Huh. A recruiter just approached me on LinkedIn, because one of his clients is looking for people with experience with IRAF/AstroImageJ? Which seems oddly specific.
September 1, 2026 at 6:58 PM
Huh. A recruiter just approached me on LinkedIn, because one of his clients is looking for people with experience with IRAF/AstroImageJ? Which seems oddly specific.
Sunworks ! ☀️
Calculating a coronal mass ejection speed. More than 700km/s 😬
#astronomy
#solarastronomy
#science
#practicalworks
#solaractivity
#AstroImageJ
Calculating a coronal mass ejection speed. More than 700km/s 😬
#astronomy
#solarastronomy
#science
#practicalworks
#solaractivity
#AstroImageJ
March 29, 2026 at 5:37 AM
Sunworks ! ☀️
Calculating a coronal mass ejection speed. More than 700km/s 😬
#astronomy
#solarastronomy
#science
#practicalworks
#solaractivity
#AstroImageJ
Calculating a coronal mass ejection speed. More than 700km/s 😬
#astronomy
#solarastronomy
#science
#practicalworks
#solaractivity
#AstroImageJ
Processing done in the incredible free software AstroImageJ, a total of 190 images taken with 60sec exposure and gain 100. Analysis of the transit shows the planet is about the size of Jupiter based on the size of the Star which is about 0.5 the size of the Sun.
December 26, 2025 at 11:11 PM
Processing done in the incredible free software AstroImageJ, a total of 190 images taken with 60sec exposure and gain 100. Analysis of the transit shows the planet is about the size of Jupiter based on the size of the Star which is about 0.5 the size of the Sun.
For more info on this transit find it here here exoplanetarchive.ipac.caltech.edu/overview/Qat... data processed in AstroImageJ. Scope 190MN camera ZWO ASI 2600MM
Qatar-9 | NASA Exoplanet Archive
exoplanetarchive.ipac.caltech.edu
December 27, 2025 at 3:03 PM
For more info on this transit find it here here exoplanetarchive.ipac.caltech.edu/overview/Qat... data processed in AstroImageJ. Scope 190MN camera ZWO ASI 2600MM
Avec mon code fait maison - AstroCal, public sur mon GitHub - j'ai mesuré la magnitude apparente de SN2025fvw, et son augmentation en 20 jours. Les valeurs de différences de magnitude entre les deux observations sont consistantes avec les précédentes (mesurées avec AstroImageJ) 😋
May 2, 2025 at 7:46 PM
Avec mon code fait maison - AstroCal, public sur mon GitHub - j'ai mesuré la magnitude apparente de SN2025fvw, et son augmentation en 20 jours. Les valeurs de différences de magnitude entre les deux observations sont consistantes avec les précédentes (mesurées avec AstroImageJ) 😋
Set up:
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 60 mins
📍Balmain, Bortle 9
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 60 mins
📍Balmain, Bortle 9
December 11, 2024 at 9:12 PM
Set up:
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 60 mins
📍Balmain, Bortle 9
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 60 mins
📍Balmain, Bortle 9
Working on five and a half years of observations of quasar 3C 273, using open data from LCO Global Obs, AstroImageJ, Peranso and a little bit of Astropy. 🤩Time to read the extensive litterature on this bright and intriguing QSO !
#astronomy
#extragalactic
#science
#AstroSci
#astronomy
#extragalactic
#science
#AstroSci
June 29, 2025 at 4:01 PM
Working on five and a half years of observations of quasar 3C 273, using open data from LCO Global Obs, AstroImageJ, Peranso and a little bit of Astropy. 🤩Time to read the extensive litterature on this bright and intriguing QSO !
#astronomy
#extragalactic
#science
#AstroSci
#astronomy
#extragalactic
#science
#AstroSci
The young Pleiades in all their glory, which I managed to shoot two nights ago using my backyard #Astrophotography 🔭📷 setup. I made a bad attempt at fitting a 100My isochrone over my poorly calibrated data to show this...don't try this at home kids 😇.
@kat-astro-bot.bsky.social, what do you see?
@kat-astro-bot.bsky.social, what do you see?
September 19, 2025 at 4:46 PM
The young Pleiades in all their glory, which I managed to shoot two nights ago using my backyard #Astrophotography 🔭📷 setup. I made a bad attempt at fitting a 100My isochrone over my poorly calibrated data to show this...don't try this at home kids 😇.
@kat-astro-bot.bsky.social, what do you see?
@kat-astro-bot.bsky.social, what do you see?
Last night most of the class went through how to process that data using AstroimageJ. One group used the telescope since it was so clear.
September 10, 2024 at 12:09 PM
Last night most of the class went through how to process that data using AstroimageJ. One group used the telescope since it was so clear.
