The Mystic Mountain Nebula in Eta Carinae Nebula

A portion of the Eta Carinae Nebula in the constellation Carina.

An object famous for its image in Hubble.
A nebula I've wanted to photograph since I started astrophotography.
The other day, I realized that even at a low position in the south from the observatory, it was visible for about 90 minutes if it was in the southwest, so I tried photographing it.
However, part of it is still obscured by the observatory wall, so the shape of the stars is slightly distorted, and the atmospheric effects are severe, resulting in a lot of blur.
Although blurry, the shape seemed somewhat discernible, so I collected signals little by little over several days.
I was able to pinpoint the location of this target when I previously photographed the entire Eta-Carinae Nebula from behind my house with a 300mm focal length.
Ha and Oiii filters alone are not nearly enough to generate sufficient signal; it seems that filters such as Nitrogen are also necessary.
It's an ugly image, but I'm keeping it as a memento.（Drizzle X2.0 Re-Sampling X2　Total X4 Stretch)

りゅうこつ座のエータ・カリーナ星雲の一部

Hubbleの画像で有名なObject。

天体撮影を始めた頃から撮影したかった星雲。

先日観測所から南の低い位置でも南西であれば90分くらいなんとか見えることに気づき、撮影してみた。

とはいえ一部はやっぱ観測所の壁に被ってるようで星の形も少し崩れてるし、そもそも大気の影響が酷くボケ感も酷い。

ボケてはいるがその形はなんとか出てきそうだったので少しづつ連日シグナルを集めてみた。

以前家の裏から焦点距離300mmでEta-Carinae星雲の全体を撮影したときに、このターゲットの場所を特定できた。

Ha とOiiiフィルターだけでは全然Signalが足りなくSiiはもちろんNitrogen等のフィルターも必要なようだ。

醜い画像であるが、記念として。（Drizzle X2.0 Re-Sampling X2　Total X4 Stretch)

Place: Astropical@CSky Observatory Saraburi　Thailand (Bortle Class 3, Moon Phase 67.9%)