#bskycometography no. 357
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
November 8, 2025 at 3:37 PM
#bskycometography no. 357
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
C/1956 R1 (Arend-Roland)
1956 Nov 8: Discovered by S. J. V. Arend & G. Roland (Belgium) at 10 mag. Predisc of Nov 7 from Japan. The comet reached 1 mag around perihelion (1957 Apr 8 at 0.32 au). Max tail 30° and 15° sunward tail! Last seen on Apr 11.
☄️🔭 #CometWatch
#CometObs morning session. Two ATLAS comets under mediocre conditions
C/2025 K1: 10.1 mag, 1.5', DC4/, tail 0.1°, saw it last in August at ~12 mag & never thought I'd see it again. Tough little comet!
C/2025 T1: 10.4 mag, 3', DC3, brighter than expected, moving fast, my 187th visual comet
☄️🔭
C/2025 K1: 10.1 mag, 1.5', DC4/, tail 0.1°, saw it last in August at ~12 mag & never thought I'd see it again. Tough little comet!
C/2025 T1: 10.4 mag, 3', DC3, brighter than expected, moving fast, my 187th visual comet
☄️🔭
October 31, 2025 at 4:57 AM
#CometObs morning session. Two ATLAS comets under mediocre conditions
C/2025 K1: 10.1 mag, 1.5', DC4/, tail 0.1°, saw it last in August at ~12 mag & never thought I'd see it again. Tough little comet!
C/2025 T1: 10.4 mag, 3', DC3, brighter than expected, moving fast, my 187th visual comet
☄️🔭
C/2025 K1: 10.1 mag, 1.5', DC4/, tail 0.1°, saw it last in August at ~12 mag & never thought I'd see it again. Tough little comet!
C/2025 T1: 10.4 mag, 3', DC3, brighter than expected, moving fast, my 187th visual comet
☄️🔭
Last #CometObs before the moon break. Again, the two ATLAS comets.
C/2025 K1: 10.0 mag, DC5-6, Dia 1.3', 3' tail in PA 300°, a real miniature comet with a short tail! Amazing!
C/2025 T1: 10.3 mag, DC3, Dia 4'.
🔭☄️
C/2025 K1: 10.0 mag, DC5-6, Dia 1.3', 3' tail in PA 300°, a real miniature comet with a short tail! Amazing!
C/2025 T1: 10.3 mag, DC3, Dia 4'.
🔭☄️
November 3, 2025 at 7:19 AM
Last #CometObs before the moon break. Again, the two ATLAS comets.
C/2025 K1: 10.0 mag, DC5-6, Dia 1.3', 3' tail in PA 300°, a real miniature comet with a short tail! Amazing!
C/2025 T1: 10.3 mag, DC3, Dia 4'.
🔭☄️
C/2025 K1: 10.0 mag, DC5-6, Dia 1.3', 3' tail in PA 300°, a real miniature comet with a short tail! Amazing!
C/2025 T1: 10.3 mag, DC3, Dia 4'.
🔭☄️
#Comet 13P/Olbers with non-guided Canon EOS 600Da, 30x3.2 sec each, 50 mm/f2.8. Processing with Siril and Gimp.
Astonishing what is possible under bad skies, low above the horizon und unguided mount. Comet is marked.
Visually the comet is 7.4 mag with a wide and short conical dust tail.
#CometObs
🔭☄️
Astonishing what is possible under bad skies, low above the horizon und unguided mount. Comet is marked.
Visually the comet is 7.4 mag with a wide and short conical dust tail.
#CometObs
🔭☄️
August 13, 2024 at 8:17 AM
Observed ☄️ 12P/Pons-Brooks again in astronomical twilight. Made it 4.9 mag w/ a 0.3° tail in 10x50 binos. Showed it to my eldest son who had a hard time finding it & was disappointed after all the perfect comet images in the media. The press hype will mostly lead to disappointment. 🔭 #CometObs
March 25, 2024 at 7:32 PM
Observed ☄️ 12P/Pons-Brooks again in astronomical twilight. Made it 4.9 mag w/ a 0.3° tail in 10x50 binos. Showed it to my eldest son who had a hard time finding it & was disappointed after all the perfect comet images in the media. The press hype will mostly lead to disappointment. 🔭 #CometObs
A few hours later I went out again for further #CometObs
C/2021 S3 (PANSTARRS): 10.2 mag, DC 3, Dia 3'
C/2023 A3 (Tsuchinshan-ATLAS): 10.5 mag, DC 6/, Dia 2.5'
C/2023 A3 is very condensed and looks promising to put on a good show later this year.
Okay, need to get some sleep.
