NGC 3239 (Arp 263), irregular galaxy, type IBm/P, in Leo. . Taken March 5, 6, 8, and March 15,
2008 with a DSI Pro II and Outback Cooler on a C8NGT, and an ASGT mount. The L sugbrames were
4 minutes at f7 (1400 mm) while the RGB subframes were 3 minutes at f5 (1000mm). The total exposures
in L:R:G:B (min) = 260:69:75:69. Color balance was achieved via numerically scaled channels.
Captured with Envisage, calibrated and sigma combined in Iris with other processing using FITZ,
PixInsight LE and Photoshop CS. North is up.