IC-5146 Cocoon Nebula : ~3,600 Light-years from Home - apparent size : 12' - Pentax Q10 + SkyGlow Filter + SkyWatcher 200/1000 Newton prime focus = 56 exposures of 30 seconds @ ISO 1600 ! For that reach : Celestron C14 or Pentax Q ? ( Shot at sea level in a big city = lots of light-pollution & turbulence )