H-alpha f/3 Ultra-Highspeed-Filter (3.5nm) – CMOS-optimized

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H-alpha f/3 Ultra-Highspeed-Filter (3.5nm) – CMOS-optimized

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€ 266.00 Price excl. German VAT tax (19%): € 223.53

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Which side should face the telescope?
  • Baader H-alpha f/3 Ultra-Highspeed Filter – Premium Grade
  • 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for fast optical systems from f/3.4 to f/2.3
  • Specially designed for the special filter requirements when used with fast f/3 optics
  • 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

Baader Narrowband-/Highspeed Filter Selector

To make it easy for you in the future to decide which kind of Highspeed (or Narrowband) filter you need for your telescope, please check our Filter-Selector, that provides you the correct individual graph based on your entriest, in which you can find the perfect filter for your telescope by f/ration and central obstruction.

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€ 266.00 Price excl. German VAT tax (19%): € 223.53

Product Questions and Answers

Do you have a question about this product? Then we would like to ask you to first look through the existing questions and answers, most likely your question has already been answered and you will get the desired information much faster this way. Your question is not listed? Then please click on the button "Ask a question".

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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

182
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

51
What is the actual dimensions of your 65mm x 65mm filters, for instance, the Baader RGB R-Filter 65x65mm – CMOS-optimized
Question by: R. Paulson on Jan 31, 2024 6:24:00 AM | 1 Answer(s)

Rating of Question

2
What’s the optical thickness of the 2” filter? I’ve seen 3mm stated but on this page it says 2mm.
Question by: Daniel on Sep 10, 2023 7:11:00 PM | 1 Answer(s)

Rating of Question

1
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:
    Baader CMOS Optimized Filters: Unleashing the Full Potential of Astrophotography



    Baader Blogpost:
    New CMOS-optimized Baader Filters



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