and pitch of your 1.25" and 2" filters?
32
Question by: Anders G. on Sep 20, 2017 12:55:00 PM | 1 Answer(s)
I am looking to buy narrow band filters to image nebulas. I am using the Skywatcher Newton Telescope OTA N 200/1000 DS f/5 in combination with either the Canon Ra camera or ZWO ASI 183 CMOS.
I prefer using the 2inch screw filters.
Is this the right filterset to go with or would you
0
Question by: Bert De Wilde on Oct 19, 2021 1:45:00 PM | 1 Answer(s)
Description

Details



This new generation of Baader CMOS-filters features:

CMOS-optimized Baader Filters
  • Increased contrast
  • Ever more narrow passbands
  • Reflex-Blocker coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
  • FWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s/n ratio
  • Identical filter thickness to existing standards, with utmost care for parfocality
  • Blackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter
  • Each filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed, read more)
  • Life-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment

  • Further information, test reviews, image results...

    Don´t be misled.

    These all new CMOS-optimized filters work magnificently with all existing digital camera technologies, be it CMOS or CCD. However – an owner of CCD-camera-technology will still find our previous, extremely affordable, narrowband filter technology to be fully apt for excellent imaging. But: "the Better always is enemy to the Good".

    ... can be found on our detailed Blogpost:

    Baader Blogpost:
    New CMOS-optimized Baader Filters

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