🔭☄️
C/2021 S3 (PANSTARRS): 10.2 mag, DC 3, Dia 3'
C/2023 A3 (Tsuchinshan-ATLAS): 10.5 mag, DC 6/, Dia 2.5'
C/2023 A3 is very condensed and looks promising to put on a good show later this year.
Okay, need to get some sleep.
🔭☄️
April 11, 2024 at 12:18 AM
A few hours later I went out again for further #CometObs
C/2021 S3 (PANSTARRS): 10.2 mag, DC 3, Dia 3'
C/2023 A3 (Tsuchinshan-ATLAS): 10.5 mag, DC 6/, Dia 2.5'
C/2023 A3 is very condensed and looks promising to put on a good show later this year.
Okay, need to get some sleep.
🔭☄️
C/2021 S3 (PANSTARRS): 10.2 mag, DC 3, Dia 3'
C/2023 A3 (Tsuchinshan-ATLAS): 10.5 mag, DC 6/, Dia 2.5'
C/2023 A3 is very condensed and looks promising to put on a good show later this year.
Okay, need to get some sleep.
🔭☄️
The nice thing about having a backyard to observe is that you can be quickly outside if the sky suddenly clears. Estimated comet 12P/Pons-Brooks btwn clouds after its recent outburst which brought it to 9.0 mag, DC 6, Dia 3'. Looks a bit like a planetary nebula in my 15-cm R @ 45x. #CometObs ☄️
🔭
🧪
🔭
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November 19, 2023 at 5:49 PM
The nice thing about having a backyard to observe is that you can be quickly outside if the sky suddenly clears. Estimated comet 12P/Pons-Brooks btwn clouds after its recent outburst which brought it to 9.0 mag, DC 6, Dia 3'. Looks a bit like a planetary nebula in my 15-cm R @ 45x. #CometObs ☄️
🔭
🧪
🔭
🧪
Guess what? I was lucky again. Conditions were quite bad but the comet was clearly brighter and more condensed. Made it 4.1 mag, corrected for differential extinction. This is at least 0.6 mag brighter than two evenings ago. #CometObs ☄️🔭
Can confirm looking at the current estimates at cobs.si where it is around 3.8-4.0 mag - almost 1 mag brighter than 24 hours ago.
Needless to say that my forecast for the remaining days looks bleak... but I'll stay vigilant. 🔭☄️
Needless to say that my forecast for the remaining days looks bleak... but I'll stay vigilant. 🔭☄️
Apparently 12P/Pons-Brooks is in significant outburst - up to magnitude 3.4.
April 4, 2024 at 7:44 PM
Guess what? I was lucky again. Conditions were quite bad but the comet was clearly brighter and more condensed. Made it 4.1 mag, corrected for differential extinction. This is at least 0.6 mag brighter than two evenings ago. #CometObs ☄️🔭
Give Taras a follow if you're interested in images of current comets!
☄️🔭 #CometObs
☄️🔭 #CometObs
Comet C/2022 E2 (ATLAS)
2025 Jan. 17.14 UT m1=13.3 (m2=15.0) Dia.=0.9' Tail=7.0' in PA 65 deg... [T24] 0.61-m f/6.5 astrograph + CCD... T. Prystavski (iTelescope observatory, U69 (Auberry, California, USA))
2025 Jan. 17.14 UT m1=13.3 (m2=15.0) Dia.=0.9' Tail=7.0' in PA 65 deg... [T24] 0.61-m f/6.5 astrograph + CCD... T. Prystavski (iTelescope observatory, U69 (Auberry, California, USA))
February 8, 2025 at 4:37 PM
Give Taras a follow if you're interested in images of current comets!
☄️🔭 #CometObs
☄️🔭 #CometObs
Looks like the Sahara dust-laden cirrostrati will spoil my planned #CometObs tonight. But 27° C for early April is probably another early sign of a hot year.
April 6, 2024 at 2:11 PM
Looks like the Sahara dust-laden cirrostrati will spoil my planned #CometObs tonight. But 27° C for early April is probably another early sign of a hot year.
