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kat-astro-bot.bsky.social
Astrometry Bot
@kat-astro-bot.bsky.social
480 followers 320 following 870 posts
I'm a friendly Astrometry bot!
Mention me @kat-astro-bot.bsky.social‬ on your post and I will answer with astrometry data of your image.
Based on : nova.astrometry.net
source code : https://github.com/KatAstro-F/bluesky_astrometry_bot
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kat-astro-bot.bsky.social
Astrometry Bot @kat-astro-bot.bsky.social · Dec 8

When you mention me (@kat-astro-bot.bsky.social‬) in a post, I'll respond with:
* Calibration data for your image: RA/Dec and resolution
* list of objects detected
* Annotated version of your image
Responses usually take less than 10 min
Author :
@quantumkat.bsky.social
Reposted by Astrometry Bot
monel76.bsky.social
IC1805 Heart Nebula in Cassiopeia, 50 minutes, William Optics Megrez 72fd with 0,8x, ASI533MC pro, SVBony SV220 H-Alpha/Oiii filter, Celestron CG-4 #astronomy #astrophotography 🔭 @siril.org @kat-astro-bot.bsky.social @gimpofficial.bsky.social
Processed with Siril 1.4.3 and GIMP.
IC 1805 Heart Nebula
November 10, 2025 at 9:15 PM
Reposted by Astrometry Bot
monel76.bsky.social
LBN 437 Gecko Nebula part of SH2-126 in Lacerta, 85 minutes, William Optics Megrez 72fd with 0,8x, ASI533MC pro, Celestron CG-4 #astronomy #astrophotography 🔭 @siril.org @kat-astro-bot.bsky.social @gimpofficial.bsky.social
Processed with Siril 1.4.3 and GIMP.
LBN 437 Gecko Nebula
November 10, 2025 at 9:12 PM
Reposted by Astrometry Bot
adrianusv.bsky.social
A crescent on the sky
@kat-astro-bot.bsky.social
November 10, 2025 at 8:57 AM
Reposted by Astrometry Bot
clayennisastro.bsky.social
M101, also known as the Pinwheel Galaxy, is about 21 million light years away in Ursa Major. Its spiral arms stretch gracefully through space, making it one of the most beautiful galaxies you can capture. #astrophotography #astronomy #universe @kat-astro-bot.bsky.social
November 9, 2025 at 11:13 PM
Reposted by Astrometry Bot
ltno2.bsky.social
What's cool about #astrophotography 🔭📷 is that you can stack frames to create nice images, and also use those frames to do some aperture photometry (here with AIJ on the eclipsing binary V1337 CAS near IC1805 Heart Nebula AIJ). Ain't that cool people 🤓?
What do you see @kat-astro-bot.bsky.social ?
IC1805 the Heart Nebula shot in HOO using a 76 mm refractor and a astronomy cooled monochrome camera (a PlayerOne Poseidon-M). 120s subs. 83xH-alpha. 54xOIII Astro Image J screen showing the selection of the eclipsing binary V1337 CAS and reference stars to start an aperture photometry analysis. Output plot of the photometry measurements of the eclipsing binary V1337 CAS over 4.5 hours, showing a peak in flux.
November 9, 2025 at 10:28 AM
Reposted by Astrometry Bot
clayennisastro.bsky.social
Vega is the bright blue white star high in the night sky. It’s only 25 light years away and shines about 40 times brighter than our Sun. It was the first star ever photographed and still steals the show in the constellation Lyra. #astronomy #astrophotography #star @kat-astro-bot.bsky.social
November 8, 2025 at 2:40 AM
Reposted by Astrometry Bot
notrimskiy.bsky.social
Did an overnight imaging plan on Andromeda galaxy about a month ago and then forgot about processing it. 150mm f/5 newt, ASI533MC, IR/UV cutoff filter, 6 hours of exposure. #astrophotography

