From @noirlabastro.bsky.social: We are revisiting one of our most-loved Images of the Week! #5: the Anglerfish cluster! MACS J0060.1-2008 is famous for its strong gravitational lensing effect. #astronomy Gemini Observatory/NOIRLab/NSF/AURA. Processing: J. Miller, M. Rodriguez, T. Rector, M. Zamani.

From @noirlabastro.bsky.social: We are revisiting one of our most-loved Images of the Week! #5: the Anglerfish cluster! MACS J0060.1-2008 is famous for its strong gravitational lensing effect. #astronomy Gemini Observatory/NOIRLab/NSF/AURA. Processing: J. Miller, M. Rodriguez, T. Rector, M. Zamani.

Here is a summary of observations from both Gemini telescopes in October 2025, divided by instrument and color-coded by location. Gemini's Zorro took the most observations again this month, totaling over 3,500! #Astronomy

Here is a summary of observations from both Gemini telescopes in October 2025, divided by instrument and color-coded by location. Gemini's Zorro took the most observations again this month, totaling over 3,500! #Astronomy

Queue programs observed at Gemini Observatory N/S on 11/03/25 (http://bit.ly/2KhLox3) #astronomy:

Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Project, by Gastón Folatelli et al. 2013 ui.adsabs.harvard.edu/abs/2013ApJ....

Queue programs observed at Gemini Observatory N/S on 11/02/25 (http://bit.ly/2KhLox3) #astronomy:

Queue programs observed at Gemini Observatory N/S on 11/01/25 (http://bit.ly/2KhLox3) #astronomy:

Queue programs observed at Gemini Observatory N/S on 10/31/25 (http://bit.ly/2KhLox3) #astronomy:

This week’s image is of the supernova SN2011fe (the bright blue object in the upper right of the image)! This star’s explosive death was observed in the galaxy M101, about 20 million light-years away from us. Check out the 🧵 for more papers involving supernovae! #Astronomy 📸 credit in thread

Queue programs observed at Gemini Observatory N/S on 10/30/25 (http://bit.ly/2KhLox3) #astronomy:

This week’s image is of the supernova SN2011fe (the bright blue object in the upper right of the image)! This star’s explosive death was observed in the galaxy M101, about 20 million light-years away from us. Check out the 🧵 for more papers involving supernovae! #Astronomy 📸 credit in thread

Queue programs observed at Gemini Observatory N/S on 10/29/25 (http://bit.ly/2KhLox3) #astronomy:

From @noirlabastro.bsky.social: Galaxies NGC 3169 (left) and NGC 3166 resemble a pair of glowing eyes in the void. They will eventually merge into a single galaxy. #astronomy 📷: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)

Science observations @GeminiObs from 2025-10-23 to 2025-10-29: #astronomy

Attention Gemini users: DRAGONS 4.1 is now available! This new version includes support for GNIRS cross-dispersed data and other improvements. More information, including the release notes: dragons.readthedocs.io/en/stable/. Reach out if you have any feedback or issues to report! #astronomy

From @noirlabastro.bsky.social: Galaxies NGC 3169 (left) and NGC 3166 resemble a pair of glowing eyes in the void. They will eventually merge into a single galaxy. #astronomy 📷: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)

Attention Gemini users: DRAGONS 4.1 is now available! This new version includes support for GNIRS cross-dispersed data and other improvements. More information, including the release notes: dragons.readthedocs.io/en/stable/. Reach out if you have any feedback or issues to report! #astronomy

Did you know the US NGO offers reduced spectra to GHOST programs from all Gemini Observatory partner countries? Read more about it here: ui.adsabs.harvard.edu/abs/2024RNAA... #astronomy

Queue programs observed at Gemini Observatory N/S on 10/26/25 (http://bit.ly/2KhLox3) #astronomy:

Did you know the US NGO offers reduced spectra to GHOST programs from all Gemini Observatory partner countries? Read more about it here: ui.adsabs.harvard.edu/abs/2024RNAA... #astronomy

This week’s image is of the ultra-faint dwarf galaxy Pegasus V, initially found in archival Dark Energy Camera data. This color image comprises images taken with @GeminiObs GMOS-N with two optical filters (475 nm and 630 nm). Check out the 🧵 for more dwarf galaxies! #Astronomy 📸 credit in thread

Queue programs observed at Gemini Observatory N/S on 10/25/25 (http://bit.ly/2KhLox3) #astronomy:

Queue programs observed at Gemini Observatory N/S on 10/24/25 (http://bit.ly/2KhLox3) #astronomy:

This week’s image is of the ultra-faint dwarf galaxy Pegasus V, initially found in archival Dark Energy Camera data. This color image comprises images taken with @GeminiObs GMOS-N with two optical filters (475 nm and 630 nm). Check out the 🧵 for more dwarf galaxies! #Astronomy 📸 credit in thread

