I had a strong impression of Oiii's blue-colored Target on a black background, but when I treated Ha seriously this time, it was completely different.

The background depends on the Ha nebula, and it seems that Dolphin itself and the head part have Ha filaments.

The stars around my ears and the red reflection nebula are cute like flower decorations

黒い背景にOiiiの青一色のTargetの印象が強かったが、今回Haを真面目に処理したら、全然違っていた。

背景はHaの星雲が漂っていて、Dolphin自体も頭の部分はHaのフィラメントもあるようだ。

耳元の星と赤い反射星雲は花飾りのようでかわいいな。

Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 40.8％)

Shot Date :26th / Jan / 2022 23:33　(UTC+7) Start

Celestron C11+Hyperstar V4 (280mm F/1.9 f/540mm)

filter: Baader Highspeed ultra narrow band Ha,Oiii filters

Ha(3.5nm) 16X180 secs 48 minutes

Oiii(4nm) 16X180 secs 48 minutes

Total 1 hour 36minutes

Palette: HOO

Gain: 120, Offset 30,BIN2

CCD: ASI294MM Pro

Mount :iOptlon CEM70G

Guide: SVbony 60mm F/4 f/240mm , QHY 290C

Controler:NINA,PHD2

Pre-Processing APP

Post-Processing PI,PS

Shot By Taro Seki Astropical.uk