Optolong

Optolong H-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducin...

Technical Data Schott substrate material Thickness 2.0mm Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished to ensure accurate ...

Sizes 2" Mounted Specifications CWL(centre wavelength): 656.3nm Fwhm: 7nm Tpeak: <85% Coating Wavelength: 300-1100nm Optical Denisity: OD3 Su...

Here's a cool comparison with a HyperStar C9.25 using no filter, a L-Pro Light Pollution Filter, and the new L-eNhance Filter from Optolong. The L...

L-eXtreme is a two 7nm bandpass filter which can be used with one-shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is a...

Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) ...

Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) a...

Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) a...

1.  L-Pro 1.1 Introduction In suburban areas with weak light pollution, the color balance is good. The design of multi-band pass ensures excellent ...

OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. Gap between green an...

OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with...

Main Use and Performance Use with H-alpha and OIII-CCD extra narrowband filters (SHO Set) for tricolor CCD astrophotography Narrowband imaging wi...

The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects. The UHC (Ultra High Contrast) bro...

It is used on a digital camera and the video, which do not have an IR protection filter toward an image sensor or were remodeled. This is important...

It is used on a digital camera and the video, which do not have an IR protection filter toward an image sensor or were remodeled. This is important...