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If you have removed the stock camera filters you will be able to gather in about five times the amount of Ha light than previously. I suggest you use the camera awhile before you think about 'more mods'. Shoot the main Ha targets (Eta Carinae, M42, Lagoon, etc) and you will be amazed at the difference.
The bayer matrix makes shooting narrowband a real torture because of the limited number of pixels available to collect light. Going to the mono mod of the sensor makes narrow band possible as every pixel is working, however it is a difficult mod to do and damage to the sensor is a real possibility; however your resolution improves significantly but so does your image capture and processing workload. As far as I know I have the only mono cooled Canon in Australia. at this time. You will need to consider filter investment and changing them and the need to refocus. Be aware that the longer sub times required of narrow band make cooling almost mandatory, as heat build up in multi long subs. The cold finger mod would be my suggestion as a mod to do before you go to filter shooting and it will improve your OSC on the way. Read Rowland's cooling thread.
Last edited by glend; 29-03-2016 at 08:50 AM.
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