Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 25 June 2023

‹ 24.06.2023 2023 26.06.2023 ›

Photosphere sunspot drawing and RDS evaluation

25.06.2023 photosphere drawing

High-resolution scan (3222 px)

Time
10:45 UT
Observer
Olcay PLEVNE
g
11
f
53
R
163
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 6Group 1 · BXI – 6 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · AX_ – 4Group 3 · AX_ – 4 Group 4 · AX_ – 2Group 4 · AX_ – 2 Group 5 · DAI – 17Group 5 · DAI – 17 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · AX_ – 3Group 7 · AX_ – 3 Group 8 · HS_ – 1Group 8 · HS_ – 1 Group 9 · AX_ – 1Group 9 · AX_ – 1 Group 10 · CSI – 6Group 10 · CSI – 6 Group 11 · CSI – 11Group 11 · CSI – 11
RDS data file (.gzd) 
[Gözlem]
Tarih=25.06.2023
Saat=10:45
Gözlemci=Olcay PLEVNE
KontrolEden=Ergün EGE
Durumaçısı=-5.34
Enlemaçısı=2.18
Boylamaçısı=209.77
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19745
AyRasatNo=23
RasatÖnceki=24.06.2023
RasatSonraki=26.06.2023

[Leke Grupları]
Grupsayısı=11:7:4
LekeSayısı=53:34:19
RölatifSayı=163:104:59
01=BXI 06 +10.457 +60.224 269.994 +0.000 0000 0 +11.885 +67.198 +09.290 +53.251 +10.457 +66.998 +10.457 +53.451
02=AX_ 01 +16.676 +53.940 263.710 -1.000 0000 0 +16.676 +53.940 +16.676 +53.940
03=AX_ 04 +21.930 +52.223 261.993 +0.000 0000 0 +22.690 +53.677 +20.118 +50.769 +21.930 +53.477 +21.930 +50.969
04=AX_ 02 +17.204 +25.751 235.521 +0.000 0000 0 +17.853 +26.968 +16.554 +24.535 +17.204 +26.467 +17.204 +25.350
05=DAI 17 +23.573 +22.224 231.994 +0.000 0000 0 +26.800 +27.284 +21.138 +17.165 +23.573 +27.840 +23.573 +17.365
06=AX_ 01 +09.541 +00.965 210.735 -1.000 0000 0 +09.541 +00.965 +09.541 +00.965
07=AX_ 03 +22.342 -41.200 168.570 +0.000 0000 0 +22.791 -40.534 +21.892 -41.866 +22.342 -41.340 +22.342 -41.366
08=HS_ 01 -14.121 +78.198 287.968 +0.000 0000 0 -12.742 +80.589 -15.501 +75.808 -14.121 +80.890 -14.121 +76.307
09=AX_ 01 -17.851 +40.898 250.668 -1.000 0000 0 -17.851 +40.898 -17.851 +40.898
10=CSI 06 -19.639 +27.803 237.573 +0.000 0000 0 -17.478 +30.504 -21.801 +25.103 -19.639 +30.304 -19.639 +25.303
11=CSI 11 -15.179 -05.718 204.520 +0.000 0000 0 -10.604 -01.770 -19.754 -09.667 -15.179 -01.970 -15.179 -09.467
20230625.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 →

2023/20230625_op · OP · 5 frames · 107.1 MB · 10:36:14–10:41:35 UT

10:38:40 UT · 30 ms 10:39:36 UT · 30 ms 10:36:14 UT · 30 ms 10:41:35 UT · 60 ms · over-exposed 10:40:21 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.