Baader SLOAN/SDSS z-s'-Filter – photometric

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Baader SLOAN/SDSS z-s'-Filter – photometric

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€ 140.00 Price excl. German VAT tax (19%): € 117.65

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  • Baader SLOAN-z-s' Bandpass Filter, suitable from f/15 to f/1.8
  • SLOAN/SDSS (ugriz’) photometric filter with transmission according to SLOAN-specification
  • Manufactured with most advanced ion beam coating technology / Daylight-Proof
  • 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
  • Equally suitable for modern CMOS cameras as well as for older CCD camera technologies

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€ 140.00 Price excl. German VAT tax (19%): € 117.65

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)

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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)

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100x100: I need to mount a much larger UV-or IR-filter onto my DSLR-lens than your regular astro 2" filters allow
Question by: FAQ - Team Baader on Nov 25, 2022 8:54:00 AM | 1 Answer(s)

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This new generation of Baader Filters features:

CMOS-optimierte Baader Filter
  • Reflex-Blocker coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
  • 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 telescope-sided black 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...

... can be found on our detailed Blogposts:

Baader Blogpost:
Amateur Astronomers take a look through the Cloud Cover of Venus with our SLOAN Filters

Baader Blogpost:
First Light with Baader SDSS filters by S. Ziegenbalg

Baader Blogpost:
Now available: New Baader UBVRI and SLOAN/SDSS (ugriz') Photometric Filters

Baader Blogpost:
New CMOS-optimized Baader Filters

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Apollo 91/04/2023 02/04/202304:32
  • Rating:
100mm x 100mm sloan Z'S filter- a must have for NIR fun!
I 3d printed a filter cell and labeled it with the appropriate filter identifier on the face of the plastic. The glass is measured precisely at 100mm x 100mm so 3d modeling this was a breeze. The filter is very nice to look at, with its holographic reflections between the alternated interference coatings.
When pointed at the sun, it appears pure white/golden and because of this i must use a secondary filter at the focuser to prevent color bleed.
  • The largest coated NIR filter size available on the market with the correct out of band blocking
  • the filter arrived very dirty, and are some defects are visible on the coating, that sort of look like wrinkles. The filter was nicely wrapped in white lint free tissue paper which means the factory process allows for dust to contaminate the glass surfaces. While it is okay an acceptable, it makes the very expensive filter appear very at first sight especially under bright light sources.
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