Observer: Theo van de Mortel
Location: Deurne, The Netherlands
Date: April 17-24, 1997
These drawings of the shell structure are based on observations from a 222mm reflector f/6 (104x). The location was: Deurne, The Netherlands. Although the sky brightness during the observation period was varying, thanks to almost continuing northern winds, the conditions were in general quite well, for our country even extremely good.
April 17, 1997 19:40 UT April 19, 1997 20:15 UT April 20, 1997 20:20 UT April 21, 1997 19:40 UT April 23, 1997 19:50 UT April 24, 1997 20:00 UT
Theo van de Mortel
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