NGC 7129 is a star-forming region in Cepheus, about 3,300 light-years away, where reflection nebulae, ionized gas, and dark dust coexist in a dynamic environment.
Just below lies the older open cluster NGC 7142, which intriguingly hosts more blue stars than expected for its age. These are likely “blue stragglers” — stars that have gained mass through binary interaction or stellar mergers, appearing younger than the rest of the cluster.
On the left side of the image, Hα and OIII structures form curved ionization fronts, shaped by the influence of the region’s young stars.
This image is the result of 72 hours of data collected in September and October 2025 from the Curiosity Observatory I run from Àger, Catalonia, under Bortle 3 skies.
Mount: ZWO AM5
Camera: ASI 2600MM Pro
Scope: TS Optics 94 EDPH f4,4
Hub: Pegasus Powerbox v3
Rotator: ASI CAA
EFW: ZWO 7x36mm
Focuser and Flat Panel: RBFocus
Filters: LRGB Baader + Ha and OIII Antlia EDGE