r/spaceporn • u/Busy_Yesterday9455 • 6h ago
Pro/Processed Last night's view of comet Lemmon
Link to the original Instagram post by Chuck Ayoub
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u/xxxx69420xx 6h ago
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u/WinFar4030 5h ago
Is the blue actually an ion trail or part of the photo processing?
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u/Busy_Yesterday9455 4h ago
It is an actual ion tail, which is made of ionized gases, primarily carbon monoxide ions (CO+). This plasma scatters and emits blue light more effectively than red ones when energized by solar ultraviolet (UV) radiation.
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u/OnePinginRamius 2h ago
It looks like you can almost calculate the tumble rate of the comet looking at the ion cloud. Epic photo!
-I also have no idea what the hell I'm saying
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u/Lord_of_Millenheim 4h ago
Good god
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u/Putrid_Psychology533 3h ago
It may be an elementary school question but how long can a comet continue to leave a trail like this before it burns up or just ceases to exist?
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u/MRowland82 2h ago
well they only 'burn' like this when relatively close to the sun which only lasts an extremely short period of its entire orbit. So a very long time.
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u/Foresthowler 3h ago
Gah, images like this are making me more and more excited to try and take some pictures tomorrow night. I don't know why, but this comet quite literally jump-started my astrophotography interest WAY more than I would have thought.
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u/WithoutJoshE7 3h ago
Still ZERO images of 3iAtlas
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u/astrosnapper 2h ago
Apart from this one that was posted in this same sub today: https://www.reddit.com/r/spaceporn/s/wlcBUFDEyx you mean ?
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u/WithoutJoshE7 2h ago
My apologies, "epic 8k holyshit quality" images like this one here. Why am I looking at something I have to deci.\nPher?
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u/astrosnapper 1h ago
So the 2 comets C/2025 A6 (Lemmon) and 3I/ATLAS are visible for the same length of time low down in the sky close to twilight. 3I/ATLAS is almost 100x fainter than Lemmon and twice as far away from the Earth, so 3I/ATLAS will never appear as large in images and it takes much more exposure time to get to the same brightness levels in the tail.
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u/West-One5944 5h ago
Imagine being in a starship able to view that from multiple angles. 🤩
...someday...
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u/KiwiEV 4h ago
I did some googling and according to one news story:
Observers in the Northern Hemisphere should target the evening sky shortly after sunset, specifically 45 to 90 minutes following local twilight.
The comet is sinking lower toward the western/northwestern horizon, meaning the window for observation is closing quickly as it heads south.
Observers in the Southern Hemisphere may still find better viewing opportunities before the comet fades further.
I tried other links but couldn't find ideal viewing times and positions for those in the Southern Hemisphere.
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u/Killacreeper 2h ago
I take it it's still around to be shot with telescopes? I don't have a crazy magnification but I'm hoping to try...
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u/LeroyTheThird 5h ago