Trestan Simon
@flare.observer
he/him; solar astrophysics, Wikipedia, and FOSS/Linux; undergrad at CU Boulder/LASP; the.flare.observer
They existed. This image is from 2012 at the latest
October 8, 2025 at 10:44 AM
They existed. This image is from 2012 at the latest
Testing this with SDO/AIA imagery of a series of eruptions from 2023 ☀️
July 29, 2025 at 5:25 AM
Testing this with SDO/AIA imagery of a series of eruptions from 2023 ☀️
Not the usual Sun I study
July 18, 2025 at 10:24 PM
Not the usual Sun I study
Small steam devils forming from the fog above a pool (water temp was 76°F and outside air temp was 56°F)
May 21, 2025 at 4:55 AM
Small steam devils forming from the fog above a pool (water temp was 76°F and outside air temp was 56°F)
I just realized that the CU Boulder guest Wi-Fi default gateway is blocking all of my NTP packets... so I am right next to NIST physically but am not allowed to synchronize with their public time servers? 128.138.140.44 is utcnist.colorado.edu
April 5, 2025 at 8:04 PM
I just realized that the CU Boulder guest Wi-Fi default gateway is blocking all of my NTP packets... so I am right next to NIST physically but am not allowed to synchronize with their public time servers? 128.138.140.44 is utcnist.colorado.edu
Hα flare ribbons observed between the two peaks of a double-peak soft-X-ray flare of GOES class X1.0 and M7.3 on 2024 June 1. ☀️ #astrophotography
March 25, 2025 at 4:14 AM
Hα flare ribbons observed between the two peaks of a double-peak soft-X-ray flare of GOES class X1.0 and M7.3 on 2024 June 1. ☀️ #astrophotography
Once again defeated by compression. Here is a nicer looking screenshot mid-eruption.
February 2, 2025 at 1:52 PM
Once again defeated by compression. Here is a nicer looking screenshot mid-eruption.
Here is an eruption over the Sun's northwestern limb observed in SDO/AIA's 171 Å passband a couple of years ago. Found this when I was cleaning an SSD, so I thought I'd share. (Footage courtesy of NASA/SDO and the AIA science team.) ☀️🔭
February 2, 2025 at 12:30 PM
Here is an eruption over the Sun's northwestern limb observed in SDO/AIA's 171 Å passband a couple of years ago. Found this when I was cleaning an SSD, so I thought I'd share. (Footage courtesy of NASA/SDO and the AIA science team.) ☀️🔭
This diagram I made and uploaded to Wikimedia Commons when I was 16 ended up being used in a peer-reviewed popular-science book. I dislike how the diagram turned out in hindsight, but I am flattered that someone decided it was usable for publication.
January 17, 2025 at 1:38 AM
This diagram I made and uploaded to Wikimedia Commons when I was 16 ended up being used in a peer-reviewed popular-science book. I dislike how the diagram turned out in hindsight, but I am flattered that someone decided it was usable for publication.
Here is how I have been contributing to Wikipedia in 2024. This year I also worked on two research projects at LASP, completed my 2nd and 3rd semesters of college, and started a UROP-funded assistantship. It was a productive year for me personally. #wikipediaYIR
December 26, 2024 at 10:20 PM
Here is how I have been contributing to Wikipedia in 2024. This year I also worked on two research projects at LASP, completed my 2nd and 3rd semesters of college, and started a UROP-funded assistantship. It was a productive year for me personally. #wikipediaYIR
Happy holidays ☀️ (Data were acquired by GONG instruments operated by NISP/NSO/AURA/NSF with contribution from NOAA; see alt text)
December 25, 2024 at 2:37 AM
Happy holidays ☀️ (Data were acquired by GONG instruments operated by NISP/NSO/AURA/NSF with contribution from NOAA; see alt text)
My version of the three kitten brothers meme ☀️
December 12, 2024 at 4:09 PM
My version of the three kitten brothers meme ☀️
Most recent edit summary on En Wikipedia's article for SOHO: "this is not dragonball". lol ☀️
December 5, 2024 at 12:03 AM
Most recent edit summary on En Wikipedia's article for SOHO: "this is not dragonball". lol ☀️
I was downloading AIA data from JSOC at the exact moment it went down and had no idea this was the cause. I hope everyone is alright.
November 27, 2024 at 3:21 AM
I was downloading AIA data from JSOC at the exact moment it went down and had no idea this was the cause. I hope everyone is alright.
Here is the full text. It can also be found on page 88 of this 1972 NOAA technical memorandum:
repository.library.noaa.gov/view/noaa/18...
repository.library.noaa.gov/view/noaa/18...
November 27, 2024 at 2:27 AM
Here is the full text. It can also be found on page 88 of this 1972 NOAA technical memorandum:
repository.library.noaa.gov/view/noaa/18...
repository.library.noaa.gov/view/noaa/18...
Sensationalist space weather article published during the August 1972 solar storms. It is not unlike the space weather clickbait of today...
November 27, 2024 at 2:27 AM
Sensationalist space weather article published during the August 1972 solar storms. It is not unlike the space weather clickbait of today...
Another video of a solar prominence eruption that I had posted about before video was supported on Bluesky ☀️🔭
November 24, 2024 at 5:24 AM
Another video of a solar prominence eruption that I had posted about before video was supported on Bluesky ☀️🔭
I originally shared this filament eruption before video was supported on Bluesky, so here's the video. 🔭
November 13, 2024 at 8:21 PM
I originally shared this filament eruption before video was supported on Bluesky, so here's the video. 🔭
There are seven different numbered NOAA solar active regions pictured here. H-alpha image taken on 27-07-2024 at 17:46 UTC.
July 28, 2024 at 4:37 AM
There are seven different numbered NOAA solar active regions pictured here. H-alpha image taken on 27-07-2024 at 17:46 UTC.
Solar filament eruption from February 6 originating in active region 13575. This region has since rotated behind the limb where it was responsible for yesterday's X3.3-class solar flare. (Footage courtesy of NASA/SDO and the AIA science team.) 🔭
February 10, 2024 at 9:50 AM
Solar filament eruption from February 6 originating in active region 13575. This region has since rotated behind the limb where it was responsible for yesterday's X3.3-class solar flare. (Footage courtesy of NASA/SDO and the AIA science team.) 🔭
November 27, 2023 at 10:38 AM
Solar filament dangling off of the Sun's southeastern limb captured 2023-11-20 in H-alpha. Active region 3489 is to the west, and the edge of active regions 3493 and 3494 are to the north. This prominence/filament has since erupted. 🔭
November 23, 2023 at 11:55 AM
Solar filament dangling off of the Sun's southeastern limb captured 2023-11-20 in H-alpha. Active region 3489 is to the west, and the edge of active regions 3493 and 3494 are to the north. This prominence/filament has since erupted. 🔭
Coronal mass ejection (CME) from earlier today with a classic light bulb silhouette visible in both GOES/SUVI 304 Å and in SOHO/LASCO C1 and C2 🔭
November 16, 2023 at 7:02 PM
Coronal mass ejection (CME) from earlier today with a classic light bulb silhouette visible in both GOES/SUVI 304 Å and in SOHO/LASCO C1 and C2 🔭