Tuesday, December 22, 2009
Self built dew heater controller
The Dutch atmosphere is generally speaking very moist. This causes telescope mirrors to fog up. To prevent this I have dew heaters on my telescope. The ones I have are a little bit too heavy so they must be regulated. For that I am building my own 3 channel dew heater controller and 1 channel fan speed controller. Here the 1st dew heater channel is ready.........
Sunday, December 20, 2009
An even more snow......
Friday, December 18, 2009
Sunday, December 13, 2009
Deepskydag 2009
Last saturday we had a meeting of the Dutch group of deepsky observers, many nice presentations were held (see the link: http://www.astroforum.nl/deepskydag-2009-aftertalk-topic-t23035.html) and we met a lot of people we normally only meet at www.astroforum.nl. Here are some impressions
The winner of the international constest of the smallest 200mm dobsonian in the world: Bert Boghelman.
Really everything you need, collimation cap, eyepieces, batteries for the secondary mirror heating etc. etc. etc. is put inside the small box.
Presentation of Jan van Gastel on observing in the French Mountains.......
Workshop on deepsky object sketching.................
The winner of the international constest of the smallest 200mm dobsonian in the world: Bert Boghelman.
Really everything you need, collimation cap, eyepieces, batteries for the secondary mirror heating etc. etc. etc. is put inside the small box.
Presentation of Jan van Gastel on observing in the French Mountains.......
Workshop on deepsky object sketching.................
Liev
Tuesday, December 08, 2009
Brassband Sirena Hooge Mierde music contest
Wednesday, December 02, 2009
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