Astronomik OIII (Oxygen III) 6nm MaxFR Clip-in Filter (Full Frame Mirrorless)

Astronomik OIII 6nm Clip-in Filter.

• Connects and disconnects quickly with hardly any effort.

• Fits securely in the camera without stress.

• Filter use does not depend on any camera adjustments.

• An excellent filter for photographing the remnants of both supernovae and planetary nebulae.

• FWHM bandwidth is an extremely narrow 6 nm.

• 6 nm bandwidth MaxFR filters operate unconstrained from f/2.2 to f/1:8, with guaranteed performance data of around 90% peak transmission at f/2.

• Parfocal with all other filters produced by Astronomik.

• Offers complete scratch, aging and high humidity resistance via multi-layer coatings.

• Diffraction limited, this filter will not cause your telescope to experience a reduction in optical performance.

• Boasts superb German-designed optics!

More About the Astronomik OIII 6 nm CCD Filter

Whether imaging under ideally dark conditions, or in a heavily populated area with strong light pollution, for OIII emission line nebulae astrophotography, the Astronomik 6 nm OIII CCD is the optimal filter. Offers complete obstruction of artificial light sources such as mercury and sodium vapor, the principal light pollution culprits, along with natural skyglow and moonshine. This greatly highlights the contrast between OIII line (501 nm) objects and the sky background. With this OIII CCD filter, your imaging potential is significantly improved as greenish and blueish objects can now be photographed.

Using this filter guarantees 88% transmission or more at OIII (501 nm). This filter is made to Astronomik's exacting standards. While transmission ratings may vary between each filter, you are guaranteed a transmission rating greater than 88%, with a typical transmission rating of around 92-95% for the 6 nm OIII. The specific T-Max will be listed on the filter case. You can rest easy knowing that every unit is thoroughly tested and guaranteed to meet Astronomik's stellar benchmark of performance! This results in an incredibly dark background.

For imaging dim objects in regions of the Milky Way that are heavily crowded with stars, or for viewing in a severely light-polluted environment, the OIII CCD Filter from Astronomik is a fitting selection. The 6 nm FWHM is matched to enable excellent performance with CCD and CMOS sensors with extremely low dark current! The OIII 6 nm CCD also features new MFR coatings, allowing for use with all instruments up to f/4 with no loss in performance.

This filter is parfocal with all other Astronomik filters, a quality shared by all filters made by Astronomik. Even though it's only 1 mm thick, the Astronomik T-Mount OIII 6 nm Filter is remarkably resistant to damage caused by scratching, aging, and high humidity. This filter is also diffraction-limited to prevent any reduction in your telescope's optical performance. As with all Astronomik filters, the OIII 6 nm Nikon Z XL clip filter is delivered with a long-lasting plastic storage case of supreme quality.

Compatible Camera Bodies

• Canon EOS R
• Canon EOS R5 Mk I and II
• Canon EOS R6 Mk I, II and III
• Canon EOS R7
• Canon EOS R8
• Canon EOS RP
• Canon EOS Ra
• Nikon Z5 and Z5 Mk II
• Nikon Z6 Mk I, II and III
• Nikon Z7 Mk I and II
• Nikon Z8
• Nikon Z9
• Sony A7 Mk I, II, III, and IV
• Sony A7R Mk I, II, III, IV and V
• Sony A7S Mk I, II, and III

In most cases Clip-in Filters for cameras not listed above can be special ordered. Please email for availability and pricing.

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

***No returns are accepted if the original Astronomik package seal is broken or damaged.

***Coupon codes will not be accepted with the purchase of any Astronomik brand Clip-In Filters***

****Clip-in filters are not compatible wth the Canon RF 14mm f:1.4 RF lens unless the gel filter bracket is removed from the rear fo the lens.

Please email with any questions: info@spencerscamera.com