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Optolong
Optolong 2" L-Enhance
$229.00
L-eNhance filter for color CMOS or CCD color camera or DSLR Optolong L-eNhance is a dual-band pass filter which has been designed for DSLR (digital SLR), color CMOS and monochrome...
Optolong 2" L-Extreme
$309.00
Optolong L-eXtreme dual-band astronomy narrow band filter Unlike the Optolong L-eNhance filter which is a tri-band (transmits Hb, Ha, and OIII), the L-eXtreme filter is dual band that passes Ha...