Deep Sky Detail (Mark)
@deepskydetail.bsky.social
Plays an amateur astronomer on YouTube.
Has fun with astronomy in real life.
Trained in cognitive science.
Also likes other things!
https://www.youtube.com/@deepskydetail
Has fun with astronomy in real life.
Trained in cognitive science.
Also likes other things!
https://www.youtube.com/@deepskydetail
Reposted by Deep Sky Detail (Mark)
The Crescent Nebula taken over 5 minutes in June and July. This time, I caught a hint of the Soap Bubble! The starless version shows it more clearly. Higher res version on astrobin: app.astrobin.com/i/ni99aj
#astronomy #astrophotography #space #Nebula
#astronomy #astrophotography #space #Nebula
November 7, 2025 at 8:26 PM
The Crescent Nebula taken over 5 minutes in June and July. This time, I caught a hint of the Soap Bubble! The starless version shows it more clearly. Higher res version on astrobin: app.astrobin.com/i/ni99aj
#astronomy #astrophotography #space #Nebula
#astronomy #astrophotography #space #Nebula
November 7, 2025 at 2:36 AM
I just posted a video with 130 #astrophotography terms that will probably be really helpful for anyone starting out. I analyzed 2 million words from online forums, found the most common terms, and explain them. I may have missed a few, but there is a lot here.
youtu.be/Gt5PZwyxIys
youtu.be/Gt5PZwyxIys
November 4, 2025 at 12:57 AM
I just posted a video with 130 #astrophotography terms that will probably be really helpful for anyone starting out. I analyzed 2 million words from online forums, found the most common terms, and explain them. I may have missed a few, but there is a lot here.
youtu.be/Gt5PZwyxIys
youtu.be/Gt5PZwyxIys
Know someone new to astrophotography? For the past few months, I've tried creating a list of the most used astro terms that beginners need. I analyzed over 2 MILLION words from beginner forums, figured out the most common 130+ terms and made a video. It will be released in less than 24 hours.
November 3, 2025 at 5:52 AM
Know someone new to astrophotography? For the past few months, I've tried creating a list of the most used astro terms that beginners need. I analyzed over 2 MILLION words from beginner forums, figured out the most common 130+ terms and made a video. It will be released in less than 24 hours.
November 1, 2025 at 12:48 AM
I've been testing out some new 5nm SHO filters (fully funded by me and my YT and BMC supporters; not sent to me) on several targets. This is a test of the heart nebula (IC 1805). It's about 1.5 hours for each filter (so, about 4.5 hours total).
#astrophotography. @kat-astro-bot.bsky.social
#astrophotography. @kat-astro-bot.bsky.social
October 26, 2025 at 5:13 PM
I've been testing out some new 5nm SHO filters (fully funded by me and my YT and BMC supporters; not sent to me) on several targets. This is a test of the heart nebula (IC 1805). It's about 1.5 hours for each filter (so, about 4.5 hours total).
#astrophotography. @kat-astro-bot.bsky.social
#astrophotography. @kat-astro-bot.bsky.social
There are a ton of galaxies in this image. In the middle are NGC 6045 and 6047. If you zoom in and look, there are edge on galaxies, interacting galaxies, merging galaxies. It's a galaxy extravaganza!
#astrophotography
#astrophotography
October 20, 2025 at 2:22 AM
There are a ton of galaxies in this image. In the middle are NGC 6045 and 6047. If you zoom in and look, there are edge on galaxies, interacting galaxies, merging galaxies. It's a galaxy extravaganza!
#astrophotography
#astrophotography
Reposted by Deep Sky Detail (Mark)
Precise measurements of stars’ motions show that a wave is propagating outward from our galaxy’s center — perhaps from a long-ago collision with another galaxy.
skyandtelescope.org/astronomy-ne...
.
.
#astronomy #galaxy #milkyway #cosmology
skyandtelescope.org/astronomy-ne...
.
.
#astronomy #galaxy #milkyway #cosmology
A “Great Wave” Is Crashing through the Milky Way
Precise measurements of stars’ motions show that a wave is propagating outward from our galaxy’s center — perhaps from a long-ago collision with another galaxy.
skyandtelescope.org
October 17, 2025 at 1:46 PM
Precise measurements of stars’ motions show that a wave is propagating outward from our galaxy’s center — perhaps from a long-ago collision with another galaxy.
skyandtelescope.org/astronomy-ne...
.
.
#astronomy #galaxy #milkyway #cosmology
skyandtelescope.org/astronomy-ne...
.
.
#astronomy #galaxy #milkyway #cosmology
NGC 6384 is such a beautiful galaxy, and a great example of an intermediate barred spiral. I got around 14 hours of integration time at f/10 with my Celestron C8. It's still too noisy at the edges, and definitely needs more time.
