[Eris (Gerard)]

Hi everyone,
Please excuse me if this sounds a silly question but I would like to get some clarification about taking Flat Frames.

I am on the understanding that the use of good Flats etc are very important to how the final image will appear.

My question is if I were to take a series of Flats after my initial set up can I use these files for the entire observing session and image several other objects around the sky providing the camera and same filter position on the scope are not moved?

Or, do I need to take a new set of Flats if I point the unaltered scope or camera at another object?

Thanks for your advice and recommendations in advance.