Comet c2021 A1 Leonard
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Gregg Ruppel
Hi all:
Comet c2021 A1 Leonard rises just before dawn low in the northeast at about magnitude 12. It is expected to brighten as it passes us at 0.2 AU in December, and may become a naked eye comet: http://www.greggsastronomy.com/IMAGES/c2021-A1-Leonard-LRGB_101721.jpg Inverted, cropped: http://www.greggsastronomy.com/IMAGES/c2021-A1-Leonard_101721inv.jpg LRGB, 40 minutes total exposure from Dark Sky New Mexico. -- Clear skies, Gregg Visit my astronomy & astrophotography site http://www.greggsastronomy.com/
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Bernard Miller
Gregg,
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I love your comet images. To think this is how Messier got started. Bernard
-----Original Message-----
From: DarkSkyNewMexico@groups.io On Behalf Of Gregg Ruppel Sent: Sunday, October 17, 2021 11:00 AM To: undisclosed-recipients: Subject: [DarkSkyNewMexico] Comet c2021 A1 Leonard Hi all: Comet c2021 A1 Leonard rises just before dawn low in the northeast at about magnitude 12. It is expected to brighten as it passes us at 0.2 AU in December, and may become a naked eye comet: http://www.greggsastronomy.com/IMAGES/c2021-A1-Leonard-LRGB_101721.jpg Inverted, cropped: http://www.greggsastronomy.com/IMAGES/c2021-A1-Leonard_101721inv.jpg LRGB, 40 minutes total exposure from Dark Sky New Mexico. -- Clear skies, Gregg Visit my astronomy & astrophotography site http://www.greggsastronomy.com/ -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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Comet C/2021 A1 Leonard will cruise between the Whale (NGC 4631) and Crowbar (NGC 4656) Galaxies the morning of 24 November. The tail might split them on 25 November (Thanksgiving morning). This looks like a perfect field for about a 1m focal length telescope. The comet will be well up in the sky for two to three hours. However, the waning gibbous moon may be an issue.
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Dan Crowson
David,
My program is showing it being between them on the morning of the 24th but going away from being between them by the 25th. On my picture below, the comet would be below and to the left of N4656 at that time. Ignore the obscene tail. Starry Night Pro does that based on the estimated magnitude.
Here’s the view on the morning of the 24th. The small rectangle is my AT12RCT (2430mm or so) and the larger would be my AT90EDT refractor (610mm or so) with an APS-C sized chip.
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From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of David Elmore
Comet C/2021 A1 Leonard will cruise between the Whale (NGC 4631) and Crowbar (NGC 4656) Galaxies the morning of 24 November. The tail might split them on 25 November (Thanksgiving morning). This looks like a perfect field for about a 1m focal length telescope. The comet will be well up in the sky for two to three hours. However, the waning gibbous moon may be an issue.
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Gregg Ruppel
David
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Thanks for the heads up - hopefully A1 Leonard will continue to brighten over the next month! Here's SkyMap's plot of it on 11/23 to 11/24 (times are MST): 
Clear skies, Gregg Visit my astronomy & astrophotography site http://www.greggsastronomy.com/ On 10/26/2021 10:17 AM, David Elmore
wrote:
Comet C/2021 A1 Leonard will cruise between the Whale (NGC 4631) and Crowbar (NGC 4656) Galaxies the morning of 24 November. The tail might split them on 25 November (Thanksgiving morning). This looks like a perfect field for about a 1m focal length telescope. The comet will be well up in the sky for two to three hours. However, the waning gibbous moon may be an issue.
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