Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 21 September 2023

‹ 20.09.2023 2023 22.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

21.09.2023 photosphere drawing

High-resolution scan (3230 px)

Time
09:17 UT
Observer
Burçin TANIK
g
11
f
75
R
185
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ?__ – 1Group 1 · ?__ – 1 Group 2 · CSI – 7Group 2 · CSI – 7 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · DSC – 11Group 4 · DSC – 11 Group 5 · BXI – 10Group 5 · BXI – 10 Group 6 · DSI – 13Group 6 · DSI – 13 Group 7 · CKI – 13Group 7 · CKI – 13 Group 8 · HS_ – 1Group 8 · HS_ – 1 Group 9 · ESI – 6Group 9 · ESI – 6 Group 10 · HS_ – 1Group 10 · HS_ – 1 Group 11 · CSI – 11Group 11 · CSI – 11
RDS data file (.gzd) 
[Gözlem]
Tarih=21.09.2023
Saat=09:17
Gözlemci=Burçin TANIK
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=24.95
Enlemaçısı=7.09
Boylamaçısı=127.13
Boylamfark=1
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.6
Sırano=19828
AyRasatNo=20
RasatÖnceki=20.09.2023
RasatSonraki=22.09.2023

[Leke Grupları]
Grupsayısı=11:8:3
LekeSayısı=75:57:18
RölatifSayı=185:137:48
01=?__ 01 +11.182 +85.126 212.256 -1.000 0000 0 +11.182 +85.126 +11.182 +85.126
02=CSI 07 +20.631 +66.986 194.116 11.562 0000 0 +22.356 +71.949 +18.905 +62.220 +19.763 +70.442 +21.296 +62.926
03=HS_ 01 +28.230 +43.370 170.500 +0.000 0000 0 +28.663 +44.462 +27.383 +42.278 +28.230 +43.962 +28.230 +42.778
04=DSC 11 +28.112 +18.162 145.292 +0.000 0000 0 +29.413 +21.232 +26.811 +15.910 +28.112 +21.320 +28.112 +15.291
05=BXI 10 +07.873 +06.371 133.501 +0.000 0000 0 +10.763 +08.113 +04.982 +04.628 +07.873 +07.913 +07.873 +04.828
06=DSI 13 +10.856 -17.220 110.108 35.586 0000 0 +12.950 -14.816 +08.762 -19.228 +12.470 -15.388 +09.807 -18.520
07=CKI 13 +09.206 -25.837 101.293 +0.000 0000 0 +11.341 -23.264 +07.710 -28.410 +09.206 -23.464 +09.206 -28.210
08=HS_ 01 +17.944 -43.336 083.794 +0.000 0000 0 +18.665 -42.672 +17.222 -44.000 +17.944 -43.172 +17.944 -43.500
09=ESI 06 -18.531 +46.590 173.189 18.927 0000 0 -16.100 +51.121 -20.962 +40.998 -17.375 +50.100 -20.185 +41.773
10=HS_ 01 -23.586 -27.551 099.579 +0.000 0000 0 -22.792 -26.889 -24.379 -28.213 -23.586 -27.389 -23.586 -27.713
11=CSI 11 -12.910 -55.428 071.702 27.480 0000 0 -07.771 -47.583 -16.412 -63.273 -08.872 -48.531 -14.458 -59.370
20230921.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 →

2023/20230921_bto · BTO · 6 frames · 128.6 MB · 09:26:16–09:32:03 UT

09:27:22 UT · 30 ms 09:29:48 UT · 40 ms 09:32:03 UT · 30 ms 09:30:59 UT · 60 ms · over-exposed 09:28:30 UT · 60 ms · over-exposed 09:26:16 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.