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

More Views

Images uploaded by Customers

No customer Image uploads yet. Add Your Review with Images
Baader 6.5nm Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)

Please choose product variant below to see price and SKU number

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

Please choose product variant below to see stock status  

0

  • Baader H-alpha / O-III / S-II Narrowband Filter Set – 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.

* Required Fields

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

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".

Sort by ASC
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

170
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

60
I would like to know if these 1.25 filters fit the ZWO filter wheel
Question by: Alfredo on Dec 11, 2022 4:18:00 PM | 1 Answer(s)

Rating of Question

10
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
Question by: Bert De Wilde on Oct 19, 2021 1:45:00 PM | 1 Answer(s)

Rating of Question

5
I want to know if the thickness of these filters ads some extra space between a Focal Reducer with 55mm of backfocus and the sensor of my
camera. I purchased your 31mm narrowband filters (2mm thick). In case it does, I have calculated that this space would be about 0.6mm. Would this extra space be negligible if I wanted to get the most of my imaging train?

Thank you very much for your help,

Jordi
Question by: Jordi on Mar 14, 2022 4:04:00 PM | 1 Answer(s)

Rating of Question

3
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



    Related Articles
    Specifications

    Additional Information

    Technical Data not yet specifiedPlease choose product variant from dropdown above to see technical data of your chosen product
    FAQ
    Downloads
    Reviews

    You may also be interested in the following product(s)

    Tell us what you think about this item!

    Write A Review
      Please, wait...