On-the-Fly (OTF) imaging
He zips across the sky, observing lots of different areas really fast.
Technical definition
A method of astronomical observation where a telescope is moved rapidly in a constant elevation while observing an area of the sky.
He zips across the sky, observing lots of different areas really fast.
A method of astronomical observation where a telescope is moved rapidly in a constant elevation while observing an area of the sky.