C / 2021 A1 Leonard 2121-12-03 (JST) 45cm F / 4 Newtonian 2×2 Binning ASI071MA Pro There was a cloud coming, but the moonlight disappeared and the comet became easier to watch. Today we can see the fine structure of the tail. A total of 60 frames( 30-second exposures )the stellar lines are unsightly because of the time lag.
C / 2021 A1 Leonard 2121-12-02 (JST) 45cm F / 4 Newtonian 2×2 Binning ASI071MC Pro The influence of the moonlight has almost disappeared, and I could see the comet’s tail with 5 cm 7x binoculars, but it was faint!
2021-11-29 Mini astronomical observation party It is an annual astronomical observation party. I changed it the day before due to bad weather forecast on the 30th, so the number of participants decreased, but I managed to enjoy the stars with 45 cm newtonian. The Orion Nebula was beautiful, but the M1 (Crab Nebula) felt faint. Also, because seeing was good, I could watched Sirius’s companion star (Sirius well for the first time this season, but it was a celestial body that was difficult for those who saw it for the first time. Thank you for your hard work! !!
C / 2021 A1 Leonard 2121-11-30 04:34 (JST) 45cm F / 4 Newton Newtonian 2×2 Binning 1m x 8 frame ASI071MC Pro LPR-N The comet’s head is bright but its tail is pale!
C / 2021 A1 Leonard 2121-11-29 04:58 (JST) 45cm F / 4 Newtonian 2ｘ2binning 1m x 5 frames The moonlight is reduced, the comet is brighter, and the tail is clearly visible.
Perseus galaxy 2021-11-27 45cm reflection 1mx30 frame ASI0871MC Pro Monochrome color image. Abell426 A large group of more than 1000 galaxies called the Perseus cluster of galaxies
C / 2021 A1 Leonard 2121-11-28 04:24 (JST) 45cm F / 4 Newtonian Field / 40′ x 25 ′ 30s x 10 frames The image is worse than yesterday, probably because of the nearby crescent moon, moonlight, and bad air. You can see a little fine structure of the comet’s tail
C / 2021 A1 Leonard 2121-11-27 04:30 (JST) 45cm F / 4 Newton newtonian Field / 0.5 ° 30s x 20 frames The tail of the comet has become clear.
C / 2021 A1 Leonard 2121-11-26 45cm F/4 newtonian 30s x 20 frames There was moonlight, but the transparency was good, the comet head was green, and I am looking forward to the future.
