Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 28 September 2023

‹ 26.09.2023 2023 30.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

28.09.2023 photosphere drawing

High-resolution scan (3232 px)

Time
10:30 UT
Observer
Burçin TANIK
g
7
f
30
R
100
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · DSI – 9Group 3 · DSI – 9 Group 4 · HA_ – 2Group 4 · HA_ – 2 Group 5 · CAI – 6Group 5 · CAI – 6 Group 6 · CAI – 6Group 6 · CAI – 6 Group 7 · DRI – 5Group 7 · DRI – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=28.09.2023
Saat=10:30
Gözlemci=Burçin TANIK
KontrolEden=Korhan YELKENCİ
Durumaçısı=25.72
Enlemaçısı=6.85
Boylamaçısı=34.07
Boylamfark=1
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=0.1
Sırano=19834
AyRasatNo=26
RasatÖnceki=26.09.2023
RasatSonraki=30.09.2023

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=30:13:17
RölatifSayı=100:53:47
01=HS_ 01 +10.747 +67.558 101.628 +0.000 0000 0 +11.562 +68.420 +09.932 +66.695 +10.747 +67.921 +10.747 +67.195
02=AX_ 01 +18.275 +48.310 082.380 -1.000 0000 0 +18.275 +48.310 +18.275 +48.310
03=DSI 09 +15.927 -26.355 007.715 +0.000 0000 0 +17.201 -21.307 +14.652 -31.404 +15.927 -21.507 +15.927 -31.204
04=HA_ 02 +13.878 -42.220 352.480 +0.000 0000 0 +14.894 -41.300 +12.863 -43.410 +13.878 -41.665 +13.878 -42.775
05=CAI 06 -11.509 +39.931 074.100 36.920 0000 0 -08.221 +44.322 -14.797 +35.540 -13.838 +43.860 -09.370 +36.668
06=CAI 06 -21.376 +21.356 055.426 21.331 0000 0 -19.443 +24.813 -23.309 +17.899 -20.483 +23.906 -22.578 +18.530
07=DRI 05 -17.921 -68.359 325.711 19.309 0000 0 -16.620 -63.181 -19.781 -73.538 -16.847 -65.200 -19.260 -71.435
20230928.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 →

2023/20230928_bto · BTO · 6 frames · 128.6 MB · 10:40:39–10:50:38 UT

10:41:40 UT · 30 ms 10:49:18 UT · 30 ms 10:42:31 UT · 40 ms 10:50:38 UT · 80 ms · over-exposed 10:43:34 UT · 80 ms · over-exposed 10:40:39 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.