APOD: Comet Lemmon and the Deep Sky (2013 Jul 20)

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APOD: Comet Lemmon and the Deep Sky (2013 Jul 20)

Post by APOD Robot » Sat Jul 20, 2013 4:15 am

Image Comet Lemmon and the Deep Sky

Explanation: Now sweeping high above the ecliptic plane, Comet Lemmon has faded dramatically in planet Earth's night sky as it heads for the outer solar system. Some 16 light-minutes (2 AU) from the Sun, it still sports a greenish coma though, posing on the right in this 4 degree wide telescopic view from last Saturday with deep sky star clusters and nebulae in Cassiopeia. In fact, the rich background skyscape is typical within the boundaries of the boastful northern constellation that lie along the crowded starfields of the Milky Way. Included near center is open star cluster M52 about 5,000 light-years away. Around 11,000 light-years distant, the red glowing nebula NGC 7635 below and left of M52 is well-known for its appearance in close-up images as the Bubble Nebula. But the fading Comet Lemmon is not the only foreground object on the scene. A faint streak on the right is an orbiting satellite caught crossing through the field during the long exposure, glinting in the sunlight and winking out as it passes into Earth's shadow.

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Re: APOD: Comet Lemmon and the Deep Sky (2013 Jul 20)

Post by Beyond » Sat Jul 20, 2013 4:21 am

Well, comet Lemon hasn't faded too much. It still looks like a lime. :mrgreen:
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Re: APOD: Comet Lemmon and the Deep Sky (2013 Jul 20)

Post by Boomer12k » Sat Jul 20, 2013 9:46 am

That is such a nice wide field shot. I wish my set up did that. The comet still has a presence. All the Deep Sky Objects look great!
Thanks, and great work, Nick!

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Re: APOD: Comet Lemmon and the Deep Sky (2013 Jul 20)

Post by Anthony Barreiro » Mon Jul 22, 2013 9:03 pm

Lovely image! The differing distances of these objects give a truly humbling sense of scale, even though they're all in proud Cassiopeia! Cassiopeia has been rising into good view toward midnight, a harbinger of approaching Autumn, even though we're still enjoying Summer (in the northern hemisphere, as even the nitpickers can infer from the fact that we're talking about a northern circumpolar constellation!).
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Re: APOD: Comet Lemmon and the Deep Sky (2013 Jul 20)

Post by neufer » Mon Jul 22, 2013 9:27 pm

Click to play embedded YouTube video.
Anthony Barreiro wrote:
Lovely image! The differing distances of these objects give a truly humbling sense of scale, even though they're all in proud Cassiopeia! Cassiopeia has been rising into good view toward midnight, a harbinger of approaching Autumn, even though we're still enjoying Summer (in the northern hemisphere, as even the nitpickers can infer from the fact that we're talking about a northern circumpolar constellation!).
Melville Crump: The man said there was a certain
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