These are the users that follow Christiaan Berger mutually.
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dnault42 dnault42 110187271
Astrobert Bert Scheuneman 287492516
chrisvdberge Christian van den Berge 29242807
northisup2 John Leader 1014439363
Nightsky_NL Nightsky_NL 1189734
Albert_van_Duin Albert van Duin 240276189
ekempen Emiel Kempen 352122
Schicko Schicko 339840
marziobambini Marzio Bambini 616342118
Dieter333 Dieter333 146160108
grsotnas Gabriel R. Santos (grsotnas) 2801099741
Joostie Joostie 232174134
caneca Caneca 211116
bramgoossens Bram Goossens 353959
RuudOnline Ruud de Vries 385576
FrancoisT Francois Theriault 203356873
jbarabas Janos Barabas 465152105
Gotthard Gotthard Stuhm 39518276011
IrvingPieters Irving Pieters 70129136
rosen447 Rosen 143598
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Ante Ante Jelić 0148182
Lukasz83 Łukasz Sujka 3471085392
Horst_Twele Horst Twele 200129215
Joerg_Meier Joerg Meier 232165322
Thyreen Xander & Merijn 4818
keesscherer Kees Scherer 1595824003
vermakke Marc Verhoeven 1391085774
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daveryan Dave Bevers 83359
WilcoK Wilco Kasteleijn 4987109
amateurastronoom Gerard Smit 1381223
kdierick Kristof Dierick 505166
PieterjanD PieterjanD 101518
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geertvandenbroeck Geert Vanden Broeck 804242
supernov Vincent Groenewold 92115
xSteeljaw Sören Ottenhof 183367
Tino96 Martino Fossati 02268
Florian_Schleburg Florian Schleburg 375255
jean-no67 Jean-Noel 1387592
samdav14 S. DAVID 803652
jmacon Jerry Macon 400773642
ncwolfie Randy Flynn 5160116
kmille16 Camille COLOMB 139198223
Rakshas Alexander Sorokin 172444613
VicV Victor Van Puyenbroeck 170426196
Georges Georges 52612492967
RRBBarbosa Ruben Barbosa 21415111699
Big_Dipper Big_Dipper 7313361393
lotalmen ASTROPIXELAB (Lorenzo Taltavull Menéndez) 69120295
RJF-Astro Ruben Jorksveld 988777
HansvanOverzee Hans van Overzee 794262
JohanBogaerts Johan Bogaerts 59104209