PGC Hunter: yes, there's a faint nebulosity, but I think is more like dust, rather then a molecular cloud.
Renormalized: call me strange, but I love dust

This type of dust anyway!
Mike: Yes, I think everyone focuses on the crab itself! I thought I would try this FOV to give it a different perspective from the usual! I'm pretty happy though as veins can be seen on the Crab so, that's a plus!
I'm resolute to image more dust!