Astronomik MaxFR OIII 6 nm CCD 1.25" (M28.5) Round Mounted Filter

Astronomik MaxFR OIII 6 nm CCD
1.25" (M28.5) Round Mounted Filter

• The MFR coating allows this 6 nm oxygen filter to be used on all instruments down to f/2

• The MaxFR filter line by Astronomik is designed for fast optical systems (RASA, Epsilon, and other astrographs)

• Best out-of-band blocking possible from ultraviolet (UV) through infrared (IR)

• Experience very high contrast with no haloing

• German engineering, made in Germany

About the Astronomik MaxFR 1.25" OIII 6 nm CCD Filter

This Astronomik MaxFR 1.25" Round Mounted OIII 6 nm CCD Filter is the optimal narrowband filter for CCD astrophotography. With a 6 nm FWHM, this parfocal filter is ideal for standard CCD cameras, allowing very fast optics to be employed.

The MaxFR 6 nm OIII CCD 1.25" filter is suitable for imaging OIII nebulas both in conditions of light pollution or dark skies! Blocking all wavelengths from UV to infrared (including the emission lines of sodium/Na and mercury/Hg artificial lighting) except around 501 nm, the MaxFR OIII CCD provides increased contrast for the doubly ionized oxygen emitted by OIII nebulae. With an average of 95% transmission (90%+ guaranteed), this narrowband filter is a good choice for heavily light polluted observing sites, or for imaging faint objects in star-crowded regions of the night sky.

About the Astronomik MaxFR Filter Line

This high quality line of astrophotography filters uses a built-in MFR coating technique to produce the best out-of-band blocking possible, from the ultraviolet to the infrared. The MaxFR filter line by Astronomik is manufactured using an entirely new process specifically designed for fast optical systems and focal ratios. This results in extremely high contrast with no haloing!

Please note this filter must NEVER be used for solar observing or imaging. Doing so will cause permanent damage to your eyes.