Queue programs observed at Gemini Observatory N/S on 10/23/25 (http://bit.ly/2KhLox3) #astronomy:

Queue programs observed at Gemini Observatory N/S on 10/22/25 (http://bit.ly/2KhLox3) #astronomy:

Throwback post: The dome may not be open during the day at Gemini South, but that doesn't mean we can't collect light from our closest star with our solar panels☀️. "Observing" the Sun during the day helps us observe *everything else* at night! #sustainability #Astronomy

Throwback post: The dome may not be open during the day at Gemini South, but that doesn't mean we can't collect light from our closest star with our solar panels☀️. "Observing" the Sun during the day helps us observe *everything else* at night! #sustainability #Astronomy

Queue programs observed at Gemini Observatory N/S on 10/21/25 (http://bit.ly/2KhLox3) #astronomy:

Science observations @GeminiObs from 2025-10-16 to 2025-10-22: #astronomy

From @noirlabastro.bsky.social: “Open the pod bay doors, please, HAL.” The Gemini South telescope is seen here with its louvers open to allow cool, stable air to flow through and around the observatory, improving observations. #astronomy International Gemini Observatory/NOIRLab/NSF/AURA

Do you have Gemini GMOS MOS and IFU data and don’t know how to reduce it? Don’t panic, we have here the solution for you: the GMOS Data Reduction Cookbook nsf-noirlab.gitlab.io/csdc/usngo/g... #astronomy

Queue programs observed at Gemini Observatory N/S on 10/20/25 (http://bit.ly/2KhLox3) #astronomy:

From @noirlabastro.bsky.social: “Open the pod bay doors, please, HAL.” The Gemini South telescope is seen here with its louvers open to allow cool, stable air to flow through and around the observatory, improving observations. #astronomy International Gemini Observatory/NOIRLab/NSF/AURA

Do you have Gemini GMOS MOS and IFU data and don’t know how to reduce it? Don’t panic, we have here the solution for you: the GMOS Data Reduction Cookbook nsf-noirlab.gitlab.io/csdc/usngo/g... #astronomy

Queue programs observed at Gemini Observatory N/S on 10/19/25 (http://bit.ly/2KhLox3) #astronomy:

This week’s image is of the Orion “Bullets,” which was captured with Gemini's GSAOI. These structures are the result of iron gas (blue tips) rushing through neutral hydrogen gas (red pillars) due to nearby star formation. Check out a few paper highlights in the thread! #Astronomy 📸 credit in thread

Queue programs observed at Gemini Observatory N/S on 10/18/25 (http://bit.ly/2KhLox3) #astronomy:

Queue programs observed at Gemini Observatory N/S on 10/17/25 (http://bit.ly/2KhLox3) #astronomy:

This week’s image is of the Orion “Bullets,” which was captured with Gemini's GSAOI. These structures are the result of iron gas (blue tips) rushing through neutral hydrogen gas (red pillars) due to nearby star formation. Check out a few paper highlights in the thread! #Astronomy 📸 credit in thread

Queue programs observed at Gemini Observatory N/S on 10/16/25 (http://bit.ly/2KhLox3) #astronomy:

Queue programs observed at Gemini Observatory N/S on 10/15/25 (http://bit.ly/2KhLox3) #astronomy:

Throwback post: With the release of @NASAWebb's first amazing IR images, we want to showcase some of the great science conducted with Gemini’s GMOS-N on Stephan's Quintet, both with imaging and spectroscopy. Check out a few paper highlights in the thread! #Astronomy

Big main character energy here from Gemini South. Sure, the telescope conducts world-class research and captures jaw-dropping images with its 8.1‑meter mirror… but honestly, it knows it’s photogenic too. #astronomy 📷: International Gemini Observatory/NOIRLab/NSF/AURA/Kwon O Chul

Throwback post: With the release of @NASAWebb's first amazing IR images, we want to showcase some of the great science conducted with Gemini’s GMOS-N on Stephan's Quintet, both with imaging and spectroscopy. Check out a few paper highlights in the thread! #Astronomy

Queue programs observed at Gemini Observatory N/S on 10/14/25 (http://bit.ly/2KhLox3) #astronomy:

Science observations @GeminiObs from 2025-10-09 to 2025-10-15: #astronomy

Big main character energy here from Gemini South. Sure, the telescope conducts world-class research and captures jaw-dropping images with its 8.1‑meter mirror… but honestly, it knows it’s photogenic too. #astronomy 📷: International Gemini Observatory/NOIRLab/NSF/AURA/Kwon O Chul

From @noirlabastro.bsky.social: These ancient stars at the core of globular cluster NGC 6624 were captured by the Gemini South telescope. They are up to 12.5 billion years old, born when the Universe was just a fraction of its current age. #astronomy 📷: Gemini Observatory/NOIRLab/NSF/AURA