The Sliced Onion Galaxy (スライス・オニオン銀河) NGC3344

I changed Gear to a long focus and waited for the galaxy season, but there were days when I could not even see the moon due to the clouds and rain every day.
It was clear sky today, so I finally got a picture of the galaxy.
It probably has this name because it resembles the cut end of a sliced onion.
I tried this Target many times and finally caught it for the first time today.
There is a dark arm in the part of the disc and I'm not sure if it's a disc or noise, but when compared with other photos, it looks like a disc rather than noise.
This galaxy is something difficult.

Gearを長焦点に変えて銀河シーズンを待ち受けているが、連日の雲+雨で月すらも見えない日が続いた。
今日はなんとか晴れたので、やっと銀河が撮れた。
輪切りの玉ねぎの切り口に似ているのでこの名前がついているのであろう。
このTargetも何回もTryしてやっと今日初めて捕まえられた。
ディスクの部分に濃い腕がありディスクなんだかノイスなんだかよくわからないが、他の写真と見比べるとノイズではなくディスクのようだ。
この銀河はなんか難しいな。

Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 42.0%)
Shot Date :25th / Mar / 2022 22:59 (UTC+7) Start
TS RC10 Truss Prime Focus(250mm F/8 f/2000mm)
filter: SVbony LRGB,Optloong Ha 3nm
Lum: 20X180 secs 60 minutes
Red: 8X180 secs 24 minutes
Green: 8X180 secs 24 minutes
Blue: 8X180 secs 24 minutes
Ha: 8X180 secs 24 minutes
Total 2hours36 minutes
Palette: L-HaRGB
Gain: 120 Offset 30,BIN2
CCD: ASI294mm Pro
Mount :iOptron CEM70G
Guide: SVbony 60mm F/4 f/240mm , QHY 290C
Controler:NINA,PHD2 Dithering 5pix, 2 frames each
Pre-Processing APP (Drizzle X2.0)
Post-Processing PI,PS
Shot By Taro Seki Astropical.uk

SliceOnion-LHaRGB2-BGE-Edit01-Finish