Object Data

Catalog            :    Abell 21

Type                :    Planetary Nebula

Size                 :    12´

Mag                 :    7,98m

Constellation   :    Gemini

Distance          :    1500 ly

Exposure Data

Date                    :    2007-03-12 UT 20:07

Location              :    Latidude 52°54´25“ Longitude 8°44´ 24“

Telescope           :    SuperApo 130 Astreya f/7 with Televue Reducer x0.8

Mount                  :    CGE Celestron

Camera               :    ST2000XM

Binning                :    L+Ha:1x G+B:2x

Exposuretime      :    L:2x600sec; Ha:4x600sec;G;B:2x480sec

Prossesing          :    MaxIm DL; Adobe Photoshop