Visibility II / V
The sky brightened up for a while on Christmas Day evening, and since eating ham was already getting dull, I included star photography in the program.
After initial difficulties, I aimed the tube at this small planetary nebula IC 5217 (PNG 100.6-05.4) found in the constellation Sisilisko. The object is only 7 arcseconds in size. The brightness is 11.3 mag, so the surface brightness is still good.
Due to its small size, it is very difficult to see any details. However, the more skilled ones in the world have also made the internal structure visible with a planetary camera and short exposures. I thought of trying the same thing the next evening, but the color camera didn't agree to cooperate. The slightly oval oval shape stands out.
I took the C14 through a series of 30 exposures of 3 min. An h-alpha filter was used to reduce light pollution.
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