Using a Canon T3i with full-spectrum mod and IDAS UV/IR cut filter?

[Rudy Pohl]

Due to the amazing generosity of a good friend I now am the happy owner of Canon T3i that has been full-spectrum modded and has an IDAS UV/IR cut filter in it to maintain focusing ability on regular photography lenses, which is what I use for AP.

 

All my gear up until now has been Nikon and I have been using an unmodded Nikon D5500 for astrophotography with a Nikon 300/F4 ED IS lens as my main DSO optic. I have just purchased a recommended, good quality Nikon F-mount to Canon EOS lens adapter so I can use my Nikon lenses on the T3i. Here's hoping that it will work out well.

 

QUESTIONS:

How should I acquire Ha-rich images with my modded T3i so I can add them to my RGB images taken with my stock Nikon D5500? Should I simply take the Ha images with the modded T3i as it is, or should I additionally add some kind of special Ha filter to to it as well, and if so, which filter?
 

Can I do narrowband astrophotography with this T3i, and if so, how do I do that and what filters, holders, adapters should I get? There is already a clip-in filter in the camera body enabling focusing so I presume any additional filter must be somehow be screwed onto the front of the lens. As you can see, I really don't know very much about this kind of stuff.

Thanks very much for your help.

 

Best regards,
Rudy