O-III Filters

The O-III line at 501nm is an important emission line of many Nebula objects and SN remnants. An extreme background contrast can be achieved even in urban areas with narrow-band filters.
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The Altair Astro Premium Oiii 6.5nm filter is designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting out the light pollution wavelengths. The filter blocks UV IR and has an anti-reflection AR coating.
255.00 € 229.00 €
Estimated delivery time : 2-4 weeks
 
 

Antlia 1.25" 3 nm O-III ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

  • 1.25" mounted with low-profile filter cell
  • Suitable for telescopes and lenses with a focal ratio of f/3 and lower
  • Schott optical base substrate
  • Blackened edges to avoid internal reflections
  • Extremely narrow bandwidth of only 3 nm for maximum contrast
  • Central wavelength 500,7 nm
  • Filter thickness 2 mm
  • Comes in convenient plastic transport box
419.00 €
Estimated delivery time : 1-4 days
 
 

Antlia 2" 3 nm O-III ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

  • 2" mounted with low-profile filter cell
  • Suitable for telescopes and lenses with a focal ratio of f/3 and lower
  • Schott optical base substrate
  • Blackened edges to avoid internal reflections
  • Extremely narrow bandwidth of only 3 nm for maximum contrast
  • Central wavelength 500,7 nm
  • Filter thickness 2 mm
  • Comes in convenient plastic transport box
655.00 €
Estimated delivery time : 1-4 days
 
 
The Astronomik 12 nm OIII CCD  filter 1.25" is an extremely narrow emission-line filter for CCD photography
139.00 € 125.00 €
Estimated delivery time : 1-2 days
 
 
The Astronomik 12 nm OIII CCD  filter 2" is an extremely narrow emission-line filter for CCD photography
299.00 € 269.00 €
Estimated delivery time : 1-2 days
 
 
The Astronomik 12 nm OIII CCD  filter Clip EOS APS-C is an extremely narrow emission-line filter for CCD photography
199.00 € 179.00 €
Estimated delivery time : 3-4 days
 
 
The Astronomik 12 nm OIII CCD  filter Clip Filter EOS XL is an extremely narrow emission-line filter for CCD photography
312.00 € 281.00 €
Estimated delivery time : 3-4 days
 
 
The Astronomik 6 nm OIII CCD  filter 1.25" is an extremely narrow emission-line filter for CCD photography
199.00 € 179.00 €
Estimated delivery time : 3-4 days
 
 
The Astronomik 6 nm OIII CCD  filter 2" is an extremely narrow emission-line filter for CCD photography
489.00 € 440.00 €
Estimated delivery time : 3-4 days
 
 
The Astronomik 6 nm OIII CCD  filter Clip EOS APS-C is an extremely narrow emission-line filter for CCD photography
299.00 € 269.00 €
Estimated delivery time : 3-4 days
 
 
The Astronomik 6 nm OIII CCD  filter Clip Filter EOS XL is an extremely narrow emission-line filter for CCD photography
499.00 € 449.00 €
Estimated delivery time : 1-4 days
 
 
Astronomik OIII-CCD Filter with 12 nm FWHM in 1,25".
179.00 € 161.00 €
Estimated delivery time : 3-4 days