Baader CCD Narrowband-filterset 2" H-alpha 7 / OIII / SII for Full-Frame-CCD (H-alpha 7nm, O III 8.5nm und S II 8nm) (with LPFC) HK$4,890.00
Cyclops Optics LUX-Series IR 1.25" Pass=690nm HC/SS HK$680.00
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Cyclops Optics LUX-Series LRGB 1.25" Filter Set HK$880.00
Cyclops Optics LUX-Series LRGB Filter Set Available in 1.25" 36mm 2"
Cyclops Optics LUX-Series LRGB 2" Filter Set HK$2,080.00
Cyclops Optics LUX-Series LRGB 36mm Filter Set HK$1,680.00
Cyclops Optics LUX-Series LRGB Filter Set Available in 1.25" 36mm
Cyclops Optics LUX-Series UV/IR-Cut 2" (48mm) HK$680.00
Cyclops Optics LUX-Series UV/IR-Cut 48mm filter. Recommended for use with QHYCCD CMOS camera with double AR coating optical window. Available in 1.25" 36mm 2"
IDAS H-alpha Enhanced UV/IR Blocking Filter HK$1,450.00
IDAS LPS-D1 HK$1,350.00
IDAS LPS-D1 for Canon EOS Full Frame HK$2,200.00
IDAS LPS-D1 is a general purpose light pollution suppression filter optimized for modified digital cameras and one-shot cooled CCD. LPS-D1 reduces the red fog in LPS-P2 emphasizing Hα bright line nebula. Similar to...
IDAS LPS-P2 HK$1,390.00
IDAS LPS-V4 HK$1,450.00
Optolong 12nm Hydrogen-alpha CCD
Optolong 12nm hydrogen-alpha narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights. This filter covers the hydrogen...
Optolong 12nm Oxygen-III CCD
Optolong 12nm oxygen-III narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights. This filter covers the oxygen-III...
Optolong 12nm Sulphur-II CCD
Optolong 12nm sulphur-II narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights. This filter covers the sulphur-II...
Optolong 6.5nm Oxygen-III CCD HK$1,290.00
Optolong 6.5nm oxygen-III narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights. This filter covers the oxygen-III...
Optolong 6.5nm SHO Filters Set HK$3,450.00
Optolong 6.5nm SHO narrowband filters set is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights. This filter set includes a 7nm...
Optolong 6.5nm Sulphur-II CCD HK$1,290.00
Optolong 6.5nm sulphur-II narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights. This filter covers the sulphur-II...
Optolong 7nm Hydrogen-alpha CCD HK$1,290.00
Optolong 7nm hydrogen-alpha narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights. This filter covers the hydrogen...
Optolong CLS Clip-On Filter
Optolong CLS (City Light Suppression) is a dual-bandpass filter which selectively enhances emission from nebulas and suppresses the transmission of light pollution sources. CLS enhances the contrast of nebulas and reduce...
Optolong CLS-CCD HK$750.00
Optolong CLS-CCD (City Light Suppression) is a dual-bandpass filter which selectively enhances emission from nebulas and suppresses the transmission of light pollution sources. CLS-CCD enhances the contrast of nebulas and...
Optolong CLS-CCD Clip-On Filter HK$790.00
Optolong L Filter HK$350.00
Optolong Luminance (L) filter can be used with RGB filters or used as UV/IR cut filter. Highlights 95% transmission at passband Multi-layers anti-reflection coating Precise and sharp roll-off at off-band Infrared...
Optolong L-eNhance Filter 2" HK$1,820.00 HK$1,580.00
* Promotional Price HK$1,520 (US$199) until 30th June 2019 * ** FREE Shipping Applies! ** L-eNhance provides an economical and practical solution for amateurs. It is a dual-narrowband pass filter which has been designed...
Optolong L-Pro Clip Filter for Nikon D5100
Optolong L-Pro (L-Professional) is a multi-bandpass filter which selectively suppresses the transmission of light pollution lines. For example, mercury vapor lamps, high and low pressure sodium vapor lights and skyglow...
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