The Whirlpool Galaxy (子持ち銀河)Messier 51

I added a new 2-hour data shot under the worst sky conditions to the 2-hour data shot under the best sky conditions last year to create a 4-hour integration.
This time, I tried processing with SPCC's blue and red  colors.


Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 96.4%)
Shot Date 7th / May / 2023 23:19 (UTC+7)
TS RC10 Truss  (250mm,F/8.0,f/2000mm)
filter: SVbony LRGB Filter set and Optolong 3nm Ha filter
New Signal
L: 15X120secs 30minutes
R: 15X120secs 30minutes
G: 15X120secs 30minutes
B: 15X120secs 30minutes
Ha: 15X120secs 30minutes

Total New 2 hours + Last yera's signal 2 hours= 4 hours

Palette: Target :L-HaRGB
              Star : RGB
Gain: 200 BIN2 Mono
Mount :iOptron CEM70G
Guide: SVBony 60mm F/4, QHY290C (Dithering every 5 shots)
Pre-Processing APP  Drizlle None
Post-Processing PI,PS 
Shot By Taro Seki