Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 13 May 2023

‹ 09.05.2023 2023 14.05.2023 ›

Photosphere sunspot drawing and RDS evaluation

13.05.2023 photosphere drawing

High-resolution scan (3228 px)

Time
07:30 UT
Observer
Olcay PLEVNE
g
9
f
43
R
133
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 4Group 1 · HS_ – 4 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · CSI – 10Group 4 · CSI – 10 Group 5 · DSO – 3Group 5 · DSO – 3 Group 6 · DSO – 5Group 6 · DSO – 5 Group 7 · CSI – 12Group 7 · CSI – 12 Group 8 · HS_ – 3Group 8 · HS_ – 3 Group 9 · BXI – 3Group 9 · BXI – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=13.05.2023
Saat=07:30
Gözlemci=Olcay PLEVNE
KontrolEden=Korhan YELKENCİ
Durumaçısı=-21.49
Enlemaçısı=-2.92
Boylamaçısı=60.57
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19709
AyRasatNo=8
RasatÖnceki=09.05.2023
RasatSonraki=14.05.2023

[Leke Grupları]
Grupsayısı=9:7:2
LekeSayısı=43:37:6
RölatifSayı=133:107:26
01=HS_ 04 +08.174 +60.500 120.620 +0.000 0000 0 +09.540 +62.829 +06.809 +57.271 +08.174 +62.779 +08.174 +58.221
02=AX_ 01 +25.267 -00.112 060.458 -1.000 0000 0 +25.267 -00.112 +25.267 -00.112
03=AX_ 02 +12.269 -03.941 056.629 +0.000 0000 0 +12.661 -03.206 +11.876 -04.675 +12.269 -03.707 +12.269 -04.175
04=CSI 10 +21.373 -05.205 055.365 +0.000 0000 0 +23.369 -00.996 +19.377 -09.414 +21.373 -01.196 +21.373 -09.214
05=DSO 03 +12.287 -26.358 034.212 +0.000 0000 0 +13.297 -24.710 +11.278 -28.600 +12.287 -24.910 +12.287 -27.806
06=DSO 05 +17.763 -34.106 026.464 +0.000 0000 0 +18.974 -31.485 +16.553 -36.727 +17.763 -31.685 +17.763 -36.527
07=CSI 12 +08.567 -36.335 024.235 +0.000 0000 0 +09.927 -31.680 +07.207 -40.990 +08.567 -31.880 +08.567 -40.790
08=HS_ 03 -08.297 +63.624 124.194 +0.000 0000 0 -06.450 +65.719 -10.143 +61.530 -08.297 +65.218 -08.297 +62.290
09=BXI 03 -25.181 +52.543 113.113 +0.000 0000 0 -24.388 +54.133 -25.973 +50.954 -25.181 +53.632 -25.181 +51.453
20230513.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 →

2023/20230513_op · OP · 4 frames · 85.7 MB · 07:43:26–07:46:58 UT

07:45:10 UT · 30 ms 07:43:26 UT · 30 ms 07:46:16 UT · 60 ms · over-exposed 07:46:58 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.