NamesQuestion Mark Nebula, NGC 7822, Sh2-171
TypeStar forming region
ConstellationCepheus
Distance≈ 3,000 ly
Size22.8′
RA00h 01m 08.6s
Dec+67° 25′ 17″

NGC 7822, also known as the Question Mark Nebula, is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59.1

Question Mark Nebula

Photo Details

TelescopeSeestar S30 Pro (160 mm f/5.3)
Dates2026-09-05, 2026-09-09
Integration time8h 21m
FiltersUV/IR cut (OSC, stars): 3h 55m, LP filter (HOO): 4h 26m
ProcessingStars from the OSC data. HOO from the Seestar LP filter (red from Hα, green and blue from OIII), treated as 20 nm Hα and 30 nm OIII narrowband

Footnotes

  1. Wikipedia - NGC 7822 ↩