Farewell ☄️12P/Pons-Brooks and 13P/Olbers. 12P close to the crescent moon and Jupiter at 8° height. I made it 4.0 mag in my 10x50's. 13P at 20° height was estimated at 9.4 mag with the 15-cm comet seeker. Unfortunately, not until their next time around. #CometObs 🔭
April 10, 2024 at 8:08 PM
Farewell ☄️12P/Pons-Brooks and 13P/Olbers. 12P close to the crescent moon and Jupiter at 8° height. I made it 4.0 mag in my 10x50's. 13P at 20° height was estimated at 9.4 mag with the 15-cm comet seeker. Unfortunately, not until their next time around. #CometObs 🔭
Visiting my mother at my old observing location in the Erzgebirge Mts. Obtained my 22nd visual #CometObs of ☄️ 12P/Pons-Brooks. 4.9 mag, short 0.5° tail and strongly condensed. There won't be many more chances to see the comet as its elongation continually decreases. 🔭
March 23, 2024 at 7:15 PM
Visiting my mother at my old observing location in the Erzgebirge Mts. Obtained my 22nd visual #CometObs of ☄️ 12P/Pons-Brooks. 4.9 mag, short 0.5° tail and strongly condensed. There won't be many more chances to see the comet as its elongation continually decreases. 🔭
#CometObs morning session.
62P/Tsuchinshan: 10.0 mag
C/2021 S3 (PANSTARRS): 9.9 mag
C/2023 A3 (Tsuchinshan-ATLAS): 12.3 mag
The latter two raise my total tally of visually observed comets to 179.
Hopes are on C/2023 A3 to become a naked eye ☄️ later this year. 🔭
62P/Tsuchinshan: 10.0 mag
C/2021 S3 (PANSTARRS): 9.9 mag
C/2023 A3 (Tsuchinshan-ATLAS): 12.3 mag
The latter two raise my total tally of visually observed comets to 179.
Hopes are on C/2023 A3 to become a naked eye ☄️ later this year. 🔭
March 8, 2024 at 5:17 AM
#CometObs morning session.
62P/Tsuchinshan: 10.0 mag
C/2021 S3 (PANSTARRS): 9.9 mag
C/2023 A3 (Tsuchinshan-ATLAS): 12.3 mag
The latter two raise my total tally of visually observed comets to 179.
Hopes are on C/2023 A3 to become a naked eye ☄️ later this year. 🔭
62P/Tsuchinshan: 10.0 mag
C/2021 S3 (PANSTARRS): 9.9 mag
C/2023 A3 (Tsuchinshan-ATLAS): 12.3 mag
The latter two raise my total tally of visually observed comets to 179.
Hopes are on C/2023 A3 to become a naked eye ☄️ later this year. 🔭
☄️🔭 #CometObs
Inner coma details
Comet 29P/Schwassmann-Wachmann
2025 Feb. 09.37 UT inner coma dia.=&1.1' outer coma dia.=&3.8' m1=11.0: (m2=14.3)... [T72] 0.51-m f/6.8 Corrected Dall-Kirkham + CCD... T. Prystavski... (iTelescope observatory, X07 (remotely from Rio Hurtado Valley, Chile))
Comet 29P/Schwassmann-Wachmann
2025 Feb. 09.37 UT inner coma dia.=&1.1' outer coma dia.=&3.8' m1=11.0: (m2=14.3)... [T72] 0.51-m f/6.8 Corrected Dall-Kirkham + CCD... T. Prystavski... (iTelescope observatory, X07 (remotely from Rio Hurtado Valley, Chile))
February 14, 2025 at 7:04 PM
☄️🔭 #CometObs
#CometObs
I will soon have to say farewell to my current evening ☄️. 12P/Pons-Brooks and 13P/Olbers move closer to the sun. 144P/Kushida is extremely diffuse & becomes harder to see.
12P: 4.9 mag, DC6/, 0.5° tail
13P: 10.7 mag, DC4
144P: 10.9 mag, DC1/
🔭
I will soon have to say farewell to my current evening ☄️. 12P/Pons-Brooks and 13P/Olbers move closer to the sun. 144P/Kushida is extremely diffuse & becomes harder to see.
12P: 4.9 mag, DC6/, 0.5° tail
13P: 10.7 mag, DC4
144P: 10.9 mag, DC1/
🔭
March 28, 2024 at 8:22 PM
#CometObs
I will soon have to say farewell to my current evening ☄️. 12P/Pons-Brooks and 13P/Olbers move closer to the sun. 144P/Kushida is extremely diffuse & becomes harder to see.
12P: 4.9 mag, DC6/, 0.5° tail
13P: 10.7 mag, DC4
144P: 10.9 mag, DC1/
🔭
I will soon have to say farewell to my current evening ☄️. 12P/Pons-Brooks and 13P/Olbers move closer to the sun. 144P/Kushida is extremely diffuse & becomes harder to see.
12P: 4.9 mag, DC6/, 0.5° tail
13P: 10.7 mag, DC4
144P: 10.9 mag, DC1/
🔭
2024 was a good year for the visual comet observer. I obtained 95 visual brightness estimates of 9 comets - my 6th best year since 1987. The total tally of estimates is now at 1896 estimates. However, if there will be no discoveries of brighter comets soon I won't reach 2000 in 2025.
