The central area of the large nebula NGC 7822 + Tommaso Massimo Stella + SHO 7/6.5nm

The central area of the large nebula NGC 7822

Credit: Tommaso Massimo Stella

Filters: Optolong SHO 7/6.5nm narrowband filters

 

 

 

This photo, taken during the fourth Southern Italy Star Party, captures the central area of the large nebula NGC 7822 (also called Question Mark or Teddy Bear), located in the constellation Cepheus and 2,900 light-years from our solar system.
At the top right, we can see the young star cluster Berkeley 59.
For the colors, I used the well-known "Hubble" palette, which associates ionized sulfur with the red channel, ionized hydrogen with the green channel, and doubly ionized oxygen with the blue channel. The stars appear magenta as a natural result of this combination and were not processed separately.

 

 

Technical data
Date & Site: 2025/09/18-19-20, Stigliano (MT)-Italy, SQM 21.15
Lights: 79x300s (Optolong Ha-7nm)+84x300s (Optolong OIII-6.5nm)+84x300s (Optolong SII-6.5nm)
Setup: Omegon PRO CC 200@1870mm, Skywatcher AZEQ6 GT, Giordano/Touptek IMX571M

Hope you like it.