Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 23 July 2023

‹ 22.07.2023 2023 24.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

23.07.2023 photosphere drawing

High-resolution scan (3220 px)

Time
11:15 UT
Observer
Başar COŞKUNOĞLU
g
11
f
42
R
152
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HH_ – 1Group 1 · HH_ – 1 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · FSI – 19Group 3 · FSI – 19 Group 4 · HA_ – 3Group 4 · HA_ – 3 Group 5 · HH_ – 5Group 5 · HH_ – 5 Group 6 · HS_ – 3Group 6 · HS_ – 3 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · HS_ – 2Group 9 · HS_ – 2 Group 10 · AX_ – 1Group 10 · AX_ – 1 Group 11 · DAO – 4Group 11 · DAO – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=23.07.2023
Saat=11:15
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Ergün EGE
Durumaçısı=7.16
Enlemaçısı=5.06
Boylamaçısı=198.94
Boylamfark=0
GKalite=4
GDurum=
Kuzeyaçısı=-0.5
Sırano=19771
AyRasatNo=22
RasatÖnceki=22.07.2023
RasatSonraki=24.07.2023

[Leke Grupları]
Grupsayısı=11:8:3
LekeSayısı=42:35:7
RölatifSayı=152:115:37
01=HH_ 01 +22.826 +75.765 274.705 +0.000 0000 0 +24.309 +77.598 +21.343 +73.932 +22.826 +77.980 +22.826 +74.432
02=AX_ 02 +25.970 +61.496 260.436 +0.000 0000 0 +26.308 +62.727 +25.633 +60.264 +25.970 +62.227 +25.970 +60.764
03=FSI 19 +09.200 +47.770 246.170 17.645 0000 0 +12.310 +55.880 +06.910 +39.660 +07.653 +50.392 +11.106 +39.457
04=HA_ 03 +23.779 +29.943 228.883 +0.000 0000 0 +24.670 +31.780 +22.889 +28.809 +23.779 +30.929 +23.779 +28.958
05=HH_ 05 +15.990 -25.787 173.153 +0.000 0000 0 +16.481 -24.400 +13.718 -27.533 +15.990 -24.721 +15.990 -26.854
06=HS_ 03 +19.498 -30.406 168.534 +0.000 0000 0 +20.222 -29.450 +18.773 -31.361 +19.498 -29.951 +19.498 -30.861
07=AX_ 01 +17.275 -36.198 162.742 -1.000 0000 0 +17.275 -36.198 +17.275 -36.198
08=AX_ 01 +15.152 -41.321 157.619 -1.000 0000 0 +15.152 -41.321 +15.152 -41.321
09=HS_ 02 -25.412 +33.897 232.837 +0.000 0000 0 -24.721 +34.992 -26.103 +32.802 -25.412 +34.492 -25.412 +33.302
10=AX_ 01 -16.277 +33.130 231.953 -1.000 0000 0 -16.277 +33.130 -16.277 +33.130
11=DAO 04 -07.200 -03.431 195.509 +0.000 0000 0 -06.133 +00.171 -08.268 -07.330 -07.200 -00.290 -07.200 -06.833
20230723.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 →

2023/20230723_bc · BC · 5 frames · 107.1 MB · 11:33:17–11:36:49 UT

11:34:58 UT · 40 ms 11:35:34 UT · 40 ms 11:33:17 UT · 40 ms 11:36:12 UT · 60 ms · over-exposed 11:36:49 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.