Set up:
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
April 30, 2023 at 6:44 AM
Set up:
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MM chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
That's awesome ! I followed a similar class in France, given by the Côte d'Azur Observatory 😁 And at the end, I observed (6) Hebe during two nights, with three filters ! I even tried to invert the light curves to get a convex profile 😮
July 2, 2024 at 5:57 AM
That's awesome ! I followed a similar class in France, given by the Côte d'Azur Observatory 😁 And at the end, I observed (6) Hebe during two nights, with three filters ! I even tried to invert the light curves to get a convex profile 😮
Thanks! For this I use Tycho Tracker for getting apparent magnitudes. I also use AstroImageJ, but that doesn't give apparent magnitudes unless you first provide them for your comp stars. I typically use that when I'm working in relative flux like with exoplanet transits.
May 11, 2025 at 9:56 PM
Thanks! For this I use Tycho Tracker for getting apparent magnitudes. I also use AstroImageJ, but that doesn't give apparent magnitudes unless you first provide them for your comp stars. I typically use that when I'm working in relative flux like with exoplanet transits.
スマートフォンにアリエクで1000円の回折格子を装着してスペクトル撮影にトライ。「1/100mm格子定数のフィルム」では若干不足で1/300mmを発注中。「ImageJベースの天体解析ソフトAstroImageJ（AIJ）」。
「鳥取天文協会 ブログ」よりピックアップ。
toritenkyo.blogspot.com/2026/09/blog...
「鳥取天文協会 ブログ」よりピックアップ。
toritenkyo.blogspot.com/2026/09/blog...
スマートフォンのレンズで星のスペクトルを撮る
投稿者：ASHI58 星からの光（電磁波）は、星の成分や動き、惑星の存在などを知る唯一の手段（重力波を除く）です。特に、私たちが使える光は可視光領域なので、分光器が必要になります。 分光器は回折格子を使って、光をスペクトル（光の帯）に分けます。これには、透明なフィルムや...
toritenkyo.blogspot.com
September 4, 2026 at 1:20 AM
スマートフォンにアリエクで1000円の回折格子を装着してスペクトル撮影にトライ。「1/100mm格子定数のフィルム」では若干不足で1/300mmを発注中。「ImageJベースの天体解析ソフトAstroImageJ（AIJ）」。
「鳥取天文協会 ブログ」よりピックアップ。
toritenkyo.blogspot.com/2026/09/blog...
「鳥取天文協会 ブログ」よりピックアップ。
toritenkyo.blogspot.com/2026/09/blog...
I did 2 sets of 10 images with Sloan i and g filters. By using TYC2037-1231-1 as a reference star and AstroImageJ for the analysis, I have measured T CrB with a magnitude 8.405+/-0.009 in i and 11.12+/-0.01 in g.
This result has been uploaded into the AAVSO database.
This result has been uploaded into the AAVSO database.
April 10, 2024 at 5:12 PM
I did 2 sets of 10 images with Sloan i and g filters. By using TYC2037-1231-1 as a reference star and AstroImageJ for the analysis, I have measured T CrB with a magnitude 8.405+/-0.009 in i and 11.12+/-0.01 in g.
This result has been uploaded into the AAVSO database.
This result has been uploaded into the AAVSO database.
January 28, 2025 at 6:37 PM
Currently going through tutorials of AstroimageJ for processing exoplanet transits. I'm still applying for #PhDJobs while I work on my projects.
#Astronomy
#PhD
#Astronomy
#PhD
May 11, 2025 at 3:04 PM
Currently going through tutorials of AstroimageJ for processing exoplanet transits. I'm still applying for #PhDJobs while I work on my projects.
#Astronomy
#PhD
#Astronomy
#PhD
Yes it did the conversion in AstroimageJ, I had a bit of time to run through the processing again, I think it was down to the transit fit parameters, this time it matched up must closer.
January 6, 2026 at 7:04 AM
Yes it did the conversion in AstroimageJ, I had a bit of time to run through the processing again, I think it was down to the transit fit parameters, this time it matched up must closer.
Set up:
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MC (colour) chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MC (colour) chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
May 5, 2023 at 2:35 AM
Set up:
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MC (colour) chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
🔭 Celestron Nexstar Evolution 8” SCT using Alt-Az mount
📸 zwoasi 1600MC (colour) chilled to -15°C and Astronomik CLS filter
🎞 ASICAP live stacking software
🎛 processed in AstroImageJ, PS and Insta
⏱ total integration: 30 mins data all pics / 10 second sub-ints
📍Balmain, Bortle 9
What software do you use to calculate magnitude? Tycho tracker, AstroImageJ ? Another ?
October 18, 2025 at 7:13 AM
What software do you use to calculate magnitude? Tycho tracker, AstroImageJ ? Another ?
OK #astronomy folks. I am learning #AstroImageJ and have run dark subtraction on my sequence. The DP log says it saved the output files and they look fine as they pop up during processing. But when I open them later, they are literally completely black--no counts anywhere.
November 4, 2024 at 2:36 PM
OK #astronomy folks. I am learning #AstroImageJ and have run dark subtraction on my sequence. The DP log says it saved the output files and they look fine as they pop up during processing. But when I open them later, they are literally completely black--no counts anywhere.