"In 1787, astronomer William Herschel discovered this unusual planetary nebula: NGC 2392. More recently, the Hubble Space Telescope imaged the nebula in visible light, while the nebula was also imaged in X-rays by the Chandra X-ray Observatory. The featured combined visible-X ray image, shows X-rays emitted by central hot gas in pink. The nebula displays gas clouds so complex they are not fully understood. NGC 2392 is a double-shelled planetary nebula, with the more distant gas having composed the outer layers of a Sun-like star only 10,000 years ago. The outer shell contains unusual light-year long orange filaments. The inner filaments visible are being ejected by strong wind of particles from the central star. The NGC 2392 Nebula spans about 1/3 of a light year and lies in our Milky Way Galaxy, about 3,000 light years distant, toward the constellation of the Twins (Gemini)."
https://science.nasa.gov/ngc-2392-double-shelled-planetary-nebula"This is an intricate structure of shells and streamers of gas which surround a dying, Sun-like star over 5000 light-years away from Earth.
The disc of material is embellished with a ring of comet-shaped objects, their tails streaming away from the central dying star. The planetary nebula began to form about 10 000 years ago, when the star started to expel an intense, high-speed 'wind' of material out into space."
https://www.esa.int/Science_Exploration/Space_Science/The_Eskimo_Nebula_NGC_2392------------------------------------------------------
Doing a review of the old made project folders, it turned out that I found this unmade project described as NGC 3242 Ghost of Jupiter and since it was only one session and short, I decided to process it quickly.
Once done, I went to look for more information about the tiny blue bubble lost in the immensity of a sky full of stars. But something was wrong as the stars I saw around the Ghos of Jupiter were not the same as I saw in my image.
So I decided to do a search with the sample image on AstrometryNet to discover the misidentification placed and that it was this other Planetary Nebula, NGC 2392.
Given the first result obtained, I decided to make a new stack in 2 drizzle and 3 drizzle. Directly opt to work with the 3 drizzle stack at once. That also mean doing each step of the workflow in a new saved image...each layer was 1.5 Gb.
I decided not to do a crop of the fullframe image because amazingly that Dec 2019 sessions, like the others that were done during that same inaugural week of PH2 guiature, produced a gorgeous star shot in almost every corner of the image except one.
When I showed it to my brother, he also understood that surely after those sessions there was a mismatch in the focuser or in other mechanical parts of the Newton that have not been able to be identified and properly resolved/fixed until now.
The result of the 3drizzle compared to the initial stack gave more details inside the nebula. The starless nebula layer final image processed was combined with the base stars normal billinear. Also a 3 drizzle base star was included.
The result is poor on regard this little and fascinating planetary nebula but we are happy at least to have managed to observe some central and peripheral structures that characterize it.
We hope to be able to do sessions again on it with the Newton 300-1200mm f4 that we have parked for more than a year and that we have not yet been able to inaugurate its use.
We thank everyone for visiting us to see our work.
Processed June 2022
https://twitter.com/AstroOtus/status/1543898102238699521
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