Horsehead

Object

Type                      Dark Nebula and Diffuse Nebula

Constellation            Orion

Distance                 1,500 light years

Magnitude               n/a

Size                       4 x 6 arc-min

Notes                     The Horsehead Nebula is a dark nebula (B33) obscuring the brighter diffuse nebula IC434. 

                             Also visible in this image is bright reflection nebula NGC 2023 (to the lower left of the Horsehead)

Image

Date                       2007-10-09

Place                      Okie-Tex Star Party

Exposure Data          HaLRGB  60:110:60:60:80 mins @ -15C

                             Ha 6x10, Clear 11x10, R 6x10, G 6x10, B 8x10

Notes                     Created pseudo luminance frame from Ha, Lum, R, G and B data

Equipment

Optics                    Takahashi TOA-150

Focal Length            1100 mm @f/7.33

Mount                     Takahashi NJP

Camera                   SBIG ST-10XME

Focuser                   Robo-Focus

Filters                     CFW-10, Astrodon HaRGB

Software                 CCDAutopilot, FocusMAX, TheSky6, CCDSoft, CCDStack, PhotoShop CS