Trygve Prestgard
banner
trygveprestgard.bsky.social
Trygve Prestgard
@trygveprestgard.bsky.social
Postdoctoral researcher in (micro)meteoritics. I'm also a comet and deep sky enthusiast! He/him.
Was going through my old laptop and found this animation of comet Kudo-Fujikawa transiting the SOHO/LASCO C2 FOV! The images are from January 2003. Enjoy! ☄️
#CometWatch #ESA #NASA
November 20, 2025 at 3:04 PM
Comet C/2025 A6 (Lemmon) is entering the STEREO/SECCHI HI1-A camera's FOV! So far, only low-quality data is available. ☄️
#CometWatch
November 8, 2025 at 12:59 PM
Cute! 😍 Yesterday a small Kreutz-group comet discovered in CCOR-1 was found to be "double" when it entered the SOHO/LASCO C2 FOV! Close sungrazer fragments are personally my favorite! ☄️☄️
#CometWatch #Sungrazer
November 3, 2025 at 9:48 PM
About 37 years ago, the final moments of #comet C/1988 Q1 were captured by the Solar Maximum Mission. The below animation contains the only images of this sungrazer, which may have reached negative magnitudes prior to disintegrating! Image credit: The HAO/SMM C/P project team & #NASA
#CometWatch
August 31, 2025 at 12:23 PM
Yesterday a fragment of Kracht-II group comet P/2002 R5 (SOHO) was reobserved! This periodic comet likely split in 2002 and was recovered as two fragments in 2008, then as four in 2014 and 2019! It was recovered in public data from the CCOR-1 telescope, but was also visible in LASCO. ☄️
#CometWatch
August 16, 2025 at 3:20 PM
Today SOHO/LASCO C3 caught this cool image of a bunch of dust passing infront of the camera. It's likely the result of debris released by the spacecraft's insulation layers from a tiny micrometeorite impact. ☄️
August 10, 2025 at 8:28 AM
Nine years ago this beautiful Kreutz-group sungrazer (SOHO-3109) was plunging towards its demise! Likely reaching mag 0 at its brightest, it is one of the brightest SOHO-discovered comets ever observed! ☄️ #CometWatch
August 3, 2025 at 12:37 PM
It seems that a small cloud of particles passed infront of the SOHO/LASCO telescopes yesterday, leading to these pretty images! The cause was most likely debris flaking off the spacecraft's insulation layers, possibly from a small micrometeorite impact. This is actually not uncommon! ☄️
March 18, 2025 at 2:25 PM
In addition to C/2024 G3 (ATLAS), a tiny Kreutz-group sungrazer also briefly made an appearance in SOHO/LASCO C3! Unfortunately, the small sungrazer rapidly fell apart. Both comets are (were) completely unrelated. ☄️
January 16, 2025 at 5:01 PM
An updated animation of C/2024 G3 (ATLAS) transiting the SOHO/LASCO C3 FOV! ☄️
January 13, 2025 at 7:30 PM
Comet C/2024 G3 (ATLAS) is currently entering the SOHO/LASCO C3 FOV, looking very bright! ☄️
January 12, 2025 at 7:43 AM
Was scrolling through DECaLS images and came across this rare polar-ring galaxy! This one, designated 2MASX J13594168+2500460, is also an active galaxy. 😍
December 20, 2024 at 2:54 PM
It's so cool that already-processed real time DSCOVR/EPIC images are accessible online! Below is an animation I put together showing the shadow of the April 8th (2024) solar eclipse! 😃 Data can be found here: epic.gsfc.nasa.gov
December 16, 2024 at 12:55 PM
Oued Chebeika 002 is the first CI chondrite "find"! Until now, all CIs have been "falls". This is interesting as the porous nature of CIs implies rapid desctruction through weathering. CIs are interesting due to their chemical primitivity, plus are analogous to asteroid Ryugu! ☄️
December 6, 2024 at 8:49 AM