#CometObs ☄️🔭
#CometObs ☄️🔭
January 2, 2025 at 12:47 PM
2024 was a good year for the visual comet observer. I obtained 95 visual brightness estimates of 9 comets - my 6th best year since 1987. The total tally of estimates is now at 1896 estimates. However, if there will be no discoveries of brighter comets soon I won't reach 2000 in 2025.
#CometObs ☄️🔭
#CometObs ☄️🔭
Slight cirrus towards 12P, but still good enough for visual #CometObs
12P/Pons-Brooks: 6.1 mag, 8', DC 6
144P/Kushida: 9.2 mag, 5.5', DC 2
Image taken with a fixed 50-mm EOS 600D. 20 x 3 sec, Processed with Siril (Linux). One can see the cirrus clouds but also the hint of the tail.
🔭☄️
12P/Pons-Brooks: 6.1 mag, 8', DC 6
144P/Kushida: 9.2 mag, 5.5', DC 2
Image taken with a fixed 50-mm EOS 600D. 20 x 3 sec, Processed with Siril (Linux). One can see the cirrus clouds but also the hint of the tail.
🔭☄️
March 3, 2024 at 7:40 PM
Slight cirrus towards 12P, but still good enough for visual #CometObs
12P/Pons-Brooks: 6.1 mag, 8', DC 6
144P/Kushida: 9.2 mag, 5.5', DC 2
Image taken with a fixed 50-mm EOS 600D. 20 x 3 sec, Processed with Siril (Linux). One can see the cirrus clouds but also the hint of the tail.
🔭☄️
12P/Pons-Brooks: 6.1 mag, 8', DC 6
144P/Kushida: 9.2 mag, 5.5', DC 2
Image taken with a fixed 50-mm EOS 600D. 20 x 3 sec, Processed with Siril (Linux). One can see the cirrus clouds but also the hint of the tail.
🔭☄️
Okay, I have to accept that the last possible observing chances of 2024 are spoiled by persistent fog. Too bad that the last clear evening was when we had the family dinner, but it was delicious and I don't regret it.
Without any surprises I stay five #CometObs shy of my goal of 100.
🔭☄️
Without any surprises I stay five #CometObs shy of my goal of 100.
🔭☄️
December 28, 2024 at 10:35 AM
Okay, I have to accept that the last possible observing chances of 2024 are spoiled by persistent fog. Too bad that the last clear evening was when we had the family dinner, but it was delicious and I don't regret it.
Without any surprises I stay five #CometObs shy of my goal of 100.
🔭☄️
Without any surprises I stay five #CometObs shy of my goal of 100.
🔭☄️
First visual #CometObs in 2025. Bad weather & no brighter comets in sight seems to prevent reaching my 2000th estimate this year... Currently only the "old faithful" 29P/Schwassmann-Wachmann is a target for me. Maybe again tomorrow.
Feb 16.82: 11.4 mag, 1.8', DC 2-3 (25-cm Dob@73x)
☄️🔭 #CometWatch
Feb 16.82: 11.4 mag, 1.8', DC 2-3 (25-cm Dob@73x)
☄️🔭 #CometWatch
February 16, 2025 at 8:19 PM
First visual #CometObs in 2025. Bad weather & no brighter comets in sight seems to prevent reaching my 2000th estimate this year... Currently only the "old faithful" 29P/Schwassmann-Wachmann is a target for me. Maybe again tomorrow.
Feb 16.82: 11.4 mag, 1.8', DC 2-3 (25-cm Dob@73x)
☄️🔭 #CometWatch
Feb 16.82: 11.4 mag, 1.8', DC 2-3 (25-cm Dob@73x)
☄️🔭 #CometWatch
Skies cleared unexpectedly this evening and I was able to obtain an estimate of comet C/2023 A3 (Tsuchinshan-ATLAS). 9.8 mag, 2.5' diameter and DC4. Comet is getting lower in the evening sky.
Still hoping to bag a few more estimates until the end of the year.
☄️🔭 #CometObs
Still hoping to bag a few more estimates until the end of the year.
☄️🔭 #CometObs
December 20, 2024 at 10:18 PM
Skies cleared unexpectedly this evening and I was able to obtain an estimate of comet C/2023 A3 (Tsuchinshan-ATLAS). 9.8 mag, 2.5' diameter and DC4. Comet is getting lower in the evening sky.
Still hoping to bag a few more estimates until the end of the year.
☄️🔭 #CometObs
Still hoping to bag a few more estimates until the end of the year.
☄️🔭 #CometObs