It is designed for light pollution suppression for OSC and Mono cameras.
The
spectral design selected the most substantial information in the RGB
bands, which makes Antlia Triband RGB Ultra Filter possible to shoot
over 90% of deep sky objects, in addition to its excellent performance
on emission nebula, different from other ultra-narrowband filters, it is
able to capture galaxies, reflection nebulae, and star clusters from a
Bortle 8 location to Bortle 1 while presenting more balanced RGB colors
in your images. Also, it has a broad bandpass designed to cope with
faster optics up to the f/2 focal ratio.
The quantum efficiency of the B
channel in current CMOS sensors is often significantly lower than that
of R and G channels. Antlia team was to provide a filter with a more
realistic color balance for astrophotography from light polluted
locations. The problem with the low blue wavelength efficiency becomes
apparent when imaging reflection nebulae and blue stars. In CMOS
sensors, the blue wavelengths also contain contribution from the
stronger green spectrum, thereby affecting the balance of the blue
colours. Many popular imaging objects contain reflection nebula with
faint blue hues such the central part ofNGC2264. Therefore, we designed
Antlia Triband RGB Ultra Filter that not only retains the HSO emission
signal but alsoincreases the amount of Luminous flux of the blue B
channel. By improving the blue wavelength transmission, the color of
thephoto is better balanced and easier to manage in post processing.