Comet C/2025 A6 Lemmon in the evening sky, as seen in the mountains of southern New Mexico.

First photo was taken in twilight, so the sky is blue. This comet is not very bright, so the faint extensions of the tail are easily washed out by twilight (or light pollution).

Second photo is a slightly wider view, taken in full night. The tail extends at least seven degrees. The sky background is mottled and banded. That's because bands of (mostly green) airglow were drifting across the sky.

The third photo shows the appearance of the second photo before I took steps to try and smooth the sky background. With contrast set high, not only was the sky covered with bands of lighter and darker sections of sky...but they were different colors as well.

The fourth photo shows where I placed sample areas across the frame so that image processing software could analyze, model, and correct the irregularities in the sky. Considering what I started with, my final result is pretty good.

#Comet #NewMexico #Photography #Astrophotography #Astronomy #Starlink #Satellites #Pollution #Night #iPhonePhotography #SpaceWeather #Space #Aurora #Airglow

The comet, as seen by a 'normal' camera lens on Sunday evening. (It's not a telephoto lens and it's not a wide-angle lens.)

First photo was taken in fairly bright twilight. The comet (C/2025 A6 Lemmon) is the only 'alien green' smudge near the middle of the frame.

Second photo was taken 17 minutes later near the end of twilight. (Full night would start about 5 - 10 minutes later.) A bit of tail is now visible, many more stars, and lots of @#$! satellite trails.

Third graphic is a finder chart from planetarium software. The red wire rectangle shows the sky coverage of the photos. I have also extended this finder chart more to the right to show the Big Dipper. This finder chart is for 19 October, but the comet will move only a little bit to the left every day. By the 23rd the comet will have reached the edge of the photo frame...and moved a wee bit higher.

#Comet #Astronomy #Photography #Astrophotography #iPhonePhotography

The comet, as seen by a 'normal' camera lens on Sunday evening. (It's not a telephoto lens and it's not a wide-angle lens.)

First photo was taken in fairly bright twilight. The comet (C/2025 A6 Lemmon) is the only 'alien green' smudge near the middle of the frame.

Second photo was taken 17 minutes later near the end of twilight. (Full night would start about 5 - 10 minutes later.) A bit of tail is now visible, many more stars, and lots of @#$! satellite trails.

Third graphic is a finder chart from planetarium software. The red wire rectangle shows the sky coverage of the photos. I have also extended this finder chart more to the right to show the Big Dipper. This finder chart is for 19 October, but the comet will move only a little bit to the left every day. By the 23rd the comet will have reached the edge of the photo frame...and moved a wee bit higher.

#Comet #Astronomy #Photography #Astrophotography #iPhonePhotography

I have read a lot about the impact of Starlink on the night sky, and have seen the "trains" of newly launched satellites. But today I saw this map, which plots them all, in real time. Or you can speed it up a bit.

I understand there are plans to put up at least two more constellations this dense. I have no words.

@sundogplanets Have you seen this site- it makes the point rather starkly.

#astronomy #starlink

https://www.heavens-above.com/StarLink.aspx?lat=0&lng=0&loc=Unspecified&alt=0&tz=UCT

Comet C/2025 A6 Lemmon in the evening sky, as seen in the mountains of southern New Mexico.

First photo was taken in twilight, so the sky is blue. This comet is not very bright, so the faint extensions of the tail are easily washed out by twilight (or light pollution).

Second photo is a slightly wider view, taken in full night. The tail extends at least seven degrees. The sky background is mottled and banded. That's because bands of (mostly green) airglow were drifting across the sky.

The third photo shows the appearance of the second photo before I took steps to try and smooth the sky background. With contrast set high, not only was the sky covered with bands of lighter and darker sections of sky...but they were different colors as well.

The fourth photo shows where I placed sample areas across the frame so that image processing software could analyze, model, and correct the irregularities in the sky. Considering what I started with, my final result is pretty good.

#Comet #NewMexico #Photography #Astrophotography #Astronomy #Starlink #Satellites #Pollution #Night #iPhonePhotography #SpaceWeather #Space #Aurora #Airglow

Trek or Treat! Join me TODAY (Sat) on #Twitch from 4 – 10 p.m. EDT for S.P.O.C.K vs. Covenant, with Star Trek themes + Swear Trek redeems. Hop in! --> https://twitch.tv/maerchen1313

#synthpop #futurepop #DJ #oc #VTuber #ENVtuber #VR #radio #indiegame #scifi #Trekker #music #NASA #scifi #strangenewworlds #Trek #Twitch #space #astronomy #Starfleet #Covenant #StarTrek #SwearTrek #TrickorTreat #cosplay #sciencefiction #starwars #startrekcosplay #60s #70s #80s #90s #WilliamShatner #SPOCK #Halloween2025

Trek or Treat! Join me TODAY (Sat) on #Twitch from 4 – 10 p.m. EDT for S.P.O.C.K vs. Covenant, with Star Trek themes + Swear Trek redeems. Hop in! --> https://twitch.tv/maerchen1313

#synthpop #futurepop #DJ #oc #VTuber #ENVtuber #VR #radio #indiegame #scifi #Trekker #music #NASA #scifi #strangenewworlds #Trek #Twitch #space #astronomy #Starfleet #Covenant #StarTrek #SwearTrek #TrickorTreat #cosplay #sciencefiction #starwars #startrekcosplay #60s #70s #80s #90s #WilliamShatner #SPOCK #Halloween2025

@CampodeJuncos

This is very well said. I'm spreading the word. I want to know Freedom before I die. I'm not participating in collective suicide. You should commit suicide individually if you don't heed this.

