Crusing through Aquila - Comet Lemmon (Rob Johnson)

Contains: Solar system body or event

Crusing through Aquila - Comet Lemmon

The evening wasn't going to be so good for deep sky imaging with advancing high clouds so I thought I would have a look at Comet C/2023 H2 (Lemmon) which was heading south through Aquila. I was amazed at how fast the comet was moving so at my focal length I could only manage a 10s exposure before the motion showed. The video was taken over 47 minutes. The last time I remember an object moving so fast was Eros in 1975 which had a particularly close approach. Through the telescope I could see it moving against the starry background over a few minutes.

Revision B is a stack of 232 frames each with stars removed and stacked on the comet, you can just about see the tail pointing upward to about 10 o'clock. The trails are artefacts left by StarNet2 after star removal.

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Crusing through Aquila - Comet Lemmon

Crusing through Aquila - Comet Lemmon

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