Observation by Mike Olason: The Moon was 94% illuminated on the morn...

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BAA Comet Section

Observer

Mike Olason

Observed

2025 Apr 15 - 11:44

Uploaded

2025 Apr 19 - 09:25

Objects

C/2025 F2

Full filename

2025f2/2025f2_20250415_1144_molason.jpg

Target name

C/2025 F2

Title

The Moon was 94% illuminated on the morning of 2025 April 15 UT, Comet C/2025 F2 (SWAN) was magnitude G=9.4 as calculated from 6x20 second images thru a green filter in an aperture diameter of 3.5'. The coma was 3' wide, the wavy tail in the image FOV was 53' long at a position angle of 309 degrees from the coma. The comet has been quiet the past week, with a brightness staying around magnitude 8.9 to magnitude 9.4, but the comet certainly does have a nice thin wavy tail that extends about twice as long as shown in this set of images.

About this image
The Moon was 94% illuminated on the morning of 2025 April 15 UT, Comet C/2025 F2 (SWAN) was magnitude G=9.4 as calculated from 6x20 second images thru a green filter in an aperture diameter of 3.5'. The coma was 3' wide, the wavy tail in the image FOV was 53' long at a position angle of 309 degrees from the coma. The comet has been quiet the past week, with a brightness staying around magnitude 8.9 to magnitude 9.4, but the comet certainly does have a nice thin wavy tail that extends about twice as long as shown in this set of images.
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