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Comet Nishimura at Dawn (Sept 7, 2023) (135mm Portrait).jpg
Comet Nishimura (C/2023 P1) captured at dawn on September 7, 2023 with the sky brightening with morning twilight colours. The comet was set amid the stars of the Sickle asterism of Leo the Lion, just rising in the east. The comet sports a faint blue ion tail, with the comet seemingly pointed toward the sunrise point; it was moving down and closer to the Sun at this time.
The star Adhafera (Zeta Leonis) is at left. Mu and Epsilon Leonis are above the comet, at 4th and 3rd magnitude respectively. So the comet head was about 3rd magnitude or brighter. The ion tail was about 3° long here but fades into the twilight sky.
This is a stack of 6 x 24-second exposures, all tracked, with the Canon RF135mm lens at f/2.2 and Canon R5 at ISO 400, blended with a single but still tracked image for the ground and horizon clouds to minimize their blurring. All on the Star Adventurer Mini tracker.
The star Adhafera (Zeta Leonis) is at left. Mu and Epsilon Leonis are above the comet, at 4th and 3rd magnitude respectively. So the comet head was about 3rd magnitude or brighter. The ion tail was about 3° long here but fades into the twilight sky.
This is a stack of 6 x 24-second exposures, all tracked, with the Canon RF135mm lens at f/2.2 and Canon R5 at ISO 400, blended with a single but still tracked image for the ground and horizon clouds to minimize their blurring. All on the Star Adventurer Mini tracker.
- Copyright
- © Alan Dyer/AmazingSky.com
- Image Size
- 5460x8190 / 9.5MB
- www.amazingsky.com
- Contained in galleries
- Comets

