Comet C/2023 A3 (Tsuchinshan-ATLAS) on 13 Oct, as seen from the Sacramento mountains ...

Why Nostr? What is Njump?

TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️ /

npub1wk…3qzyy

2024-10-14 04:40:39

Comet C/2023 A3 (Tsuchinshan-ATLAS) on 13 Oct, as seen from the Sacramento mountains of southern New Mexico. (Elevation 9,000 feet.)

Look at that anti-tail!

1st image is a stack of 48 15-second exposures as twilight was fading. The sky brightness gradient makes it difficult to see all the faint features in the tail equally well. But the twilight colors are beautiful.

In the 2nd image software has subtracted away the sky brightness and color and contrast has been boosted a great deal.

The anti-tail is not only visible, it now is easy to see a central spine in it.

Note that many satellite/aircraft tracks are also visible. When I stacked the image I used a simple average algorithm and did not use any rejection algorithms. Rejection algorithms can remove most satellite trails, but when the image has a large sky gradient, you can sometimes get strange results.

Image covers 10 x 6.6 degrees.

Tomorrow, I need a wider lens.

#NewMexico #Comet #Astronomy #Astrophotography #Photography

Author Public Key

npub1wk47s4zspuqkm2ssq2yavpkhrzk7z8x4wwgvx58gahcrg42309xsj3qzyy

Show more details

Published at

2024-10-14 04:40:39

Kind type

1 Short Text Note

Event JSON

{ "id": "6e1f7938f396aa1f411b19b584eee779f933d501014f7b4a2d3e6f58e97b1e01", "pubkey": "75abe854500f016daa100289d606d718ade11cd57390c350e8edf0345551794d", "created_at": 1728880839, "kind": 1, "tags": [ [ "t", "comet" ], [ "t", "astrophotography" ], [ "t", "photography" ], [ "imeta", "url https://media.universeodon.com/media_attachments/files/113/303/907/271/691/045/original/5daddd11b0d0ae71.jpg", "m image/jpeg" ], [ "t", "astronomy" ], [ "imeta", "url https://media.universeodon.com/media_attachments/files/113/303/906/511/839/214/original/440b98a98379a266.jpg", "m image/jpeg" ], [ "t", "newmexico" ], [ "proxy", "https://universeodon.com/@KrajciTom/113303934696542836", "web" ], [ "proxy", "https://universeodon.com/users/KrajciTom/statuses/113303934696542836", "activitypub" ], [ "L", "pink.momostr" ], [ "l", "pink.momostr.activitypub:https://universeodon.com/users/KrajciTom/statuses/113303934696542836", "pink.momostr" ], [ "-" ] ], "content": "Comet C/2023 A3 (Tsuchinshan-ATLAS) on 13 Oct, as seen from the Sacramento mountains of southern New Mexico. (Elevation 9,000 feet.)\n\nLook at that anti-tail!\n\n1st image is a stack of 48 15-second exposures as twilight was fading. The sky brightness gradient makes it difficult to see all the faint features in the tail equally well. But the twilight colors are beautiful.\n\nIn the 2nd image software has subtracted away the sky brightness and color and contrast has been boosted a great deal.\n\nThe anti-tail is not only visible, it now is easy to see a central spine in it.\n\nNote that many satellite/aircraft tracks are also visible. When I stacked the image I used a simple average algorithm and did not use any rejection algorithms. Rejection algorithms can remove most satellite trails, but when the image has a large sky gradient, you can sometimes get strange results.\n\nImage covers 10 x 6.6 degrees.\n\nTomorrow, I need a wider lens.\n\n#NewMexico #Comet #Astronomy #Astrophotography #Photography\nhttps://media.universeodon.com/media_attachments/files/113/303/906/511/839/214/original/440b98a98379a266.jpg\nhttps://media.universeodon.com/media_attachments/files/113/303/907/271/691/045/original/5daddd11b0d0ae71.jpg\n", "sig": "7ced82475c53d9da402b33ebe3cca081307ce4cdb7fe581ca2a812621a05a41ccda0d197e57b50d2ce4a70318215a90e5e7250a3c74c65581f12ad2ce588c3b2" }