Instrumentation of Jeffrey Carels
Instrumentation of Lieve Meeus
History:
January '98 - May '98:
- instrument: a 10x50 binoculair
- first regular observations : projection on a 7 cm diameter template
June '98 - June '99:
- instrument: a Intes-"telelens" converted into a telescope
- diameter 100 cm; f/10; filter: Mylar
- projection of the sun onto 14 cm Stonyhurst discs
- number of observations June '98 to December '98: 94
July '99 - ongoing to present:
- instrument: an Vixen apo-refractor on a G.P. mount
- diameter: 102 mm; f/6,5; magnification: 73x
- direct viewing with Baader AstroSolar foil (a full-aperture Solar-Screen)
- an ocular with a grid scale in it to facilitate positioning and counting sunspots
Objective: only white light observations to determine:
- the Waldmeier Classification, the Wolf number, the "new" area (R*) or Beck number;
- the McIntosh Classification and the CV-Classification Values according to Malde,
- supplemented with detail sunspot drawings
- number of observations January '99 - December '99: 161
- number of observations January 2000 - December 2000: 125
Monthly reports have been sent since June '98 to the Belgian Solar Observers Head: F. Dubois
Lieve Meeus, Erps-Kwerps
Instrumentation of Hendrik De Backer.
He use a 140 mm reflector to project the sun into a box fixed at the telescoop.
Hendrik has already 16 years experience in observing our sun.
Instrumentation of Jean Bourgeois in Ciney
White light observation:
Newton telescope diameter 135mm F/D=6 . Primary mirror not aluminized, power 45X, green filter, used for counting and characterizing sunspots.
Refractor diameter 80mm F/D=15 . projection on a 15cm diameter template used for positioning sunspots and calculate their coordinates.
Ha observations:
Refractor 80mm F/D=15 stopped at 40mm. Lumicon 1.4 A filter +I.R. prefilter, used visually for counting and characterizing protuberances and their latitude determination. Used vidiographically for recording flares evolution.
History
This home-made instrument in on use since 1990, and systimatic sunspot observations are sent to SIDC since 1992.The average correction factor for the last three years is 0.748. Southern Belgian climate allows 175-185 observable days a year. The monthly reports are also sent to the Belgian Solar Observers and the O.A.A. Solar Division in Japan.
