The Great Globular Cluster in Hercules (ヘラクレス座の大球状星団) Messier13

Since it is cloudy every day, I am adjusting the collimation of RC10, but I could not make the final adjustment with the stars after rough adjustment because there were no stars.
Last night I finally saw a star that didn't sway, so I was able to make the final adjustments, but when the remaining adjustments were around 20%, I really wanted to shoot, so I shot it to check the collimation.
I tried to suppress the light in the center as much as possible.


Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 59.0%)
Shot Date :22nd / Apr / 2022 03:26 (UTC+7) Start
TS RC10 Truss Prime Focus(250mm F/8 f/2000mm)
filter: SVbony RGB
Red: 33X60 secs 33 minutes
Green:33X60 secs 33 minutes
Blue: 32X60 secs 32 minutes
Total 1hours 37 minutes
Palette: RGB
Gain: 120 Offset 30,BIN2
CCD: ASI294mm Pro
Mount :iOptron CEM70G
Guide: SVbony 60mm F/4 f/240mm , QHY 290C
Controler:NINA,PHD2 Dithering 5pix, 2 frames each
Pre-Processing APP
Post-Processing PI,PS
Shot By Taro Seki