Active Region 2887
Bipolar group with penumbra around both leading and trailing spots. Group is less than 10 degrees length (see Stonyhurst diagram to measure).
Largest spot has a symmetric penumbra less than 2.5 degrees.
Very few or no spots between leader and follower.
Classification: Dso
Skywatcher 120mm f/7.5 refractor with Baader Hershel safety wedge. Explore Scientific x3 focal extender.
Active Region 2887
Bipolar group with penumbra around both leading and trailing spots. Group is less than 10 degrees length (see Stonyhurst diagram to measure).
Largest spot has a symmetric penumbra less than 2.5 degrees.
Very few or no spots between leader and follower.
Classification: Dso
Skywatcher 120mm f/7.5 refractor with Baader Hershel safety wedge. Explore Scientific x3 focal extender.