CRL2688（Egg nebula, PK 80-6.1）  12mag  24"×6"

2021.Jul.01. etc.  C14 35cmF11  Mono: ZWO ASI224MC 1sec*2569 + Player One Neptune-C II 2sec*298 (gray-scaled), R: Neptune-C II R60filter 2sec*319, GB: ZWO ASI294MM + Baader G,B filter 3sec*419, 420  total 105.3min