Camera modification for astro imaging Updated on:  12 Dec 2018


Original low pass filter installed in front of CMOS blocks about 75% of H-Alpha light, and so this filter needs to be removed (or replaced) such that more H-Alpha light can be captured faster.



- Original low-pass filter blocks 75% H-alpha light

- Baader ACF/BCF filter allows 98% H-alpha light to pass through

- Thickness of Baader filter is same as EOS original low-pass filter, which will not affect auto-focusing for DSLR models


Baader ACF/ BCF filters for Canon DSLR

ACF I filter, #2459211, for Canon 300D ... HK$560 (in stock 現貨)

ACF II filter, #2459212, for Canon 350D, 10D, 20D, 30D ... HK$640 (accepting order 接受订货)

ACF III filter, #2459214, for Canon 5D ... HK$690 (in stock 現貨)

BCF filter, #2459213, for Canon other APS-C models ... HK$520 (in stock 現貨)

BCF2 filter, #2459214A, for Canon 5D Mk II/III, 6D ... HK$620 (in stock 現貨)


Service charge for original camera filter removal or replacement:

EOS / Nikon APS-C camera ... HK$580

EOS / Nikon / Sony A7 series full frame camera ... HK$680


Camera modification for Infra-red imaging

Remove original low pass filter, then install one of the below infra-red pass internal filters:

* Standard infrared (720nm)

* Enhanced infrared (665nm)

* Super color infrared (590nm)

* Super blue infrared

* Deep black & white infrared (830nm)

** Click here for infra-red photo details


** Please ask if you need more details