M57 – The Ring Nebula

by Spatza

2 Comments

  1. First attempt at a planetary nebula, shot from my apartment balcony under a full moon in suburban Dublin.

    M57 Ring Nebula 1st April 2026, Dublin, Ireland (Bortle 7) SkyWatcher StarTravel 102, ZWO ASI662MC, HEQ5 Pro UV/IR Cut Filter

    Guiding – ZWO ASI120MM Mini + SVBONY SV165 30mm guidescope

    Exposure: 186 x 25s (1h 17min total integration) Gain: 100 Calibration: 31 darks, no flats

    Processing: Siril + GIMP

    Siril – stack, background extraction, plate solve, PCC, stretch, SCNR)
    GIMP – curves, unsharp mask, corrected a couple of stars for artefacts using layers.