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Baader LRGB filters

With the newly developed high quality filters specifically optimized for the new generation CMOS equipped astrophotography cameras, Baader Planetarium is raising the bar once again. Setting a quality standard which was astronomically priced at best or unavailable at worse! These filters are available as separate filters or in RGB or LRGB filter sets and all these filters feature the following specifications.

The new Generation of Baader CMOS-optimized filters features: 

  • Increased contrast, matched for typical CMOS quantum efficiency and s/n ratio
  • 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)
  • Life-Coat: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment

Life-Coat: Limited-Lifetime-Warranty for CMOS-optimized Baader filters

A Baader Planetarium exclusive. Filters incorporating Baader Planetarium’s Life-Coat technology are so durable that Baader Planetarium warrants the coatings for the life of the filter. Baader Planetarium has developed Life-Coat using materials and processes that result in coatings which will not degrade or fail for a lifetime. Life-Coat coatings resist moisture, temperature extremes, and are hardened to withstand normal cleanings.

Baader Planetarium guarantees their Life-Coat coatings will not peel, flake or physically degrade and will withstand repeated cleaning with fine optical cleaning equipment. The Limited Lifetime Warranty applies to the original purchaser and does not cover failure from mis-use, physical damage through improper handling, or improper cleaning.

To make a warranty claim, simply contact your retailer where you purchased the filter with proof of purchase (commercial invoice) and a detailed failure description. The dealer will then advise of the next steps.

Baader L-RGB-Filters

  • Baader CMOS RGB-R (595 – 690 mm) / RGB-G (490 – 580 mm) / RGB-B (400 – 510 mm) / RGB-L (420 – 685 nm) Bandpass Filter
  • Anti-reflection RGB filter (red/green/blue) with extremely high transmission of the respective color channel, thus simultaneously reducing stray light and reflections to an unprecedented level
  • Balanced RGB design allows subframes to be taken with the same exposure time – extremely important for automated imaging tasks
  • Baader CMOS UV/IR-Cut (420 – 685 nm) Bandpass / L-Filter provides 98% transmission over the entire visible spectrum from 420 - 685 nm
  • Reflex-Blocker hard coated and plane-optically 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 older CCD camera technologies

Individual L/R/G/B filter spectra

Baader RGB-R spectrumBaader RGB-G spectrumBaader RGB-B spectrumBaader RGB-L spectrum

Combined RGB and LRGB spectra

Baader RGB spectrumBaader LRGB spectrum

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