[Deepfieldastro (Adam)]

I've been doing my research about astromodding DSLR's but still have questions specifically regarding my setup (Nikon D5300 + Rokinon 14mm & 135mm lenses).

The DIY tutorial from lifepixel is very straight forward however I'm wondering which replacement internal filter to purchase from them?

I don't see a Ha internal replacement filter listed for sale, just the Ha conversion service they offer (living in Australia, not an option to send them my camera thus wanting to DIY)

Also does anyone have any good suggestions for light pollution clip in filters to use for Nikon d5300? Nikon's seem to luck out on the good filters