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