NGC 6888 -- CRESCENT NEBULA

Object

Type                      Emission Nebula

Constellation            Cygnus

Distance                 5000 light years

Magnitude               7.4

Size                       20x10 arc-min

Image

Date                       2008-08-03

Place                      RMCC Observatory (Mounds)

Exposure Data          LHaRGB  80:60:40:40:60 mins @ -5C

                             Lum 16x5, Ha 6x10, R 8x5, G 8x5, B 12x5

Notes                     RGB binned 2x2

Equipment

Optics                    Takahashi TOA-150

Focal Length            1100 mm @f/7.3

Mount                     Paramount ME

Camera                   SBIG ST-10XME

Focuser                  Robo-Focus

Filters                     CFW-10, Astrodon HaRGB

Software                 CCDAutopilot, FocusMAX, TheSky6, CCDSoft, PhotoShop CS