#Supertramp @Supertramp

#space #Astrophysics #science #mathematics #optimism #Cosmology #books #music #humour #Technology #pluto #nasa #astronomy #computer #ScienceCommunications #EverythingScience #standupforscience #UniversityOfMontana #BiomedicalScience #Laboratory #Experiment

@CampodeJuncos

This is very well said. I'm spreading the word. I want to know Freedom before I die. I'm not participating in collective suicide. You should commit suicide individually if you don't heed this.

#Supertramp @Supertramp

#space #Astrophysics #science #mathematics #optimism #Cosmology #books #music #humour #Technology #pluto #nasa #astronomy #computer #ScienceCommunications #EverythingScience #standupforscience #UniversityOfMontana #BiomedicalScience #Laboratory #Experiment

Comet Lemmon (C/2025 A6) in the morning sky, just before twilight starts.

The camera was on a fixed tripod, no tracking, short telephoto lenses. 30 images were taken, then stacked with software.

This comet is faint to the naked eye, pretty in binoculars, and it's only seen in the northern hemisphere.

Note that in the first photo, if you zoom in close, some of the stars are elliptical smudges. Those are galaxies, tens of millions of light years away.

If you don't want to get up at 5:30 am, wait a day or two and it'll be visible low in the northwest in the evening sky, getting higher and moving south day by day.

If you can get away from bright city lights, this comet is bright enough that even a cell phone (especially propped on a stationary object) can get decent photos.

Please boost and share widely, especially the finder charts.

#Comet#NewMexico#Photography#Astrophotography#Astronomy#Galaxy

Comet Lemmon (C/2025 A6) in the morning sky, just before twilight starts.

The camera was on a fixed tripod, no tracking, short telephoto lenses. 30 images were taken, then stacked with software.

This comet is faint to the naked eye, pretty in binoculars, and it's only seen in the northern hemisphere.

Note that in the first photo, if you zoom in close, some of the stars are elliptical smudges. Those are galaxies, tens of millions of light years away.

If you don't want to get up at 5:30 am, wait a day or two and it'll be visible low in the northwest in the evening sky, getting higher and moving south day by day.

If you can get away from bright city lights, this comet is bright enough that even a cell phone (especially propped on a stationary object) can get decent photos.

Please boost and share widely, especially the finder charts.

#Comet#NewMexico#Photography#Astrophotography#Astronomy#Galaxy

Comet C/2025 R2 SWAN is fairly bright, but most of its tail is hidden by the bright, textured background of our Milky Way. The stars are slightly trailed because the stack of images was aligned on the comet.

This image was taken with a 135mm lens. If it's clear tomorrow, I'll use a 200mm.

#NewMexico#Comet#Astronomy#Photography#Astrophotography

Comet C/2025 R2 SWAN is fairly bright, but most of its tail is hidden by the bright, textured background of our Milky Way. The stars are slightly trailed because the stack of images was aligned on the comet.

This image was taken with a 135mm lens. If it's clear tomorrow, I'll use a 200mm.

#NewMexico#Comet#Astronomy#Photography#Astrophotography

"I would say keep your options open…or move to Canada or France or England. Right now, it looks like America is getting out of this business." #NASA#SpaceExploration#PlanetaryScience#Science#Astronomy#USPol #Astrodon @spacehttps://www.planetary.org/articles/4000-gone-inside-nasas-brain-drain

"I would say keep your options open…or move to Canada or France or England. Right now, it looks like America is getting out of this business." #NASA#SpaceExploration#PlanetaryScience#Science#Astronomy#USPol #Astrodon @spacehttps://www.planetary.org/articles/4000-gone-inside-nasas-brain-drain

There were two new probable gravitational-wave events in the past two days. If they are real, both came from mergers of binary black holes.

1️⃣ S251013x on 13 October at a distance of around 12 billion light-years. If the masses of the two black holes were equal, they were between around 25 and 100 solar masses. More info: https://gracedb.ligo.org/superevents/S251013x/view/

2️⃣ S251014cn on 14 October at a distance of around 2 billion light-years. If the masses of the two black holes were equal, they were between around 6 and 25 solar masses. More info: https://gracedb.ligo.org/superevents/S251014cn/view/

#GravitationalWaves#BlackHoles#S251013x#S251014cn#Astronomy#Astrophysics

There were two new probable gravitational-wave events in the past two days. If they are real, both came from mergers of binary black holes.

1️⃣ S251013x on 13 October at a distance of around 12 billion light-years. If the masses of the two black holes were equal, they were between around 25 and 100 solar masses. More info: https://gracedb.ligo.org/superevents/S251013x/view/

2️⃣ S251014cn on 14 October at a distance of around 2 billion light-years. If the masses of the two black holes were equal, they were between around 6 and 25 solar masses. More info: https://gracedb.ligo.org/superevents/S251014cn/view/

#GravitationalWaves#BlackHoles#S251013x#S251014cn#Astronomy#Astrophysics

✨ My rock band's latest album is out today: New Horizons ✨

Basically a mixture of rock and science-fiction. I hope you'll like it

https://open.spotify.com/intl-fr/album/5nTX6Gy6ivhCStwSL2xTu9?si=LiSsMIy0SFK9U28QRS4Jfg

#redshift #theredshiftempire #rock #frenchrock #hardrock #astronomy #inouie #vinyl

#astronomy#Voyager #voyager1 #voyager2

G’MORN FEDINAUTS!

just sitting here in awe how the maths & sciences of people in bell bottoms and polyester suits keeps chugging along across the universe:
https://mstdn.social/@stux/115372776781528538

the Voyager is proof that if #techbros ever wanted to explore space, they would have launched a million Voyagers with their billions… but they won’t.

their biggest con is not that they do science and maths for the good of Humanity. their biggest con is that they do science and maths at all.

#NASA #astronomy