The Golden Eye Cluster (ゴールデン・アイ・クラスター) Messier 67

An open cluster that is more colorful and beautiful than the Messier44 Praesepe.
But what is the red halo of this star?
Chromatic aberration of HyperStar? Overexposed?
Messier44 Praesepeに比べて色とりどりで綺麗な散開星団。

しかし、この星の赤いハローの原因はなんだろう?
HyperStarの色収差?露出オーバー?

Live Stack

Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 23.9%)
Date:17th / Apr / 2021 21:26(UTC+7) Start
Celestron Nexstar 6SE + Hyperstar C6 V4(150mm F/2.0 FL/300)mm
L-Pro 15 SubsX30sec 7.5minutes <<Live Stack>>
Total 7.5 minutes 
OSC:RGB
Gain:120
CCD: ZWO ASI294MC Pro
Filter: Optolong L-Pro
Mount :Celestron AVX
Guide: SVBony 30mm F/4, ZWO ASI120MC-S
Controler: ASIAIR-Pro Dither
Pre-Processing ASIAIR-Pro
Post-Processing PI,PS
Shot By Taro Seki Astropical.uk

Stack15_Light_M67_30_0s_Bin1_ABE_ABE-PI-Edit01-Finish