The Spring Southern Pinwheel Galaxy (春の南の大回転花火銀河) Messier 83
Yesterday's Splinter Galaxy NGC number was confusing, but this Southern Pinwheel Galaxy was also a mess for me.
Looking at the Stellarium, I see the Southern Pinwheel Galaxy all year round. I didn't care about it before, but when I checked it a few days ago, I found that I could see M83 (NGC5236) now and C70 (NGC300) in autumn. Just like the relationship between Orion and the scorpion, if you can see one, you can't see either.
That's why I added Spring to the title to make a distinction.
Two small galaxies in the east are cute like UFOs.
This is my first LHaRGB photo.
Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 59.4%)
Date:1st / Jun / 2021 23:37(UTC+7) Start
TS TSRC10T Carbon Truss Prime focus (250mm F/8 f/2000mm)
L: 16 X 120Secs Total 32minutes
R: 10 X 120Secs Total 20minutes
G: 10 X 120Secs Total 20minutes
B: 9 X 120Secs Total 18minutes
Ha: 10 X 120Secs Total 20minutes
2nd pic::Oiii 12 X 120Secs Total 24minutes
Total 1Hour 50minutes,2Hours 14Minutes
MonoBin: LRGB BIN2
Gain:All Filter 120
CCD: ZWO ASI294MC Pro
Filter: SVbony LRGB filter set. Svbony Ha 7nm
Mount :iOptron CEM70G
Guide: SVBony 30mm F/4, ZWO ASI120MC-S
Controler: ASIAIR-Pro Dither