Colour Magic 2-inch Duo-band C1 (Hα+OIII) Alt-Az Mount ) 82 Eye Relief (mm)

) 82 Eye Relief (mm) 19 Weight (lb / oz) 1

It offers greater flexibility and ease of use to meet diverse needs

1/10th wave mirror is tested with an interferometer to ensure quality

( Riser block sold on our official website is not intended for this purpose

Colour Magic 2-inch Duo-band C1 (Hα+OIII) Alt-Az Mount ) 82 Eye Relief (mm)The Colour Magic C1 2 inch Duo band filter is designed for advanced deep sky astrophotographers who are shooting emission nebulae, like the Orion Nebula (M42), Lagoon Nebula (M8), or the Ring Nebula (M57). Unlike most filters, which record a wide swath of the visible light spectrum, this filter only records the specific, brightest colors of glowing hydrogen gas (the H or Hydrogen alpha) in your cameras red channel, and oxygen gas (the O III or Oxygen