Hi all. I'm getting started into Astrophotography and I have been fortunate to come in possession of a Nikon D7000 DSLR. I've been experimenting with it doing landscapes, etc. I just need to find out how to set it up for long exposures.

So far I have set the mode onto "M" but I don't know how to find the "Bulb" feature.

Any advice would be greatly appreciated and thanked in advance.
Cheers