Baader 36mm Narrowband Filter Set - Ha, OIII & SII - Round Unmounted- DISCONTINUED

Baader 36mm Narrowband Filter Set - Ha, OIII & SII - Round Unmounted- DISCONTINUED   Discontinued
$495.00
Item # SB-BA-36NBSET
  • This set of three Baader 36mm Unmounted Narrow Band Filters is brought to you by SBIG, and includes a H-a, O-III and S-II filter.
  • The round, unmounted 36mm filters are made to fit the SBIG ST-8300 FW5 filter wheel.
  • Each filter is coated individually, permanently sealing the coating edges, in order to guarantee lifetime coating durability and uniformity.
  • Baader 36mm Unmounted Narrow Band Fitlers anti-reflection coatings are designed to prevent halos and balanced to prevent physical deformation of the optically flat substrates.
  • High consistency for bandpass centering, transmission, and out of band blocking.
Description

Details

Baader 36mm Narrowband Filter Set

CCD imagers will find Baader's Premium Narrowband CCD passfilters to deliver the absolute highest contrast deep sky images in H-Alpha, H-Beta, Oxygen III, and Sulfur-II, with the shortest exposures possible. Their ultra-narrow bandwidths have extremely high transmissions, while completely rejecting light pollution as well as the important blocking of longer wavelengths.

The high optical quality of the Baader narrowband filters guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard commercially precision polished filter substrates used by most other filter manufacturers.

In addition to their transmission properties, the Baader coatings were developed with another key goal in mind - eliminate the annoying reflections present in other narrowband astro-filters. To achieve this freedom from reflections, along with excellent out of band blocking, required careful design and testing of the coating stacks.

Coatings are professionally applied in Germany by the most sophisticated equipment available today, ensuring high consistency for bandpass centering, transmission, and out of band blocking. The anti-reflection coatings are designed to prevent halos and balanced to prevent physical deformation of the optically flat substrates. The ultra-hard ionbeam deposition ensures the coatings will never degrade from use or normal cleaning. Each filter is coated individually, permanently sealing the coating edges, in order to guarantee lifetime coating durability and uniformity. Baader mil-spec coatings won't degrade, peel or flake off, unlike the coatings of filters that have been simply cut out of pre-coated sheets of glass. This cutting operation leaves the coating edges rough and torn which enables penetration of moisture between the coatings and substrate.

Baader Planetarium Product Number: BA-36NBSET
Additional Information

Additional Information

SKU SB-BA-36NBSET
Manufacturer Baader
Type of Filter H-Alpha, Oxygen III, Sulfur II
Filter Usage Imaging
Single or Set? Filter Set
Filter Size 36mm
Filter Shape Round
Filter Mounted? Unmounted
Warranty 2 Year Warranty
Integral Transmission SEE CODE 39 *** SEE CODE 39
Peak Transmission SEE CODE 38 *** SEE CODE 38
Reviews
Included Items

Included Items

  • Baader Narrowband 36mm Filters - H-a, O-III and S-II- Round Unmounted
Questions & Answers

Product Questions

Hello. Is this filter set compatible with QHY Medium Seven-Position Motorized Filter Wheel for 36 mm Unmounted Filters? Thank you.
0
will the S2 and HA filter look different to the eye, I'm afraid i might get them confused if they look to similiar
-5
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