jb sidgwick and his comet magnitude method

[Denis Buczynski]

You may want to watch the talk I gave at the BAA Comet section meeting about comet magnitudes which mentions “the Sidgwick method. Here is the youtube link;

https://www.youtube.com/watch?v=S8I3TdaUjxY&list=PLzBTybazXT40groFEC3zg4uVLFFGdApQL&index=4