Quick Summary: The remote shutter release is a critical component for DSLR/mirrorless astrophotography to help minimize camera movement. Let's look at why you need one for Astrophotography.
The Canon 80D is an advanced consumer model DSLR camera, great for everything from landscapes to portraits and especially astrophotography!
The Canon 450D is a consumer model DSLR camera, which offers great value for astrophotography without breaking the bank!