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. |
Page last updated: Sat 19 Apr 10:35:16 BST 2025