Sh2-171, part of the larger NGC 7822 complex, is a bright emission nebula located in the constellation Cepheus, approximately 3,000 light-years away. This active star-forming region is home to massive, young stars that carve the surrounding gas into intricate shapes through intense ultraviolet radiation and stellar winds. At the heart of NGC 7822 lies the star cluster Berkeley 59, containing some of the hottest known stars in our galaxy, including O-type stars that emit powerful radiation, shaping the surrounding nebula.

This deep image captures the complex interplay of ionized hydrogen (Hα) and sculpted dust pillars, remnants of ongoing star formation. The nebula’s intricate filaments and dark globules represent dense regions where new stars are still forming. Sh2-171 provides an excellent laboratory for studying the effects of massive stars on their environments, as their radiation and winds disperse surrounding material, influencing the next generation of stellar birth.

Image Description and Details : Equipment: ZWO ASI 1600mm, Samyang 135mm @f4, EQ6-r equatorial mount, Svbony 50mm guide scope, ZWO ASI 224mc guide camera, ZWO 8 position EFW, Canon to EOS lens adaptor, Baader 1.25" narrowband filters.

Integration:
HA: 60x 600 @ gain 139, temp -20
Sii: 12x 600 @ gain 139, temp -20
Oiii: 15x 600 @ gain 139, temp -20

Taken over multiple night from my Bortle 5 backgarden in Littlehampton, west Sussex. 21st – 26th October’21.

Copyright: carl gough

Image Description and Details : NGC 7822 is a Nebula located approximately 3000 light years away in the constellation Cepheus, its size is approximately 10 light years The region includes an object from the Sharpless catalog Sh2-171 and the young star cluster Berkley59.

captured in my backyard
Newton 250/1000
Ioptron cem70
zwo294mm-pro
Antlia Filters
Integration 27h16
Ha 191x240"
OIII 106x240"
SII 112x240"

Copyright: Anthony Husson