IDAS H-alpha Enhanced UV/IR Blocking Filter HK$1,450.00
IDAS LPS-D1
IDAS D1 discontinued and sold out. For multiple bandpass light pollution filtering, we recommend: STC Astro-Multispectra Optolong...
STC Astro-Multispectra Filter 48mm / 77mm + FREE Shipping + FREE LensPen HK$1,640.00
Exclusive offer from Cyclops Optics: Besides the usual FREE Shipping Offer for most countries worldwide, now we further offer a FREE LensPen (original value US$11), allowing you to clean the surface of your...
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 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 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 L-Pro for Canon DSLR (FREE International Shipping + FREE LensPen) HK$1,590.00
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...
Optolong UHC Clip Filter for Canon DSLR HK$740.00
Optolong UHC (Ultra High Contrast) is a light pollution filter for use in severely light polluted urban area. It selectively enhances emission from nebulas and suppresses the transmission of light pollution sources. UHC...
Optolong UHC HK$440.00
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 L-Pro Filter 1.25" / 2" (48mm) (FREE International Shipping + FREE LensPen) HK$1,290.00
Optolong LRGB Filters HK$1,490.00
Optolong LRGB filter set is designed for maximum contrast and sharp roll-off between colour bands for clear differentiation of colours. The LRGB set covers luminance, red, green and blue. Among these passbands, OIII...
QHYCCD 12 mm LRGB / S-II / H-alpha / H-Beta / O-III / CH4 HK$390.00
Complete line-up of 12mm diameter round filters designed by QHYCCD and made specifically for miniCAM5F. Ì´å´_ÌÎå£30 discount when narrowband filters are bought as a set. Just select "Narrowband Set (S-II, H-a,...
Antlia V-series LRGB PRO Filters 2" (48mm) HK$3,680.00
Antlia brand new PRO version of the V-series LRGB filters. Improved halo suppression capability.
Antlia V-series LRGB PRO Filters (36mm Round Unmounted) HK$2,880.00
Antlia V-series LRGB PRO Filters (50.3mm Round Unmounted) HK$4,650.00
New Antlia V-series LRGB Pro Filters 1.25" HK$2,340.00
The Antlia LRGB-V Pro series filters are designed for monochrome cameras that use both CCD and CMOS sensors. Suitable sensors include KAF/KAI sensors, Sony IMX sensors, GSENSE and other sensor manufacturers...
Antlia V-series LRGB Filters 2" HK$2,780.00
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Antlia V-series LRGB Filters 36mm (Discontinued) HK$2,350.00
Antlia V-series LRGB 50mm Round Unmounted Set HK$3,180.00
Antlia V-series L Filter 2" (48mm) HK$695.00
Antlia V-series LRGB + 3.0nm Ha + 3.5nm S-II & O-III 2" Set
Choose your new versions of Antlia SHO narrowband filters below: Antlia 3.0nm S-II PRO – 1.25", 36mm, 2" (48mm), 50mm Antlia 3.0nm Ha PRO – 1.25", 36mm, 2" (48mm), 50mm Antlia 3.0nm O-III PRO – 1.25",...
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