The Center of Spider Nebula (スパイダー星雲の中心部) IC 417

A few years ago, I took several shots at angles that allowed me to see the entire spider, but I couldn't pick up any signal at all, and each time the target ended up in the trash. If you include the spider's legs, you'll need an angle of view about twice that of the moon.
Recently, many people have been photographing this OBJECT, and I thought it was unnecessary to take the entire image, so I photographed only the center part, which has the original IC 417 catalog number.
I took this photo because I wanted to see what the line extending from the center to the left looked like, but when I edited it with Close-Up, I realized that it was the edge of the nebula protruding from the north.
I guess the reason why the brightness of the stars is so high is because they are in the star forming area.


数年前からスパイダー全体が見れるような画角で何度か撮影してるが、まるっきりシグナルが拾えず毎回ゴミ箱行きのTargetだった。スパイダーの足まで含めると月の倍くらいの画角が必要になる。
最近このOBJECTを撮影している方が多く、全体像は撮らなくてもいいなと思い本来のIC 417のカタログ番号がついている中心部だけを撮影して見た。
ここを撮影したのは中心から左に伸びている線がどうなってるのか知りたかったからだが、Close-Upで編集してみると北からせり出している星雲のエッジの部分であることがわかった。
やたらに星の輝度が高いのは、Star formingエリアだからかな。


Place: Astropical@CSky Observatory (Bortle Class 3, Moon Phase 23.5%)
Shot Date:5th / Feb / 2024 20:36 (UTC+7)
TS TSRC10T Carbon Truss + Reducer x 0.67 (250mm F/5.3 f/1340mm)
Filter: Optolong Ha 3nm,SVbony LRGB sets
Ha: 12X 300Secs Total 60minute
L: 20X 180Secs Total 60minute
R: 7X 180Secs Total 21minute
G: 7X 180Secs Total 21minute
B: 7X 180Secs Total 21minute
Total 3 hours 1minute

Palette: Target  L-HaRGB
              Star  RGB
Gain: 200
CCD: ZWO ASI294mm Pro Bin2
Mount :iOptron CEM70G
De-Rotator : Wanderer Mini V2 (0 Deg)
Guide: iOptron iGuide in CEN70G, No Dec guide.
Controler: NINA Dither, PHD2
Pre-Processing APP Drizzle None
Post-Processing PI,PS
Shot By Taro Seki Astropical.uk

Spider-RGB_1-crop-Edit01-Finish