Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 18 December 2024

‹ 17.12.2024 2024 19.12.2024 ›

Photosphere sunspot drawing and RDS evaluation

18.12.2024 photosphere drawing

High-resolution scan (3235 px)

Time
08:30 UT
Observer
Burçin TANIK
g
7
f
36
R
106
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HK_ – 2Group 1 · HK_ – 2 Group 2 · BXO – 2Group 2 · BXO – 2 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · EHI – 10Group 4 · EHI – 10 Group 5 · DKI – 16Group 5 · DKI – 16 Group 6 · HH_ – 1Group 6 · HH_ – 1 Group 7 · BXI – 3Group 7 · BXI – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=18.12.2024
Saat=08:30
Gözlemci=Burçin TANIK
KontrolEden=Süleyman FİŞEK
Durumaçısı=8.46
Enlemaçısı=-1.36
Boylamaçısı=256.44
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=0.0
Sırano=20160
AyRasatNo=9
RasatÖnceki=17.12.2024
RasatSonraki=19.12.2024

[Leke Grupları]
Grupsayısı=7:3:4
LekeSayısı=36:6:30
RölatifSayı=106:36:70
01=HK_ 02 +21.326 +69.382 325.822 +0.000 0000 0 +22.308 +71.660 +20.344 +67.698 +21.326 +70.863 +21.326 +67.901
02=BXO 02 +09.797 -03.415 253.250 +0.000 0000 0 +10.353 -01.758 +09.240 -05.720 +09.797 -01.934 +09.797 -04.896
03=AX_ 02 +15.744 -23.601 232.839 +0.000 0000 0 +16.710 -22.565 +14.778 -24.637 +00.000 +00.000 +00.000 +00.000
04=EHI 10 -18.151 +58.765 315.205 13.805 0000 0 -15.375 +65.854 -20.926 +51.676 -17.310 +63.322 -19.672 +52.501
05=DKI 16 -17.910 +29.554 285.994 25.843 0000 0 -15.556 +34.980 -20.264 +25.110 -17.110 +32.700 -19.824 +26.390
06=HH_ 01 -20.267 -38.659 217.781 +0.000 0000 0 -19.197 -37.294 -21.337 -40.250 -20.267 -37.681 -20.267 -39.637
07=BXI 03 -08.548 -79.457 176.983 +0.000 0000 0 -07.708 -75.757 -09.387 -83.156 -08.548 -75.957 -08.548 -82.956
20241218.gzd

Chromosphere (H-α) FITS frames

H-α

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2024/20241218_bto · BTO · 2 frames · 42.9 MB · 08:42:40–08:44:43 UT

08:44:43 UT · 20 ms 08:42:40 UT · 60 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.