So how does this $25 DIY laser scanner measure up? Great, to be honest. Check out the video below to see how well his scanner works, and be sure to take a look through his second writeup (Google ...

133, No. 1022 (2021 April), pp. 1-11 (11 pages) We demonstrate the feasibility of determining magnitudes of stars on archival photographic plates using a commercially available scanner. We describe ...