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
I tested the new SVBony 3nm dual narrowband filter for #astrophotography on 3 targets. My review is here:
youtu.be/InrCXL0Kp08
youtu.be/InrCXL0Kp08
The SVBONY SV220 3nm Dual Narrowband Filter. A Review.
YouTube video by Deep Sky Detail
youtu.be
November 28, 2025 at 6:45 PM
I tested the new SVBony 3nm dual narrowband filter for #astrophotography on 3 targets. My review is here:
youtu.be/InrCXL0Kp08
youtu.be/InrCXL0Kp08
Reposted by Deep Sky Detail (Mark)
Astrometry:
RA: 60.81 °
Dec: 36.36 °
Resolution: 4.19 arcsec/pix
Objects: California Nebula, NGC 1499
RA: 60.81 °
Dec: 36.36 °
Resolution: 4.19 arcsec/pix
Objects: California Nebula, NGC 1499
November 27, 2025 at 3:45 AM
Astrometry:
RA: 60.81 °
Dec: 36.36 °
Resolution: 4.19 arcsec/pix
Objects: California Nebula, NGC 1499
RA: 60.81 °
Dec: 36.36 °
Resolution: 4.19 arcsec/pix
Objects: California Nebula, NGC 1499
The California Nebula. It's around 5.5 hours taken with my ZWO 294MM camera and the new SVBONY dual narrowband 3nm filter. Color was added using my single emission line Ha and OIII filters (also around 5 hours each filter). #astrophotography @kat-astro-bot.bsky.social
November 27, 2025 at 3:44 AM
The California Nebula. It's around 5.5 hours taken with my ZWO 294MM camera and the new SVBONY dual narrowband 3nm filter. Color was added using my single emission line Ha and OIII filters (also around 5 hours each filter). #astrophotography @kat-astro-bot.bsky.social
NGC 281 (aka the Pacman Nebula) in SHO. It's about 20 hours total integration time taken with an f/6 scope and 294MM camera. I'm not quite sure it is finished, and feel like it needs another 40 hours, lol. But that's #astrophotography I guess. Maybe I'll try reprocessing. @kat-astro-bot.bsky.social
November 24, 2025 at 9:28 PM
NGC 281 (aka the Pacman Nebula) in SHO. It's about 20 hours total integration time taken with an f/6 scope and 294MM camera. I'm not quite sure it is finished, and feel like it needs another 40 hours, lol. But that's #astrophotography I guess. Maybe I'll try reprocessing. @kat-astro-bot.bsky.social
This is an SHO image of the Orion Nebula in disguise. I used pixelmath in @siril.org to make it mimic an RGB image. Total exposure time is around 12 hours, taken with an f/6 80mm refractor and ZWO 294MM camera. #astrophotography @kat-astro-bot.bsky.social
November 24, 2025 at 3:03 AM
This is an SHO image of the Orion Nebula in disguise. I used pixelmath in @siril.org to make it mimic an RGB image. Total exposure time is around 12 hours, taken with an f/6 80mm refractor and ZWO 294MM camera. #astrophotography @kat-astro-bot.bsky.social
Holy cow this image is amazing.
AstroBin's Image of the Day: "The Perseus Cluster: From Euclid and CFHT to Oukaimeden’s Sky" by Yann Sainty and kaeouach aziz
www.astrobin.com/z8clpx/
#astrophotography
www.astrobin.com/z8clpx/
#astrophotography
November 24, 2025 at 2:43 AM
Holy cow this image is amazing.
Reposted by Deep Sky Detail (Mark)
Short informational video on Comet 3I/ATLAS: www.youtube.com/watch?v=ad4d...
It's currently visible in our early morning skies. I just need one good weekend night to go somewhere to image it! Anyone else trying for it?
#astronomy #comet #space
It's currently visible in our early morning skies. I just need one good weekend night to go somewhere to image it! Anyone else trying for it?
