Small Cluster Nebula (NGC7129,NGC7133)
An open star cluster in the constellation Cephaus and a reflection nebula that spreads out as if enveloping its stars.
It's apparently also called a rosebud, but personally I don't really evoke that image.
I love all the beautiful nebulae and the open star clusters that formed from them, including the most well-known Subaru.
Addendum: I received the catalog number of the open cluster from Mr. Waki in Japan, so I added it here.
Open cluster NGC7133
ケファウス座にある散開星団とその星達を包むように広がる反射星雲。
バラの蕾とも呼ばれているようだが、私的にはそのイメージはあまり感じない。
最もメジャーなスバルをはじめ、星雲とその星雲が元になってできた星達の散開星団はどれも美しくて好きだ。
今回この星雲を撮影するのは初めてだが、星雲はもっと広がりがあるようだ。
追記：日本の和氣さんから、散開星団のカタログ番号を教えていただいたので追記。
散開星団 NGC7133
Place: Astropical@CSky Observatory Saraburi Thailand (Bortle Class 3, Moon Phase 0.1%)
Shot Date:22nd / Oct / 2025 21:33 (UTC+7)
TS TSRC10T Carbon Truss Prime Focus (250mm F/8 f/2000mm)
Filter: Aantria V-Pro Lumi, Optolong Ha 3nm,,SVbony RGB set
L 21X180Secs Total 63minutes
R: 10X 180Secs Total 30minutes
G: 10X 180Secs Total 30minutes
B: 10X 180Secs Total 30minutes
Ha: 6X300Secs Total 30minutes
Total 3hours 33minutes
Palette: Target LHaRGB
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 None
Post-Processing PI,PS
Shot By Taro Seki Astropical.uk
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