Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 25 March 2023

‹ 24.03.2023 2023 27.03.2023 ›

Photosphere sunspot drawing and RDS evaluation

25.03.2023 photosphere drawing

High-resolution scan (3228 px)

Time
08:40 UT
Observer
Başar COŞKUNOĞLU
g
9
f
68
R
158
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CSI – 7Group 1 · CSI – 7 Group 2 · CSI – 14Group 2 · CSI – 14 Group 3 · HH_ – 4Group 3 · HH_ – 4 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · HH_ – 6Group 5 · HH_ – 6 Group 6 · CSI – 23Group 6 · CSI – 23 Group 7 · AX_ – 5Group 7 · AX_ – 5 Group 8 · DHO – 6Group 8 · DHO – 6 Group 9 · HS_ – 2Group 9 · HS_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=25.03.2023
Saat=08:40
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Ergün EGE
Durumaçısı=-25.67
Enlemaçısı=-6.88
Boylamaçısı=347.03
Boylamfark=2
GKalite=3
GDurum=H.S
Kuzeyaçısı=-0.3
Sırano=19679
AyRasatNo=13
RasatÖnceki=24.03.2023
RasatSonraki=27.03.2023

[Leke Grupları]
Grupsayısı=9:4:5
LekeSayısı=68:26:42
RölatifSayı=158:66:92
01=CSI 07 +25.550 +34.311 021.341 +0.000 0000 0 +25.946 +37.182 +24.163 +31.440 +25.550 +36.982 +25.550 +31.640
02=CSI 14 +19.191 +04.989 352.190 02.970 0000 0 +22.405 +07.873 +15.977 +02.106 +18.164 +07.203 +18.337 +02.458
03=HH_ 04 +23.480 -01.197 345.833 +0.000 0000 0 +25.470 +00.261 +21.490 -02.655 +23.480 -00.239 +23.480 -02.155
04=HS_ 01 +15.760 -64.841 282.189 +0.000 0000 0 +16.648 -64.304 +14.872 -65.379 +15.760 -64.804 +15.760 -64.879
05=HH_ 06 -22.790 +22.125 009.155 +0.000 0000 0 -20.504 +24.150 -25.750 +20.236 -22.790 +23.582 -22.790 +20.668
06=CSI 23 -21.398 +08.501 355.531 50.893 0000 0 -19.640 +12.203 -23.157 +04.799 -22.314 +07.236 -20.654 +05.885
07=AX_ 05 -14.988 +05.706 352.736 +0.000 0000 0 -14.331 +06.236 -15.645 +05.175 -14.988 +05.736 -14.988 +05.675
08=DHO 06 -26.822 +01.316 348.346 21.510 0000 0 -25.464 +03.590 -28.179 -00.959 -27.481 +02.841 -26.185 -00.451
09=HS_ 02 -17.885 -38.485 308.545 +0.000 0000 0 -16.996 -37.416 -18.774 -39.554 -17.885 -37.916 -17.885 -39.540
20230325.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 →

2023/20230325_bc · BC · 6 frames · 128.6 MB · 09:11:32–09:15:12 UT

09:12:41 UT · 40 ms 09:14:38 UT · 70 ms 09:13:57 UT · 70 ms 09:11:32 UT · 40 ms 09:15:12 UT · 70 ms 09:13:17 UT · 40 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.