(Last updated 2018-08-28.)
I am mostly interested in making scientifically important observations, like timing occultations of or by Solar System bodies and measuring variable stars.
I am also interested in citizen science projects and participate in some of them, like Galaxy Zoo.
I have been an amateur astronomer since 1975 and have worked at the European Space agency's (ESA) technical centre in Holland, ESTEC, on the ARISTOTELES mission, an earth gravity mapping mission.
Approximate coordinates: 55°20 N, 10°20 E
My other accounts:
Stack Overflow (SO).
Server Fault (SF).
Super User (SU).
Meta Stack Overflow (MSO).
My 15 minutes of fame on Super User
Blog. Sample: Jump the shark.
Full jump page with other SOFU related, Stack Exchange sites, etc.