Sharpless 155, the Cave Nebula

This is one of the targets I’ve been imaging for decades using various equipment—from camera lenses (150–300mm) to large reflecting telescopes ranging from 11" to 14". (My older photos can be seen at end of this blog post) This time, I used new imaging setup to capture a high-resolution image of Sh2-155. The seeing conditions weren’t ideal, but I’m fairly happy with the results. Sharpless 155…