iOptron 7nm H-Alpha 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 Hydrogen-Alpha Narrowband Filter - 1.25"
Introducing the improved iOptron narrowband Ha (Hydrogen-alpha) filter, designed for nebula observation or CCD imaging! This filter isolates light at the wavelength of 656.3 nm, allowing you to reveal deep-sky objects like nebulae and star-forming regions. Typically, Ha filters are the first narrowband addition to an LRGB set for beginner imagers, who blend a black-and-white Ha image into RGB data: enhancing structural detail while maintaining a natural look. Isolating only Ha 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..
Narrowband filters don’t eliminate light pollution or make objects brighter. Instead, they enhance contrast by darkening the background sky relative to the nebula, making the nebulae stand out more clearly.
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 Hydrogen-Alpha Narrowband Filter - 1.25"
Introducing the improved iOptron narrowband Ha (Hydrogen-alpha) filter, designed for nebula observation or CCD imaging! This filter isolates light at the wavelength of 656.3 nm, allowing you to reveal deep-sky objects like nebulae and star-forming regions. Typically, Ha filters are the first narrowband addition to an LRGB set for beginner imagers, who blend a black-and-white Ha image into RGB data: enhancing structural detail while maintaining a natural look. Isolating only Ha 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..
Narrowband filters don’t eliminate light pollution or make objects brighter. Instead, they enhance contrast by darkening the background sky relative to the nebula, making the nebulae stand out more clearly.
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 Ha 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 Hydrogen-Alpha Narrowband Filter - 1.25"
Introducing the improved iOptron narrowband Ha (Hydrogen-alpha) filter, designed for nebula observation or CCD imaging! This filter isolates light at the wavelength of 656.3 nm, allowing you to reveal deep-sky objects like nebulae and star-forming regions. Typically, Ha filters are the first narrowband addition to an LRGB set for beginner imagers, who blend a black-and-white Ha image into RGB data: enhancing structural detail while maintaining a natural look. Isolating only Ha 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..
Narrowband filters don’t eliminate light pollution or make objects brighter. Instead, they enhance contrast by darkening the background sky relative to the nebula, making the nebulae stand out more clearly.
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 Ha Narrowband Filter
iOptron 7nm H-Alpha Narrowband Filter - 1.25" Mounted