(@kat-astro-bot.bsky.social, what do you see?)
Andromeda galaxy with prominently visible dust lanes and its M32 friend.
November 7, 2025 at 11:22 PM
Reposted by Astrometry Bot
quantumkat.bsky.social
👨‍👩‍👦‍👦7 sisters family portrait
My last attempt on the Pleiades.
Easy to capture, not that easy to keep clean , in particular, collimation to get crisp star spikes.
📷Newton 130/900 · Sony A7S · 6h exposure
#astrophotography
@kat-astro-bot.bsky.social what do you see ?
Deep-sky image of the Pleiades (M45; NGC 1432/1435) in Taurus, ~440 light-years away and ~100 Myr old. The frame shows hundreds of hot B-type members, not just seven: the brightest include Alcyone, Atlas with close companion Pleione, Merope, Maia, Electra, Taygeta, Celaeno, and the Asterope pair. Wispy blue reflection nebulosity veils the cluster—strongest around Merope (NGC 1435) and Maia (NGC 1432)—with faint dusty filaments and soft halos across a wide field. Stellar cores are tight with symmetric Newtonian diffraction spikes; overall color is blue-white stars against a dense, warmer background starfield. Captured with a Newton 130/900 and Sony A7S over 6 hours of exposure.
November 6, 2025 at 9:11 PM
Reposted by Astrometry Bot
afischer.bsky.social
The planetary nebula Sh2-188 in the constellation Cassiopeia is also known as Shrimp Nebula due to its shape. I took this image over five nights in August using a C8, an ASI294mc Pro camera and a total exposure time of around 13 hours (details in image) #Astrophotography
@kat-astro-bot.bsky.social
Foto des planetarischen Nebels Sharpless 188, der wegen der Form seiner hellsten Bereiche auch Shrimp- oder Garnelen-Nebel genannt wird. Die Aufnahme entstand mit einer Astrokamera ASI294mc Pro durch ein Teleskop C8, Belichtungszeit insgesamt 13h 11min
November 6, 2025 at 6:54 PM
Reposted by Astrometry Bot
brisbaneastro.bsky.social
NGC288 is a globular cluster located roughly 28,700 light-years away. Compared to denser globulars like 47 Tucanae, NGC 288’s lower stellar density reveals internal structure and sparse halo, making it an excellent target for small-to-medium telescopes. #astrophotography @kat-astro-bot.bsky.social
NGC 288 — Globular Cluster in Sculptor NGC 288 is an ancient globular cluster located roughly 28,700 light-years away in the constellation Sculptor. With an age of around 12 billion years, this loose and sparsely concentrated cluster contains hundreds of thousands of stars bound together by gravity, orbiting the Milky Way’s halo. Compared to denser globulars like 47 Tucanae, NGC 288’s lower stellar density reveals its delicate internal structure and sparse halo, making it an excellent target for small-to-medium telescopes. Imaging details Telescope: Celestron EdgeHD 8" Camera: ZWO ASI533MC Pro Mount: Sky-Watcher EQ6-R Pro Filter: UV/IR cut Exposure: 87 × 180 s subs Integration time: 4 hours 21 minutes Captured under Bortle 6 skies near Brisbane.
November 5, 2025 at 10:53 PM
Reposted by Astrometry Bot
bflachsbart.bsky.social
Wolf’s Cave Nebula (LDN 1217 / vdB 152) captured on two nights a couple of weeks ago 😊🔭

This was shot on the EdgeHD 8 with Hyperstar for a total integration time of about 8.5 hours. I combined OSC and mono Ha data for this image.

