Sunday, April 10, 2022

incorrect magnitude?

Heard from Judy B of Halifax.

As she entered her observation of Messier 40 into her logs, she noted that we stated the double star had a magnitude of 8.0. But she noted elsewhere that the individual stars are 9.65 and 10.10.

I said we will need to look into it...


After collating all our sources, and applying the combined magnitude calculation, I arrived at 8.4. Promised to change it.

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