Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 11 September 2023

‹ 10.09.2023 2023 12.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

11.09.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:40 UT
Observer
Hikmet ÇAKMAK
g
14
f
77
R
217
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ?__ – 1Group 1 · ?__ – 1 Group 2 · BXO – 2Group 2 · BXO – 2 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · EAC – 24Group 4 · EAC – 24 Group 5 · CAI – 23Group 5 · CAI – 23 Group 6 · AX_ – 2Group 6 · AX_ – 2 Group 7 · AX_ – 3Group 7 · AX_ – 3 Group 8 · HR_ – 1Group 8 · HR_ – 1 Group 9 · ?__ – 1Group 9 · ?__ – 1 Group 10 · BXO – 3Group 10 · BXO – 3 Group 11 · AX_ – 2Group 11 · AX_ – 2 Group 12 · BXI – 6Group 12 · BXI – 6 Group 13 · BXO – 3Group 13 · BXO – 3 Group 14 · CAI – 4Group 14 · CAI – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=11.09.2023
Saat=08:40
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Olcay PLEVNE
Durumaçısı=23.3
Enlemaçısı=7.24
Boylamaçısı=259.48
Boylamfark=2
GKalite=3
GDurum=G.T , B.A , H.S , K.T
Kuzeyaçısı=-0.4
Sırano=19818
AyRasatNo=10
RasatÖnceki=10.09.2023
RasatSonraki=12.09.2023

[Leke Grupları]
Grupsayısı=14:9:5
LekeSayısı=77:59:18
RölatifSayı=217:149:68
01=?__ 01 +19.970 +81.450 340.525 +0.000 0000 0 +20.843 +82.449 +19.970 +79.641 +19.970 +82.354 +19.970 +80.546
02=BXO 02 +16.529 +77.607 337.870 16.687 0000 0 +17.890 +81.974 +15.167 +73.240 +15.697 +79.870 +17.474 +73.929
03=AX_ 02 +15.171 +53.641 313.121 +0.000 0000 0 +15.740 +53.923 +14.601 +53.360 +15.171 +53.423 +15.171 +53.859
04=EAC 24 +15.765 +19.720 278.552 02.404 0000 0 +17.930 +25.353 +13.599 +12.790 +15.871 +24.460 +16.338 +13.259
05=CAI 23 +23.704 -13.445 246.350 12.819 0000 0 +25.725 -07.484 +21.682 -19.406 +22.531 -08.420 +24.956 -18.766
06=AX_ 02 +09.425 -41.158 218.322 +0.000 0000 0 +09.702 -40.520 +09.148 -42.264 +09.425 -40.786 +09.425 -41.530
07=AX_ 03 +10.815 -52.772 206.708 +0.000 0000 0 +11.269 -52.184 +10.360 -53.361 +10.815 -52.683 +10.815 -52.861
08=HR_ 01 +08.412 -63.190 196.290 +0.000 0000 0 +08.866 -62.798 +07.958 -63.583 +08.412 -63.297 +08.412 -63.830
09=?__ 01 +27.999 -88.954 170.526 +0.000 0000 0 +28.948 -87.943 +27.500 -89.966 +27.999 -88.443 +27.999 -89.465
10=BXO 03 -22.811 +64.500 323.530 +0.000 0000 0 -22.293 +66.740 -23.329 +61.360 -22.811 +66.690 -22.811 +62.310
11=AX_ 02 -14.977 +17.370 276.517 +0.000 0000 0 -14.440 +18.100 -15.515 +15.974 -14.977 +17.933 -14.977 +16.807
12=BXI 06 -16.700 -04.760 254.720 14.870 0000 0 -15.940 -02.468 -16.921 -07.520 -15.472 -03.170 -16.473 -06.789
13=BXO 03 -26.511 -13.556 245.924 +0.000 0000 0 -26.180 -10.194 -27.400 -16.918 -26.511 -10.694 -26.511 -16.418
14=CAI 04 -06.840 -56.428 203.520 20.716 0000 0 -05.120 -54.459 -07.156 -58.397 -05.533 -54.974 -06.718 -58.110
20230911.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 →

2023/20230911_hc · HC · 8 frames · 171.4 MB · 08:39:29–09:45:43 UT

09:45:43 UT · 30 ms 09:01:19 UT · 30 ms 09:30:50 UT · 30 ms 09:06:51 UT · 30 ms 08:39:29 UT · 30 ms 08:53:49 UT · 60 ms · over-exposed 09:44:50 UT · 60 ms · over-exposed 09:14:05 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.