#Astrophotography

@kat-astro-bot.bsky.social‬ what do you see?
Wolf’s Cave Nebula is a peculiar target: A reflection nebula at the tip of dark nebula. And this strange combo is even accompanied by an ancient planetary nebula and some supernova remnant filaments. All in one frame!
November 5, 2025 at 7:01 PM
Reposted by Astrometry Bot
brisbaneastro.bsky.social
NGC 1261 is an ancient globular cluster lying around 53,000 ly from Earth. Containing hundreds of thousands of stars bound tightly by gravity, this cluster is part of the Milky Way’s outer halo, a relic from the early epochs of galactic formation. #astrophotography
@kat-astro-bot.bsky.social
NGC 1261 — Ancient Stars in Horologium NGC 1261 is a dense globular cluster located roughly 53,000 light-years away in the southern constellation Horologium. Containing hundreds of thousands of ancient, metal-poor stars, it belongs to the Milky Way’s outer halo — a population of clusters thought to have formed during the early assembly of our Galaxy more than 10 billion years ago. The cluster spans about 50 light-years and exhibits a prominent core rich in evolved red giants and horizontal-branch stars. These low-mass, hydrogen-depleted remnants trace some of the oldest stellar populations still visible today, offering a glimpse into conditions in the early universe. Imaging details • Telescope: Celestron EdgeHD 8" • Camera: ZWO ASI533MC Pro • Mount: Sky-Watcher EQ6-R Pro • Filter: UV/IR Cut • Exposure: 87 × 180 s (4 h 21 m total) • Processing: PixInsight
November 5, 2025 at 10:22 AM
Reposted by Astrometry Bot
brisbaneastro.bsky.social
Messier 27, often called the Dumbbell Nebula, is a planetary nebula about 1,360 light-years away in the constellation Vulpecula. This image maps light emitted by Sii, Hα, and Oiii gas. The shock-excited structures expanding at roughly 30 km/s. #astrophotography @kat-astro-bot.bsky.social
Messier 27, often called the Dumbbell Nebula, is a planetary nebula about 1,360 light-years away in the constellation Vulpecula. It marks the final evolutionary stage of a sun-like star, which has expelled its outer layers after exhausting its nuclear fuel. The exposed core — now a white dwarf with a surface temperature near 85,000 K — energises the surrounding gas, causing it to glow in distinct emission lines. This image maps light emitted by ionised sulphur (S II), hydrogen (H α), and oxygen (O III). The outer filaments trace slower, cooler ejecta rich in sulphur and hydrogen, while the inner lobes shine strongly in oxygen, revealing shock-excited structures expanding at roughly 30 km/s. Imaging details: Telescope: 800 mm Newtonian Reflector Camera: ZWO ASI1600MM Pro Filters: ZWO S II (7 nm), H α (7 nm), O III (7 nm) Integration time: 4.5 hours per channel (13.5 hours total) Acquisition: N.I.N.A. Processing: PixInsight The Dumbbell Nebula offers a glimpse of what awaits our own Sun in several billion years — a fading ember surrounded by the beautiful debris of its former self, slowly dispersing into the interstellar medium.
November 3, 2025 at 7:26 AM
Reposted by Astrometry Bot
astronald.bsky.social
🔭 Last night the clouds suddenly cleared, so I quickly set up the Seestar outside. I was able to capture the Iris Nebula for about 2 hours (until it started raining again at 10:15 p.m.) 😀
* Distance: 1,300 lj
* Const: Cepheus
* Mag: 6.8
#Astrophotography #seestar #NGC7023 @kat-astro-bot.bsky.social
November 2, 2025 at 1:12 PM
Reposted by Astrometry Bot
monel76.bsky.social
An almost random area in Cassiopea, NGC663 and three other open clusters. What an incredible sky area! 🔭 #astronomy #astrophotography @kat-astro-bot.bsky.social
October 30, 2025 at 8:13 PM
Reposted by Astrometry Bot
monel76.bsky.social
NGC7293 Helix Nebula, 2 hours 40 minutes, William Optics Megrez 72fd with 0,8x, ASI533MC pro, SVBony SV220 H-Alpha/Oiii filter, Celestron CG-4 #astronomy #astrophotography 🔭 @siril.org @kat-astro-bot.bsky.social @gimpofficial.bsky.social
Processed with Siril 1.4.3 and GIMP.
NGC7293
October 30, 2025 at 7:18 PM
Reposted by Astrometry Bot
clayennisastro.bsky.social
These young, hot blue stars formed only about 100 million years ago. They are called The Pleiades! They are visible with the naked eye and are located around 440 light years away! #astronomy #universe #Astrophotography #star @kat-astro-bot.bsky.social
October 30, 2025 at 2:24 AM
Reposted by Astrometry Bot
monel76.bsky.social
IC63 Ghost of Cassiopeia, 90 minutes, William Optics Megrez 72fd with 0,8x, ASI533MC pro, SVBony SV220 H-Alpha/Oiii filter, Celestron CG-4 #astronomy #astrophotography 🔭 @siril.org @kat-astro-bot.bsky.social @gimpofficial.bsky.social
Processed with Siril 1.4.3 and GIMP.
IC63
October 29, 2025 at 8:20 PM
Reposted by Astrometry Bot
monel76.bsky.social
M52 , NGC7635 and surroundings , 90 minutess, William Optics Megrez 72fd with 0,8x, ASI533MC pro, SVBony SV220 H-Alpha/Oiii, Celestron CG-4 #astronomy #astrophotography 🔭 @siril.org @kat-astro-bot.bsky.social @gimpofficial.bsky.social
Processed with Siril 1.4.3 and GIMP.
NGC7635 and M52
October 29, 2025 at 8:17 PM
Reposted by Astrometry Bot
monel76.bsky.social
Perseus Double Clusters in Perseus 30 minutes. William Optics Megrez 72fd and ASI533MC Pro. It is a very weak object that is usually photographed with monochrome cameras. 🔭 #astrophotography #astronomy @kat-astro-bot.bsky.social
Perseus Double Clusters
October 29, 2025 at 8:05 PM
Reposted by Astrometry Bot
astroaf.space
Comet C/2025 A6 (Lemmon)
Long-period comet discovered by the Mount Lemmon Survey in January 2025.
Once-in-a-lifetime comet, originating from the Oort Cloud. Returns in 40,000 years.

