A surprisingly dynamic region in Cepheus, the Cave nebula and surroundings. This image was taken during 4 nights with the little 76mm refractor at F4,5, with the ASI2600MC camera and an IR/UV cutoff filter. Total imaging time almost 18 hours, in subs of two minutes.
Image with the ASI2600MC camera, cooled to -10°C, and the SharpStar 76EDPH at F 4.5, IDAS D1 LPS filter, 138x300s or 690 minutes of data at Gain 100. (Click on the image to enlarge)