UHC astronomical observation filter
UHC (Ultra High Contrast) ultrahigh Contrast nebula filter is a broadband filter in the astronomical filter series, which has an obvious role in filtering urban light damage, so it is also called UHC light damage filter. This filter selectively blocks light of certain wavelengths, especially artificial light (including mercury light and sodium light) and sky glow in nature, so that useful light emitted by nebula can be efficiently transmitted. This filter can be used in OIII (496nm and 500nm), H β (486nm), NII (654nm and 658nm), H α The transmittance near the (656nm) and SII (672nm) bands is extremely high, which can effectively improve the contrast of the nebula and show rich nebula details.
Size: Φ 28*2 Commonly used astronomical observations
filter
In recent years, more and more people like to observe and shoot the starry sky, but even if they go to the suburbs for shooting, as long as the lights are close to the city, they will inevitably be interfered by light damage. Some enthusiasts of astronomical photos simply go to places far away from cities to avoid light pollution. But for beginners, they don’t want to spend much time, so they can consider using filters to reduce the impact of time damage on photos, such as UHC filters.
1. UHC filter
Inventory status: spot
Technical indicators
0 ° incidence
Filter size: Φ 28X2
2. O-III filter
Inventory status: spot
Technical indicators
0 ° incidence
Central wavelength: 505+/- 5nm
Bandwidth: 25nm
Cut off range: 400nm-750nm
Cut off depth:>OD3
Transmittance: average>90%
Filter size: Φ 28X2
Please click the figure below for specific transmissivity
3、B-filter
Inventory status: spot
Technical indicators
0 ° incidence
Central wavelength: 450+/- 5nm
Cut off range: 400nm-1100nm
Cut off depth:>OD2
Transmittance: average>95%
Filter size: Φ 28X2, customizable
4、G-filter
Inventory status: spot
Technical indicators
0 ° incidence
Central wavelength: 542+/- 5nm
Cut off range: 400nm-1100nm
Cut off depth:>OD2
Transmittance: average>95%
Filter size: Φ 28X2, customizable
5、R-filter
Inventory status: spot
Technical indicators
0 ° incidence
Center wavelength: 646+/- 5nm
Cut off range: 400nm-1100nm
Cut off depth:>OD2
Transmittance: average>95%
Filter size: Φ 28X2, customizable
6、L-filter
Inventory status: spot
Technical indicators
0 ° incidence
Transmission range: 420-680nm
Cut off range: 740nm-1100nm
Cut off depth:>OD3
Transmittance: average>95%
Filter size: Φ 28X2, customizable
7. Anti light pollution filter
Inventory status: spot
Technical indicators
0 ° incidence
Transmission range: 480-505nm and 635-720nm
Cut off range: 400-460nm and 520-615nm
Cut off depth:>OD3
Transmittance: average>85%
Filter size: Φ 14X1.1, other sizes can be customized
