Horse Head Nebula (馬頭星雲) LDN1730

Append Sii Signal
Astropal's Djalil advised me last time, "If you add Sii Siganal, the contrast will increase and the details of the horse head will become clearer."
There was a Clear Sky for about an hour today, so I shot Sii and tried again from Stack.
Certainly, as Djalil advised, the contrast of the horse head has increased and it has become three-dimensional.
Thank you, Djalil.

Astropalの Djalilさんが「Siiを追加すればもっとコントラストが上がり、馬頭の詳細がはっきりしてくるよ。」と前回アドバイスをくれた。

Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 3.7%)
Shot Date :4th / Mar / 2022 20:45 (UTC+7) Start
20th / Mar / 2022 19:35 (UTC +7)
TS RC10 Truss Prime Focus(250mm F/8 f/2000mm)
filter: Optlong 3nm HSO
Ha:20X180 secs 60 minutes
Oiii:20X180 secs 60 minutes
Sii:20X180 secs 60 minutes
Total 3 Hours
Palette: HaSii-SHO (False)
Gain: 120, Offset 30,BIN2
Mount :iOptron CEM70G
Guide: SVbony 60mm F/4 f/240mm , QHY 290C
Controler:NINA,PHD2 Dithering 5pix, 2 frames each
Pre-Processing APP
Post-Processing PI,PS
Shot By Taro Seki