#Astrophotography
#Astrophotography
October 17, 2025 at 2:43 AM
NGC 6384 is such a beautiful galaxy, and a great example of an intermediate barred spiral. I got around 14 hours of integration time at f/10 with my Celestron C8. It's still too noisy at the edges, and definitely needs more time.
#Astrophotography
#Astrophotography
I made a video on how you can get started in #Astrophotography with just a smartphone and tripod. Below is the link :)
youtu.be/1g7CTZIbs6U
youtu.be/1g7CTZIbs6U
CAPTURE the MILKY WAY with YOUR SMARTPHONE. Ep. 1 (Astro Guide)
YouTube video by Deep Sky Detail
youtu.be
October 13, 2025 at 4:54 PM
I made a video on how you can get started in #Astrophotography with just a smartphone and tripod. Below is the link :)
youtu.be/1g7CTZIbs6U
youtu.be/1g7CTZIbs6U
Reposted by Deep Sky Detail (Mark)
Reposted by Deep Sky Detail (Mark)
Coming soon, a script to reveal all details of your images.
October 1, 2025 at 10:52 AM
Coming soon, a script to reveal all details of your images.
I've been experimenting with my S24 to capture the milky way. I'm skeptical of Samsung's ability to take a picture of it using its camera app. I'm just not sure how much of it is AI enhancement. So, I used a separate app with all the AI features turned off to take raw images. I stacked them in Siril
September 20, 2025 at 9:58 PM
I've been experimenting with my S24 to capture the milky way. I'm skeptical of Samsung's ability to take a picture of it using its camera app. I'm just not sure how much of it is AI enhancement. So, I used a separate app with all the AI features turned off to take raw images. I stacked them in Siril
A 1 hour time lapse of the Milky Way taken with my S24 phone (raw images using the ProShot App) in Bortle 5 skies. A motion sensing flood light kept turning on, unfortunately. I think bugs were flying in front of the sensor. Processed in @siril.org with flats and darks #astrophotography #milkyway
September 20, 2025 at 3:18 AM
A 1 hour time lapse of the Milky Way taken with my S24 phone (raw images using the ProShot App) in Bortle 5 skies. A motion sensing flood light kept turning on, unfortunately. I think bugs were flying in front of the sensor. Processed in @siril.org with flats and darks #astrophotography #milkyway
Every now and then, I see discussions about colors in astro photos. Are they real? A video I made on this a couple years ago has a surprising answer: all color everywhere is fake! It's the second video in a series. There's cognitive science to back it up! :)
youtu.be/VIhngr6nxk4?...
youtu.be/VIhngr6nxk4?...
Why No One Agrees on Color in Astrophotography. Is Astrophotography Real Part 2: Context and Color
YouTube video by Deep Sky Detail
youtu.be
September 10, 2025 at 1:07 AM
Every now and then, I see discussions about colors in astro photos. Are they real? A video I made on this a couple years ago has a surprising answer: all color everywhere is fake! It's the second video in a series. There's cognitive science to back it up! :)
youtu.be/VIhngr6nxk4?...
youtu.be/VIhngr6nxk4?...
Reposted by Deep Sky Detail (Mark)
I dunno, I just want right and wrong to matter again.
September 9, 2025 at 1:11 PM
I dunno, I just want right and wrong to matter again.
Reposted by Deep Sky Detail (Mark)
Dark Shark Nebula taken with the Askar 91F. Only 82 mins of integration time from a Bortle 3 location.
Video about the telescope: www.youtube.com/watch?v=0YRd...
#astronomy #astrophotography #space #nebula
Video about the telescope: www.youtube.com/watch?v=0YRd...
#astronomy #astrophotography #space #nebula
September 8, 2025 at 8:25 PM
Dark Shark Nebula taken with the Askar 91F. Only 82 mins of integration time from a Bortle 3 location.
Video about the telescope: www.youtube.com/watch?v=0YRd...
#astronomy #astrophotography #space #nebula
Video about the telescope: www.youtube.com/watch?v=0YRd...
#astronomy #astrophotography #space #nebula
This was a fun video I made a few months back. I ran some simulations, and I showed how SNR decreases for each pixel (i.e., the signal and noise of each pixel decreases; the net effect is lower SNR).
#astrophotography
youtu.be/lnyrLQEgoc4
#astrophotography
youtu.be/lnyrLQEgoc4
The Truth About Pixel Size and Shot Noise (It’s Not What You Think)
YouTube video by Deep Sky Detail
youtu.be
September 4, 2025 at 12:58 AM
This was a fun video I made a few months back. I ran some simulations, and I showed how SNR decreases for each pixel (i.e., the signal and noise of each pixel decreases; the net effect is lower SNR).
