(Full Res in RASC Zenfolio, or full res mouseover in Astrobin) (Full Res in RASC Zenfolio, or full res mouseover in Astrobin) SH2-155 or Caldwell 9: The Cave Nebula in Cepheus Askar 151phq; AP Mach2 GTO; ASI6200MM, – Chroma Broadband
The Cave Nebula and Hydrogen’s Journey
