This overview shows NCG7331 together with the famous Stephan's Quintett.
Image orientation: North is on the right side.
Telescope: Newtonian 250mm @ f/4.8 on Losmandy G11 mount.
Camera: MI G2-8300FR @ -25°C.
Exposure: LRGB: 36x120s + 23x240s + 11x300s / 7x180s + 2x300s / 9x180s + 5x300s / 6x180s + 5x300s. All 2x2 binned. Total exposure time: 6h35m.
Location: Rhein-Main area, Germany.
Note: Guided with Pentax 75SDHF and SBIG ST-7.
Processing: Pre-processing and colour calibration with THELI. Final processing with Pixinsight and Photoshop CS.
Publication: interstellarum 76 (7/2011).