Messier 97 (HOO)


Messier 97, also know as the Owl Nebula, is a planetary nebula in Ursa Major. It’s tiny, only a bit over three arc minutes across, making it about 1/10 the apparent diameter of the full moon. Even for a long focal length telescope like this one it end up being a fairly tiny part of the field.

I see different distance estimate but the mean seems to be around 2,400 light years.

This is 19 hours of HOO data.

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