NGC 7094 and the Rarely Imaged “Shenron Nebula” [O III]

Image Title: NGC 7094 and the Rarely Imaged ‘Shenron Nebula’ [OIII] Arc

Copyright: Stefan Pommerin

Date image was taken: August 06, 2025

Location: StarFront Remote Observatories, Texas, USA.

Data Acquisition Method: Personal Telescope Setup

Description and Details: Sweeping above the planetary nebula NGC 7094 in Pegasus is a broad, ghostly arc of [OIII] - A rare and enigmatic structure nicknamed the 'Shenron Nebula'.

First noticed in a wide-field discovery image by Yann Sainty and Marcel Drechsler , the arc’s origin remains unknown.

The [OIII] feature doesn’t match the usual halo of a planetary nebula, nor does it fit neatly into the shell of a known supernova remnant.
Whatever its story, to my knowledge, only one image had captured it before - the discovery itself.

This image combines broadband LRGB with narrowband H-Alpha and OIII filters, capturing not only NGC 7094 and the [Oiii] arc, but also the surrounding integrated flux nebula (IFN) - vast clouds of interstellar dust floating high above the Milky Way’s plane, illuminated only by the faint, combined glow of billions of distant stars.

Total integration: 65h 40m
Lum: 8h 55m (107 × 300")
R: 4h (48 × 300")
G: 4h (48 × 300")
B: 4h (48 × 300")
Hα: 20h 30m (246 × 300")
OIII: 24h 15m (291 × 300")

Equipment:
Telescope: Askar 107PHQ
Camera: ZWO ASI2600MM Pro
Mount: ZWO AM5N

Name: Stefan Pommerin

Website or Facebook Profile: https://app.astrobin.com/u/ShotsByStefan