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Observer: Gianluca Masi
Location: Ceccano, Italy
Date: April 17, 1997 19:19-20:10 UT
The first image is a four-frame mosaic, each frame 1 min. exposure. Log-scaled. Technical informations on the same picture. Vixen SP R-150S, 15 cm f/5 reflector telescope; CCD SBIG ST-7.
The second image shows the inner region around the nucleus, with dust waves. Technical informations on the same picture. Vixen SP R-150S, 15 cm f/5 reflector telescope; CCD SBIG ST-7; elaboration: QMiPS32.
The last image uses the Larson-Sekanina algorithm to extract hidden features. Note the region aroun the nucleus. Technical informations on the same picture. Vixen SP R-150S, 15 cm f/5 reflector telescope; CCD SBIG ST-7; elaboration: QMiPS32.
Location: Ceccano (FR) Italy, 213 meters above sea level.
Gianluca Masi
gianmasi@fr.flashnet.it
http://www.flashnet.it/users/gianmasi
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