Neutral density(ND) filters are designed to reduce transmission evenly across a portion of a specific spectrum...
Optolong Clear focusing filter is designed to highly pass the visible spectral region 420-680nm at 98.5% trans...
UBVRI filters are not for astrophotography. In fact, they are used to do photometry. So it’s in a more scienti...
The LRGB filter set is designed for maximum contrast and with extremely high gradients for clear differentiati...
Moon & Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow 589...
Venus-U filter makes it possible to obtain photographs, CCD or video images in the UV-A (320-400nm) and observ...
IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging to produc...
Optolong L-eNhance provides an economical and practical solution for amateurs. It is a dual-band pass filter w...
Unlike the Optolong L-eNhance filter which is a tri-band (transmits Hb, Ha, and OIII), the L-eXtreme filter is...
Optolong UHC with narrower passband provides higher contrast. Thus it is more suitable for urban environment w...
Improved narrowband SII 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm ban...
Improved Narrowband OIII 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light cen...
![[2020 NEW] Optolong L-eXtreme dual-band astronomy narrow band filter](/uploads/images/20201221/085041169589dd54ef38ccce074839bc.jpg "[2020 NEW] Optolong L-eXtreme dual-band astronomy narrow band filter")
