NGC7293 Helix (Ha + OIII)

Aug 27th, 2025

5 h 0 m

Switched from LRGB to the Ha+OIII option. It works great for this nebula. There are still about six or seven hours left to accumulate (hopefully in September). The detail may not be as good, in this camera mode the pixel size is 4.63 µm, but on the plus side there is increased light gathering and correspondingly faster signal accumulation.

Aug 21st, 2025

2 h 30 m

One of the closest planetary nebulae. It is located at a distance of only 650 light-years. The diameter is about 2.5 light-years. The angular size is 12'x25'. It is difficult to observe at mid-latitudes of Russia. Lum clearly needs to be replaced with Ha, I will reshoot and replace it! And I will definitely add more material. The object deserves it.