Astronomik OIII Filter – High Contrast for Nebulae Observation Size:Astronomik OIII visual SC Rear Cell (2"/24 TPI) You can select filters with

You can select filters with 12nm or 6nm bandwidth (FWHM) for the three most important emission lines in astrophotography: oxygen (OIII)

Typical transmission over 95% at the H-beta line

DSLR photography (MC modified): Good when paired with an IR-block filter

The Astronomik OIII-CCD Filter is ideal for imaging OIII nebulae from light-polluted locations or dark skies

1 x User manual

Astronomik OIII Filter – High Contrast for Nebulae Observation Size:Astronomik OIII visual SC Rear Cell (2"/24 TPI) You can select filters withAstronomik OIII Filter for Visual Observation of Nebulae The Astronomik OIII filter is specifically designed for the visual observation of gaseous and planetary nebulae. With its extremely narrow bandpass focused on the two OIII lines, it significantly enhances contrast, even in ideal viewing conditions. The Astronomik OIII filter is a must have tool for observing faint supernova remnants and planetary nebulae, often making the difference between