Baader H-alpha Narrowband-Filters (6.5nm) – CMOS-optimized

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Baader H-alpha Narrowband-Filters (6.5nm) – CMOS-optimized

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€ 139.00 Price excl. German VAT tax (19%): € 116.81

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Which side should face the telescope?
  • Baader H-alpha Narrowband Filter – Precision Grade
  • 6.5 nm FWHM, recommended for optical systems from > f/3.4
  • 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!

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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€ 139.00 Price excl. German VAT tax (19%): € 116.81

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

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

52
Please what is the material of the filter? Plastic, Glass etc..
Question by: Rastislav on Nov 21, 2022 4:47:00 AM | 1 Answer(s)

Rating of Question

4
Is the filter H-alpha 1¼" Narrowband-Filter (6.5nm) CMOS optimized (ref. 2961100) suitable equal with CMOS cameras Monocrome and Color? Thanks.
Question by: Enric Sánchez on Nov 1, 2023 10:05:00 AM | 1 Answer(s)

Rating of Question

2
For visual solar observations, could a H-alpha narrowband filter be used safely with a 4.5" refractor fitted with a Herschel wedge (white light solar observing)?
Question by: H E Palmer on Oct 25, 2023 12:04:00 AM | 1 Answer(s)

Rating of Question

0
I own a Canon 6D Mark II that does not have an H-alpha clip because the mirror is too close to the body. So, can I stack a Baader H-alpha filter to my 2 inch Baader Neodymium IR Cut Skyglow filter as an alternate solution effectively? If not, what else could I do?
Question by: Dale Shunk on Feb 16, 2023 6:55:00 PM | 1 Answer(s)

Rating of Question

-7
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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