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M81 & M82 -- GALAXIES

Object

Type                      M81-Spiral Galaxy, M82-Irregular Galaxy

Constellation            Ursa Major

Distance                 12 Million light years

Magnitude               M81-6.9, M82-8.4

Size                       M81-21x10 arc-min, M82-9x4 arc-min

Image

Date                       2006-04-09, 04-20, 4-22

Place                      Bixhoma Observatory (H33)

Exposure Data          LRGB  120:60:60:60 mins @ -15C

                             Lum 24x5, R 12x5, G 12x5, B 12x5

Notes                     Reprocessed using CCDStack

Equipment

Optics                    Takahashi FSQ-106

Focal Length            530 mm @f/5

Mount                     Takahashi NJP

Camera                   SBIG ST-10XME

Focuser                  Robo-Focus

Filters                     CFW-10, Astrodon LRGB

Software                 TheSky6, CCDSoft, CCDStack, PhotoShop CS