NGC 3372, 55 minutes of integration in SHORGB with Ritchey-Chrétien telescope – Closed Carbon Tube 320/2885 F/9, Apogee Alta U16 CCD camera, 27 shots of which with Ha filter 3×120 seconds, with Oiii filter 3×120 seconds, with Sii filter 3×120 seconds, with Red filter 6×120 seconds, with Green filter 6×1200 seconds and with Blue filter 6×120 seconds, processing with Pixinsight and Photoshop
by Confident_Lock7758