@celestronuniverse.bsky.social EdgeHD 8 @ 388 mm.
#astrophotography #cometlemmon #astroaf
@kat-astro-bot.bsky.social
Comet C/2025 A6 (Lemmon) Long-period comet discovered by the Mount Lemmon Survey in January 2025. Once-in-a-lifetime comet, originating from the Oort Cloud. Returns in 40,000 years.
October 28, 2025 at 2:10 PM
Reposted by Astrometry Bot
nrutkowski.bsky.social
Been a busy year but getting back into it with the Elephants Trunk Nebula IC1396.

🔭 - Askar 130PHQ at 1000mm
📷 - ZWO 2600MM Pro
🕓 - 9 hours SHO

Processed with @siril.org

@kat-astro-bot.bsky.social
October 27, 2025 at 2:36 AM
Reposted by Astrometry Bot
deepskydetail.bsky.social
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
October 26, 2025 at 5:13 PM
Reposted by Astrometry Bot
bflachsbart.bsky.social
LDN 1165 captured on two nights a couple of weeks ago 😊🔭

This was shot on the EdgeHD 8 with Hyperstar for a total integration time of 7 hours in OSC and Mono. I used the mono Ha data to enhance the red and the luminance details.

#Astrophotography

@kat-astro-bot.bsky.social‬ what do you see?
LDN 1165 is a dark nebula which really appears to be pitch black. Processing this image was more challenging than I expected. LDN 1165 is located in the constellation of Cepheus and it lies at a distance of about 1000 light years from Earth.
October 26, 2025 at 2:21 PM
Reposted by Astrometry Bot
ltno2.bsky.social
Dark dust clouds in Perseus with the #Embryo nebula NGC1333 in the bottom left corner. Shot this 7 days ago from my backyard. #astrophotgraphy 🔭📷 reveals what our eyes won't always see....but it's not because we don't see it that it's not there. Where do you put this @kat-astro-bot.bsky.social?
Dark interstellar clouds shot in LRGB with a 130mm Astro-Physics Starfire refractor and a PlayerOne Poseidon-M monochrome camera. 100x120s for luminance. 45x60s for each RGB channel. The target is the surrounding area about NGC1333 the Eskimo nebula which sits in the lower left part of the image. Dark interstellar clouds shot in LRGB with a 130mm Astro-Physics Starfire refractor and a PlayerOne Poseidon-M monochrome camera. 100x120s for luminance. 45x60s for each RGB channel. The target is the surrounding area about NGC1333 the Eskimo nebula which sits in the lower left part of the image.
October 23, 2025 at 8:18 PM