FRANKY DUBOIS ' SUN PAGE
25 july 1982 : First determination of the Wolfnumber with a 60mm f/15 refractor |
60MM.jpg 60 mm refractor F15
1 january 1986 : First determination of the Becknumber
28 july 1986 : First photographic determination of sunspotposition by double exposure
12 november 1986 : New instrument a 102mm f/15 refractor
102MM.jpg 102 mm refractor F15
1 january 1987 : First determination of the Classification Value (CV)
1 january 1989 : First determination of the Pettis Sunspot Number (SN)
1 july 1993 : First determination of the Paderborn Sunspot Number (IS)
11 january 1994 : 1000th photographic double exposure of the sun
18 july 1996 : 3000th determination of the Wolfnumber
9 august 1996 : Completely new observatory and instrument
Observatory : building of 5.6 x 3.6 m, dome of 3 m
Instrument : 125mm f/20 refractor with Baader Herschel optical wedge
Coronograph : 70mm f/15 prominence refractor with a 10 Angström bandpass filter
2 may 1997 : Birth of my own web-site !
7 july 1998 : Meeting whit Rik Hill of the ALPO in Brussels Airport hill.jpg Rik Hill and me.
3 march 2000 : First digital image made using a Phillips Vesta Pro Webcam camera.
26 october 2000 : 4000th determination of the Wolfnumber
16 september 2004 : 5000th determination of the Wolfnumber
21 april 2005 : First light with my Coronado PST
5 june 2006 : First light with the Lille 20/20 Ha system