Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 11 June 2023

‹ 10.06.2023 2023 12.06.2023 ›

Photosphere sunspot drawing and RDS evaluation

11.06.2023 photosphere drawing

High-resolution scan (3220 px)

Time
10:40 UT
Observer
Başar COŞKUNOĞLU
g
7
f
65
R
135
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · CSI – 8Group 2 · CSI – 8 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · BXI – 48Group 4 · BXI – 48 Group 5 · HS_ – 2Group 5 · HS_ – 2 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · HS_ – 4Group 7 · HS_ – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=11.06.2023
Saat=10:40
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Ergün EGE
Durumaçısı=-11.42
Enlemaçısı=0.53
Boylamaçısı=35.13
Boylamfark=1
GKalite=4
GDurum=
Kuzeyaçısı=-0.4
Sırano=19731
AyRasatNo=9
RasatÖnceki=10.06.2023
RasatSonraki=12.06.2023

[Leke Grupları]
Grupsayısı=7:2:5
LekeSayısı=65:9:56
RölatifSayı=135:29:106
01=HS_ 01 +24.836 +32.604 067.734 +0.000 0000 0 +25.842 +33.881 +23.830 +31.326 +24.836 +33.382 +24.836 +31.826
02=CSI 08 +22.835 +14.690 049.820 +0.000 0000 0 +24.240 +18.295 +21.646 +11.840 +22.835 +18.950 +22.835 +11.284
03=HS_ 01 -15.371 +79.904 115.340 +0.000 0000 0 -14.257 +82.123 -16.485 +77.685 -15.371 +81.623 -15.371 +78.185
04=BXI 48 -14.772 +17.143 052.273 +0.000 0000 0 -11.358 +23.204 -18.186 +11.810 -14.772 +23.400 -14.772 +11.281
05=HS_ 02 -22.284 -19.677 015.453 +0.000 0000 0 -20.875 -18.413 -23.694 -20.941 -22.284 -18.913 -22.284 -20.441
06=AX_ 01 -08.260 -26.877 008.253 -1.000 0000 0 -08.260 -26.877 -08.260 -26.877
07=HS_ 04 -22.134 -29.872 005.258 +0.000 0000 0 -21.500 -28.576 -22.769 -31.168 -22.134 -29.760 -22.134 -30.668
20230611.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 →

2023/20230611_bc · BC · 6 frames · 128.6 MB · 10:54:42–10:59:48 UT

10:57:12 UT · 30 ms 10:55:45 UT · 30 ms 10:54:42 UT · 30 ms 10:59:13 UT · 60 ms · over-exposed 10:59:48 UT · 60 ms · over-exposed 10:58:04 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.