Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 15 September 2023

‹ 14.09.2023 2023 16.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

15.09.2023 photosphere drawing

High-resolution scan (3224 px)

Time
10:25 UT
Observer
Başar COŞKUNOĞLU
g
9
f
42
R
132
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · AX_ – 5Group 2 · AX_ – 5 Group 3 · AX_ – 3Group 3 · AX_ – 3 Group 4 · AX_ – 3Group 4 · AX_ – 3 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · CSO – 24Group 6 · CSO – 24 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · HA_ – 1Group 8 · HA_ – 1 Group 9 · HS_ – 1Group 9 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=15.09.2023
Saat=10:25
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Burçin TANIK
Durumaçısı=24.04
Enlemaçısı=7.21
Boylamaçısı=205.71
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.5
Sırano=19822
AyRasatNo=14
RasatÖnceki=14.09.2023
RasatSonraki=16.09.2023

[Leke Grupları]
Grupsayısı=9:8:1
LekeSayısı=42:41:1
RölatifSayı=132:121:11
01=AX_ 02 +17.150 +76.529 282.240 +0.000 0000 0 +17.411 +77.959 +16.620 +75.100 +17.150 +77.458 +17.150 +75.600
02=AX_ 05 +16.804 +67.946 273.656 +0.000 0000 0 +17.899 +69.346 +15.709 +66.545 +00.000 +00.000 +00.000 +00.000
03=AX_ 03 +24.857 +45.590 250.769 +0.000 0000 0 +25.252 +45.938 +24.463 +44.180 +24.857 +45.969 +24.857 +45.211
04=AX_ 03 +24.859 +37.707 243.417 +0.000 0000 0 +25.347 +38.642 +24.372 +36.771 +24.859 +38.143 +24.859 +37.271
05=AX_ 01 +22.362 +31.795 237.505 -1.000 0000 0 +22.362 +31.795 +22.362 +31.795
06=CSO 24 +12.910 -01.121 204.589 +0.000 0000 0 +14.195 +02.744 +11.625 -04.987 +12.910 +02.544 +12.910 -04.787
07=AX_ 02 +09.341 -09.198 196.512 +0.000 0000 0 +09.843 -08.728 +08.838 -09.667 +09.341 -09.229 +09.341 -09.167
08=HA_ 01 +28.662 -32.313 173.397 +0.000 0000 0 +29.637 -30.597 +27.687 -34.300 +28.662 -30.962 +28.662 -33.665
09=HS_ 01 -16.391 +54.256 259.966 +0.000 0000 0 -15.707 +54.980 -17.750 +53.532 -16.391 +54.480 -16.391 +54.320
20230915.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 →

2023/20230915_bc · BC · 6 frames · 128.6 MB · 10:10:55–10:14:52 UT

10:10:55 UT · 40 ms 10:11:51 UT · 40 ms 10:12:32 UT · 40 ms 10:13:38 UT · 60 ms · over-exposed 10:14:52 UT · 60 ms · over-exposed 10:14:15 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.