#astronomy #comet #space
3I/ATLAS Explained: How We Know It’s an Interstellar Comet and How to Observe & Photograph It
YouTube video by Naztronomy
www.youtube.com
November 22, 2025 at 8:05 PM
Short informational video on Comet 3I/ATLAS: www.youtube.com/watch?v=ad4d...
It's currently visible in our early morning skies. I just need one good weekend night to go somewhere to image it! Anyone else trying for it?
#astronomy #comet #space
It's currently visible in our early morning skies. I just need one good weekend night to go somewhere to image it! Anyone else trying for it?
#astronomy #comet #space
Sometimes when you pair fast telescopes in #astrophotography to filters that aren't made for them, you will lose signal. Cuiv (aka "the lazy geek") created a spreasheet a while back. I made an app to make things a bit more user friendly. Check out how to use it here: youtu.be/lcK6m1MA6V4
Why your filters don't work. Use the Bandpass Shift Calculator to help!
YouTube video by Deep Sky Detail
youtu.be
November 22, 2025 at 3:40 PM
Sometimes when you pair fast telescopes in #astrophotography to filters that aren't made for them, you will lose signal. Cuiv (aka "the lazy geek") created a spreasheet a while back. I made an app to make things a bit more user friendly. Check out how to use it here: youtu.be/lcK6m1MA6V4
How did we miss the OIII arc next to Andromeda for so long? I try to answer this in my newest #astrophotography video, presenting three possible answers.
youtu.be/DKMS_uD1dQU
youtu.be/DKMS_uD1dQU
Because of Noise Reduction? Are we processing out the good stuff?
YouTube video by Deep Sky Detail
youtu.be
November 15, 2025 at 2:31 AM
How did we miss the OIII arc next to Andromeda for so long? I try to answer this in my newest #astrophotography video, presenting three possible answers.
youtu.be/DKMS_uD1dQU
youtu.be/DKMS_uD1dQU
This video is coming out tomorrow :)
Why can't we see gorillas? Or rather, giant nebulae?
I'm starting to analyze some narrowband data from different filters (5nm SVBONY SHO filters, 3nm Dual Narrowband SVBONY and Optolong 12nm SHO filters). But... before I do that...
I'm starting to analyze some narrowband data from different filters (5nm SVBONY SHO filters, 3nm Dual Narrowband SVBONY and Optolong 12nm SHO filters). But... before I do that...
November 14, 2025 at 4:18 AM
This video is coming out tomorrow :)
Why can't we see gorillas? Or rather, giant nebulae?
I'm starting to analyze some narrowband data from different filters (5nm SVBONY SHO filters, 3nm Dual Narrowband SVBONY and Optolong 12nm SHO filters). But... before I do that...
I'm starting to analyze some narrowband data from different filters (5nm SVBONY SHO filters, 3nm Dual Narrowband SVBONY and Optolong 12nm SHO filters). But... before I do that...
November 14, 2025 at 4:17 AM
Why can't we see gorillas? Or rather, giant nebulae?
I'm starting to analyze some narrowband data from different filters (5nm SVBONY SHO filters, 3nm Dual Narrowband SVBONY and Optolong 12nm SHO filters). But... before I do that...
I'm starting to analyze some narrowband data from different filters (5nm SVBONY SHO filters, 3nm Dual Narrowband SVBONY and Optolong 12nm SHO filters). But... before I do that...
What a cool project from @astroaf.space !! A DIY harmonic drive mount for #astrophotography
www.youtube.com/watch?v=-n8U...
www.youtube.com/watch?v=-n8U...
Design and Build a DIY Harmonic Drive Telescope Mount!
YouTube video by AstroAF
www.youtube.com
November 12, 2025 at 2:05 AM
What a cool project from @astroaf.space !! A DIY harmonic drive mount for #astrophotography
www.youtube.com/watch?v=-n8U...
www.youtube.com/watch?v=-n8U...
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