The Heart of Space IC 1805 (7 hours)

Heart of Space IC 1805 Continued gathering data, got a 4-hour window of clear weather, went out to shoot immediately—another sleepless night. October 21, 2022, 23:00–3:00, -3°C, 3 hours 8 minutes October 26, 2022, 22:00–3:00, -8°C, 4 hours TS 152/450 F2.9 (Starizona 0.75x), ZWO 533MC, L-eXtreme, EQ6, 8x50 + QHY5L2M guider. Guiding with PHD2, shooting with APT. 107×240 sec, gain 105, offset 10, -10°C. 50 darks, 50 flats, 50 dark flats. No Photoshop, just stacking, brightness, and white balance adjustments. Slight drift in each frame. Yellow zone light pollution, 14 km from the city of Kazan (population over 1 million). Total integration: 7 hours 8 minutes.