iOptron 7nm OIII Narrowband Filter - 1.25" Mounted
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WARNING: iOptron filters are not safe for direct solar viewing. Never use them to observe or image the Sun, as this can cause permanent damage to both your eyes and equipment.
iOptron 7nm Oxygen III Narrowband Filter - 1.25"
Introducing the improved iOptron narrowband OIII (Oxygen III) filter, designed for nebula observation or CCD imaging! This filter isolates light at 500.7 nm and 495.9 nm, and is a blue-green color. Many images of planetary nebulae and supernova remnants are taken with H-alpha and OIII filters! They show strong structural details while maintaining natural colors that appear like an RGB image. Isolating only OIII emissions reduces artificial light, including mercury vapor that causes light pollution. This minimizes unwanted skyglow and helps manage light pollution interference, making your nebula images sharper and more contrast-rich.
Specifications:
- 1.25" round mounted filter for filter wheels similar to iOptron iEFW 5-Position Electronic Filter Wheel
- Can be used for a 1.25" eyepiece (M28.5x0.6)
- Multi-layer anti-reflection coating for high transmission
- High surface quality of 60/40
- Surface flatness <λ/4
- Parallelism 30"
Additional Info:
Filter Cell Specifications
D = Filter Cell Diameter = 31.2 mm / 1.23 in
T = Total Filter Height = 7.0 mm / 0.28 in
C = Filter Cell Height (Excluding Male Thread) = 5.0 mm / 0.2 in
M = Male Thread Length = 2.0 mm / 0.07 in
F = USABLE Female Filter Thread Length = Not threaded, so you cannot stack additional filters
S = Glass Substrate Thickness = 2 mm / 0.07 in
CA = Clear Aperture = 25.98 mm / 1.02 in
Other Information
- Country of Manufacture: China
iOptron 7nm Oxygen III Narrowband Filter - 1.25"
Introducing the improved iOptron narrowband OIII (Oxygen III) filter, designed for nebula observation or CCD imaging! This filter isolates light at 500.7 nm and 495.9 nm, and is a blue-green color. Many images of planetary nebulae and supernova remnants are taken with H-alpha and OIII filters! They show strong structural details while maintaining natural colors that appear like an RGB image. Isolating only OIII emissions reduces artificial light, including mercury vapor that causes light pollution. This minimizes unwanted skyglow and helps manage light pollution interference, making your nebula images sharper and more contrast-rich.
Specifications:
- 1.25" round mounted filter for filter wheels similar to iOptron iEFW 5-Position Electronic Filter Wheel
- Can be used for a 1.25" eyepiece (M28.5x0.6)
- Multi-layer anti-reflection coating for high transmission
- High surface quality of 60/40
- Surface flatness <λ/4
- Parallelism 30"
Additional Info:
Filter Cell Specifications
D = Filter Cell Diameter = 31.2 mm / 1.23 in
T = Total Filter Height = 7.0 mm / 0.28 in
C = Filter Cell Height (Excluding Male Thread) = 5.0 mm / 0.2 in
M = Male Thread Length = 2.0 mm / 0.07 in
F = USABLE Female Filter Thread Length = Not threaded, so you cannot stack additional filters
S = Glass Substrate Thickness = 2 mm / 0.07 in
CA = Clear Aperture = 25.98 mm / 1.02 in
- 1x iOptron 7nm OIII Narrowband Filter
WARNING: iOptron filters are not safe for direct solar viewing. Never use them to observe or image the Sun, as this can cause permanent damage to both your eyes and equipment.
iOptron 7nm Oxygen III Narrowband Filter - 1.25"
Introducing the improved iOptron narrowband OIII (Oxygen III) filter, designed for nebula observation or CCD imaging! This filter isolates light at 500.7 nm and 495.9 nm, and is a blue-green color. Many images of planetary nebulae and supernova remnants are taken with H-alpha and OIII filters! They show strong structural details while maintaining natural colors that appear like an RGB image. Isolating only OIII emissions reduces artificial light, including mercury vapor that causes light pollution. This minimizes unwanted skyglow and helps manage light pollution interference, making your nebula images sharper and more contrast-rich.
Specifications:
- 1.25" round mounted filter for filter wheels similar to iOptron iEFW 5-Position Electronic Filter Wheel
- Can be used for a 1.25" eyepiece (M28.5x0.6)
- Multi-layer anti-reflection coating for high transmission
- High surface quality of 60/40
- Surface flatness <λ/4
- Parallelism 30"
Additional Info:
Filter Cell Specifications
D = Filter Cell Diameter = 31.2 mm / 1.23 in
T = Total Filter Height = 7.0 mm / 0.28 in
C = Filter Cell Height (Excluding Male Thread) = 5.0 mm / 0.2 in
M = Male Thread Length = 2.0 mm / 0.07 in
F = USABLE Female Filter Thread Length = Not threaded, so you cannot stack additional filters
S = Glass Substrate Thickness = 2 mm / 0.07 in
CA = Clear Aperture = 25.98 mm / 1.02 in
Other Information
- Country of Manufacture: China
- 1x iOptron 7nm OIII Narrowband Filter
iOptron 7nm OIII Narrowband Filter - 1.25" Mounted