Camera modification for astro imaging Updated on:  17 Aug 2023

Original internal low pass filter (LPF) blocks about 75% of H-Alpha light, and so this filter needs to be removed such that more H-Alpha light can be captured.

Types of modification:

Astro imaging ... Remove internal low pass filter and replaced with internal UV/IR block filter, keeping or removing front dust cleaning filter (if any). CMOS sensor will be adjusted for proper infinity distance focusing if using camera lens.

Full spectrum ... Remove all internal filters. May need to install clear filter for proper infinity distance focusing if using camera lens, or for CMOS sensor protecting purpose. 

Baader ACF/BCF filters (UV/IR block, same as L filter)

ACF III filter (UV/IR block), #2459214, for Canon 5D ... HK$620 (in stock 現貨)

BCF filter (UV/IR block), #2459213, for all APS-C cameras ... HK$550 (in stock 現貨)

Astronomik L-3 filter (1mm thick) for all full frame cameras  ... HK$990 (in stock 現貨)

Astronomik Clear filter (1mm thick) for all full frame cameras  ... HK$660 (in stock 現貨)

Optolong UV/IR block filter (1mm thick) for APS-C cameras  ... HK$340 (in stock 現貨)

Optolong UV/IR block filter (1mm thick) for full frame cameras  ... HK$420 (in stock 現貨)

Optolong clear filter (1mm thick) for APS-C cameras  ... HK$280 (in stock 現貨)

Optolong clear filter (1mm thick) for full frame cameras  ... HK$320 (in stock 現貨)　

Service charge for LPF removal or replacement (filter cost not included):

APS-C camera ... HK$580

Full frame camera ... HK$680

Camera modification for Infra-red imaging

Remove all filters in front of CMOS, then install one of the below infra-red pass internal filter (filter cost not included):

* 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