Antlia Triband RGB Ultra filter 2 "is a three-range RGB filter designed to eliminate light pollution when photographing with monochrome and color (OSC) cameras and optical tubes with a maximum light intensity of f / 2.

The optical characteristics of the filter have been selected in a way that allows achieving excellent characteristics in the HSO palette while maintaining the natural balance between RGB channels, which due to the characteristics of CMOS matrices requires proper compensation of the signal intensity in the blue channel, for the sensitivity of sensors is usually much lower compared to the R and G channels.

This filter is also suitable for collecting the luminance signal when photographing dark nebulae with monochrome cameras, improving contrast and signal-to-noise ratio.

The most important features of the Antlia Triband RGB Ultra filter 2 "dual-range filter

• high transmission for Hα, OIII, SII and NII bands
• designed for cooperation with digital SLR cameras, as well as monochrome and color astronomical cameras
• Compatible with telescopes with a maximum aperture of f / 2 or dimmer
• optimized blue light transmission in relation to R and G channels

Technical parameters

• Filter type: RGB tri-band filter
• filter diameter: 2 "
• filter thickness: 2 ± 0.05
• filter shape: round
• maximum light of the optical tube: f / 2
• transmitted spectral lines: Hα, OIII, SII, NII
• location of the maximum peak transmittance (CWL) for the Hα band: 656.3 nm
• maximum transmission for the Hα band:> 92%
• location of the maximum peak transmittance (CWL) for band OIII: 495.9; 500.7 nm
• maximum transmission for the OIII band:> 92%
• location of the maximum peak transmittance (CWL) for the SII band: 671.6; 672.4nm
• maximum transmission for the SII band:> 92%
• location of the maximum peak transmittance (CWL) for the NII band: 658.3; 654.8 nm
• maximum transmission for the NII band:> 92%
• equivalent optical density for blocked lines:> OD4 (300 - 1100 nm)
• thread: M48x0.75

Kit components

• Antlia Triband RGB Ultra filter 2 "triple-range filter

Guarantee

24 months