The Robin's Egg Nebula (NGC 1360) 

A planetary nebula in the constellation Fornax.
This nebula was discovered about 160 years ago, but it was only recently, in 2017, that it was recognized as a planetary nebula.
Apparently the reason it was recognized as a planetary nebula is because of its abundance of Oiii.
The Oiii signal is easy to collect, but the dark interior and Ha are quite faint and difficult to come out.
The nebula appears to be surrounded by Ha.
I'd like to clear up that aspect next time.
There's a lot of electronic noise and the stars are dirty. Maybe it's time to re-measure Dark and Bias...

ろ座にある惑星状星雲。
この星雲の発見は約160年前だが惑星状星雲だと認定されたのはつい最近の2017年の様だ。
惑星状星雲と認定された理由はOiiiが豊富だからだそうだ。
Oiiiのシグナルは簡単に収集できるが、内部の暗黒の部分とHaはなかなか淡くて出てこない。
星雲の周辺はHaで囲まれている様だ。
次回はその辺をクリアしたい。
なんか、やたら電子ノイズが多くて星も汚い。DarkとBiasを取り直す時期かな、、、

Place: Astropical@CSky Observatory Saraburi　Thailand (Bortle Class 3, Moon Phase 77.4%)
Shot Date:30th / Dec / 2025 22:27 (UTC+7)
TS TSRC10T Carbon Truss Prime Focus　(250mm F/8 f/2000mm)
Filter: Optolong Ha 3nm,Antlia V-Pro Lumi ,SVbony RGB set
L:12X180Secs Total 36 Minutes 
R:4X180Secs Total 12 Minutes 
G:4X180Secs Total 12 Minutes 
B:4X180Secs Total 12 Minutes 
Ha :24X300Secs Total 120minutes
Oiii :24X300Secs Total 120minutes
Total 5hour 12minutes

Palette: Target L-HaOiiiRGB(LRGB+Ha+Oiii)
Star LRGB
Gain: 200 , Offset 5
CCD: Player One Artemis-M Pro Bin2
Mount :iOptron CEM70G
De-Rotator : Wanderer Mini V2 (0 Deg)
Guide: SVBony 60mm F/4, QHY290C.
Controler: NINA
Pre-Processing APP Drizzle Droplet 0.9 Scale 1.0
Post-Processing PI,PS 
Shot By Taro Seki Astropical.uk

Robin_s_Egg_Nebula-NGC1360-RGB_1-crop-Edit01-Finish