Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 14 August 2025

‹ 13.08.2025 2025 17.08.2025 ›

Photosphere sunspot drawing and RDS evaluation

14.08.2025 photosphere drawing

High-resolution scan (3222 px)

Time
12:00 UT
Observer
Olcay PLEVNE
g
10
f
30
R
130
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ?__ – 2Group 1 · ?__ – 2 Group 2 · DSI – 7Group 2 · DSI – 7 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · CSI – 2Group 5 · CSI – 2 Group 6 · BXI – 5Group 6 · BXI – 5 Group 7 · BXI – 2Group 7 · BXI – 2 Group 8 · BXI – 5Group 8 · BXI – 5 Group 9 · AX_ – 2Group 9 · AX_ – 2 Group 10 · BXI – 3Group 10 · BXI – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=14.08.2025
Saat=12:00
Gözlemci=Olcay PLEVNE
KontrolEden=Ergün EGE
Durumaçısı=15.87
Enlemaçısı=6.61
Boylamaçısı=339.26
Boylamfark=0
GKalite=3
GDurum=B.A , K.T
Kuzeyaçısı=0.0
Sırano=20323
AyRasatNo=11
RasatÖnceki=13.08.2025
RasatSonraki=18.08.2025

[Leke Grupları]
Grupsayısı=10:6:4
LekeSayısı=30:18:12
RölatifSayı=130:78:52
01=?__ 02 +09.190 +81.237 060.497 +0.000 0000 0 +09.979 +86.549 +08.590 +75.925 +09.190 +86.490 +09.190 +76.425
02=DSI 07 +08.157 +52.853 032.113 +0.000 0000 0 +10.199 +58.370 +06.115 +47.669 +08.157 +57.837 +08.157 +47.869
03=HS_ 01 +21.953 +49.982 029.242 +0.000 0000 0 +22.931 +51.301 +20.974 +48.663 +21.953 +50.801 +21.953 +49.163
04=AX_ 01 +05.322 +31.361 010.621 -1.000 0000 0 +05.322 +31.361 +05.322 +31.361
05=CSI 02 +17.389 +29.802 009.620 +0.000 0000 0 +19.391 +32.531 +15.386 +27.730 +17.389 +32.331 +17.389 +27.273
06=BXI 05 +07.784 +12.150 351.275 +0.000 0000 0 +11.667 +14.539 +03.900 +09.490 +07.784 +14.339 +07.784 +09.690
07=BXI 02 -12.189 +32.745 012.500 +0.000 0000 0 -11.724 +33.416 -12.654 +32.750 -12.189 +32.578 -12.189 +32.912
08=BXI 05 -20.169 +27.424 006.684 +0.000 0000 0 -19.600 +29.410 -21.332 +25.439 -20.169 +29.210 -20.169 +25.639
09=AX_ 02 -09.871 -20.366 318.894 +0.000 0000 0 -09.370 -19.551 -10.705 -21.181 +00.000 +00.000 +00.000 +00.000
10=BXI 03 -02.468 -35.865 303.395 +0.000 0000 0 -00.954 -34.209 -03.983 -37.521 -02.468 -34.409 -02.468 -37.321
20250814.gzd

Chromosphere (H-α) FITS frames

No chromosphere observation for this day.

Coronado H-α animations from frame sequences

No Coronado observation for this day.