#astrophotography
youtu.be/lnyrLQEgoc4
#astrophotography
youtu.be/lnyrLQEgoc4
I'm Glad We're Here.
#Astrophotography
#Astrophotography
September 2, 2025 at 3:11 AM
I'm Glad We're Here.
#Astrophotography
#Astrophotography
Reposted by Deep Sky Detail (Mark)
Do you want to use Siril to stack astro images, but are afraid of scripts? How about Sirilic? The latest version *mostly* works with the Beta versions of Siril. At least, it still does what I want it to do :)
@siril.org
www.youtube.com/watch?v=kEbZ...
@siril.org
www.youtube.com/watch?v=kEbZ...
Adding Detail by Stacking Multiple Images (Sirilic Tutoriall)
YouTube video by Deep Sky Detail
www.youtube.com
September 1, 2025 at 12:59 AM
Do you want to use Siril to stack astro images, but are afraid of scripts? How about Sirilic? The latest version *mostly* works with the Beta versions of Siril. At least, it still does what I want it to do :)
@siril.org
www.youtube.com/watch?v=kEbZ...
@siril.org
www.youtube.com/watch?v=kEbZ...
Reposted by Deep Sky Detail (Mark)
Oh... and apparently, I made another video on how to process Andromeda in @siril.org and @gimpofficial.bsky.social
(It's been pretty cloudy for the past couple weeks, so I had the time)
youtu.be/0Ft8_TO-Gw4
(It's been pretty cloudy for the past couple weeks, so I had the time)
youtu.be/0Ft8_TO-Gw4
Simple Andromeda Processing: Tutorial with Free Software (Siril + Gimp )
YouTube video by Deep Sky Detail
youtu.be
September 1, 2025 at 12:59 AM
Oh... and apparently, I made another video on how to process Andromeda in @siril.org and @gimpofficial.bsky.social
(It's been pretty cloudy for the past couple weeks, so I had the time)
youtu.be/0Ft8_TO-Gw4
(It's been pretty cloudy for the past couple weeks, so I had the time)
youtu.be/0Ft8_TO-Gw4
Do you want to use Siril to stack astro images, but are afraid of scripts? How about Sirilic? The latest version *mostly* works with the Beta versions of Siril. At least, it still does what I want it to do :)
@siril.org
www.youtube.com/watch?v=kEbZ...
@siril.org
www.youtube.com/watch?v=kEbZ...
Adding Detail by Stacking Multiple Images (Sirilic Tutoriall)
YouTube video by Deep Sky Detail
www.youtube.com
September 1, 2025 at 12:59 AM
Do you want to use Siril to stack astro images, but are afraid of scripts? How about Sirilic? The latest version *mostly* works with the Beta versions of Siril. At least, it still does what I want it to do :)
@siril.org
www.youtube.com/watch?v=kEbZ...
@siril.org
www.youtube.com/watch?v=kEbZ...
Reposted by Deep Sky Detail (Mark)
M27 — The Dumbbell Nebula
First planetary nebula, discovered by Charles Messier 1764. 1,360 LY
49 h 35 min LRGBSHO
@celestronuniverse.bsky.social EdgeHD 8
Player One Artemis-M Pro
Optolong
Svbony
Astroasis
@skywatcherusa.bsky.social HEQ5 Pro
#astrophotography #DSO @kat-astro-bot.bsky.social
First planetary nebula, discovered by Charles Messier 1764. 1,360 LY
49 h 35 min LRGBSHO
@celestronuniverse.bsky.social EdgeHD 8
Player One Artemis-M Pro
Optolong
Svbony
Astroasis
@skywatcherusa.bsky.social HEQ5 Pro
#astrophotography #DSO @kat-astro-bot.bsky.social
August 17, 2025 at 6:38 PM
M27 — The Dumbbell Nebula
First planetary nebula, discovered by Charles Messier 1764. 1,360 LY
49 h 35 min LRGBSHO
@celestronuniverse.bsky.social EdgeHD 8
Player One Artemis-M Pro
Optolong
Svbony
Astroasis
@skywatcherusa.bsky.social HEQ5 Pro
#astrophotography #DSO @kat-astro-bot.bsky.social
First planetary nebula, discovered by Charles Messier 1764. 1,360 LY
49 h 35 min LRGBSHO
@celestronuniverse.bsky.social EdgeHD 8
Player One Artemis-M Pro
Optolong
Svbony
Astroasis
@skywatcherusa.bsky.social HEQ5 Pro
#astrophotography #DSO @kat-astro-bot.bsky.social