Frank AdlerThe Question Mark Nebula
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2,600 light-years away in Cepheus, a cosmic question mark is being written in gas and dust. Sharpless 171 (NGC 7822) is an active stellar nursery spanning over 100 light-years, powered by Berkeley 59 — a star cluster just two million years old. Its brightest member, BD+66 1673, burns at nearly 45,000 Kelvin, sculpting the surrounding cloud into the elephant trunks and dark pillars you see here. A two-million-year-old star carving a hundred-light-year nebula. The universe doesn't do things small.
The foreground scatter of stars in the upper part of the frame belongs to NGC 7762 — an unrelated open cluster that is 2.5 billion years old and just happens to share the same patch of sky. Ancient stars looking on as new ones are born.
Two-panel mosaic captured over two nights from Chemnitz, processed in Hubble Palette (HSO). 🔭
Scope: Askar 103APO
Lens: Askar 0.6x Reducer
Camera: ZWO ASI 294MC Pro
Filter: Antlia Tri-Band RGB Ultra
Mount: SkyWatcher AZ-EQ5-GT
Guiding: SkyWatcher Evoguide 50ED with ZWO ASI 224MC
Controller: ZWO ASIAir Pro
Focusser: ZWO EAF
Integration time: 16hrs 50min
Full version and print available at:
https://adfr.io/astro/20260310_sh2-171
#astrophotography #deepskyobject #narrowband #hubblepalette #emissionnebula #sh2171 #ngc7822 #questionmarknebula #cepheus #starforming #stellarnursery #berkeleycluster #hso #pixinsight #astronomyphotography #spacephotography #nightsky #cosmiclandscape #astrophoto #nebula #Sternenfotografie #Astrofotografie #deepsky #mosaic #longexposure #fromchemnitz
====================
2,600 light-years away in Cepheus, a cosmic question mark is being written in gas and dust. Sharpless 171 (NGC 7822) is an active stellar nursery spanning over 100 light-years, powered by Berkeley 59 — a star cluster just two million years old. Its brightest member, BD+66 1673, burns at nearly 45,000 Kelvin, sculpting the surrounding cloud into the elephant trunks and dark pillars you see here. A two-million-year-old star carving a hundred-light-year nebula. The universe doesn't do things small.
The foreground scatter of stars in the upper part of the frame belongs to NGC 7762 — an unrelated open cluster that is 2.5 billion years old and just happens to share the same patch of sky. Ancient stars looking on as new ones are born.
Two-panel mosaic captured over two nights from Chemnitz, processed in Hubble Palette (HSO). 🔭
Scope: Askar 103APO
Lens: Askar 0.6x Reducer
Camera: ZWO ASI 294MC Pro
Filter: Antlia Tri-Band RGB Ultra
Mount: SkyWatcher AZ-EQ5-GT
Guiding: SkyWatcher Evoguide 50ED with ZWO ASI 224MC
Controller: ZWO ASIAir Pro
Focusser: ZWO EAF
Integration time: 16hrs 50min
Full version and print available at:
https://adfr.io/astro/20260310_sh2-171
#astrophotography #deepskyobject #narrowband #hubblepalette #emissionnebula #sh2171 #ngc7822 #questionmarknebula #cepheus #starforming #stellarnursery #berkeleycluster #hso #pixinsight #astronomyphotography #spacephotography #nightsky #cosmiclandscape #astrophoto #nebula #Sternenfotografie #Astrofotografie #deepsky #mosaic #longexposure #fromchemnitz
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