Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 22 May 2024

‹ 21.05.2024 2024 23.05.2024 ›

Photosphere sunspot drawing and RDS evaluation

22.05.2024 photosphere drawing

High-resolution scan (3236 px)

Time
09:30 UT
Observer
Burçin TANIK
g
8
f
74
R
154
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 5Group 1 · AX_ – 5 Group 2 · HA_ – 2Group 2 · HA_ – 2 Group 3 · HA_ – 6Group 3 · HA_ – 6 Group 4 · EKI – 12Group 4 · EKI – 12 Group 5 · CAI – 17Group 5 · CAI – 17 Group 6 · EHC – 13Group 6 · EHC – 13 Group 7 · ?__ – 13Group 7 · ?__ – 13 Group 8 · CSI – 6Group 8 · CSI – 6
RDS data file (.gzd) 
[Gözlem]
Tarih=22.05.2024
Saat=09:30
Gözlemci=Burçin TANIK
KontrolEden=Süleyman FİŞEK
Durumaçısı=-18.61
Enlemaçısı=-1.79
Boylamaçısı=149.65
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=-1.4
Sırano=19984
AyRasatNo=15
RasatÖnceki=21.05.2024
RasatSonraki=23.05.2024

[Leke Grupları]
Grupsayısı=8:1:7
LekeSayısı=74:5:69
RölatifSayı=154:15:139
01=AX_ 05 +19.894 +29.593 179.243 +0.000 0000 0 +20.666 +30.760 +19.122 +28.426 +19.894 +30.260 +19.894 +28.926
02=HA_ 02 -13.978 +72.760 222.410 +0.000 0000 0 -13.213 +74.152 -14.744 +71.368 -13.978 +73.652 -13.978 +71.868
03=HA_ 06 -06.924 +53.434 203.840 +0.000 0000 0 -05.592 +55.671 -08.256 +51.197 -06.924 +55.171 -06.924 +51.697
04=EKI 12 -08.965 +47.170 196.820 12.974 0000 0 -07.147 +41.855 -10.784 +52.486 -09.674 +48.834 -08.400 +43.292
05=CAI 17 -05.863 +22.950 172.600 +0.000 0000 0 -04.595 +27.812 -07.132 +18.870 -05.863 +27.612 -05.863 +18.287
06=EHC 13 -13.363 -01.540 148.596 30.488 0000 0 -09.134 +05.230 -17.591 -07.131 -10.905 +03.432 -15.655 -04.681
07=?__ 13 -06.811 -08.502 141.148 +0.000 0000 0 -03.704 -06.672 -09.919 -10.333 -06.811 -07.171 -06.811 -09.832
08=CSI 06 -09.137 -54.547 095.103 +0.000 0000 0 -08.212 -50.828 -10.630 -58.267 -09.137 -51.280 -09.137 -58.670
20240522.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 →

2024/20240522_bto · BTO · 6 frames · 128.6 MB · 09:30:21–09:34:51 UT

09:34:51 UT · 30 ms 09:32:18 UT · 30 ms 09:33:05 UT · 40 ms 09:30:21 UT · 60 ms · over-exposed 09:31:27 UT · 70 ms · over-exposed 09:33:57 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.