Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 24 September 2023

‹ 23.09.2023 2023 25.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

24.09.2023 photosphere drawing

High-resolution scan (3230 px)

Time
09:50 UT
Observer
Ergün EGE
g
9
f
80
R
170
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · CAI – 5Group 3 · CAI – 5 Group 4 · BXI – 8Group 4 · BXI – 8 Group 5 · BXI – 9Group 5 · BXI – 9 Group 6 · CSI – 13Group 6 · CSI – 13 Group 7 · HS_ – 1Group 7 · HS_ – 1 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · DSI – 40Group 9 · DSI – 40
RDS data file (.gzd) 
[Gözlem]
Tarih=24.09.2023
Saat=09:50
Gözlemci=Ergün EGE
KontrolEden=Ergün EGE
Durumaçısı=25.32
Enlemaçısı=7
Boylamaçısı=87.23
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.4
Sırano=19831
AyRasatNo=23
RasatÖnceki=23.09.2023
RasatSonraki=25.09.2023

[Leke Grupları]
Grupsayısı=9:7:2
LekeSayısı=80:39:41
RölatifSayı=170:109:61
01=AX_ 01 +29.329 +79.352 166.582 +0.000 0000 0 +29.693 +81.350 +28.965 +77.669 +29.329 +80.692 +29.329 +78.110
02=AX_ 02 +30.989 +62.589 149.819 +0.000 0000 0 +31.784 +63.453 +30.195 +61.725 +30.989 +62.953 +30.989 +62.225
03=CAI 05 +29.140 +53.581 140.811 +0.000 0000 0 +30.941 +55.695 +27.340 +51.468 +29.140 +55.495 +29.140 +51.668
04=BXI 08 +08.110 +53.880 140.318 +0.000 0000 0 +11.128 +56.828 +05.910 +49.348 +08.110 +56.628 +08.110 +49.548
05=BXI 09 +12.550 +23.102 110.332 +0.000 0000 0 +13.770 +24.741 +11.331 +21.464 +12.550 +24.541 +12.550 +21.664
06=CSI 13 +10.616 +13.323 100.553 +0.000 0000 0 +13.376 +16.436 +07.855 +10.209 +10.616 +16.236 +10.616 +10.409
07=HS_ 01 +18.505 -04.462 082.768 +0.000 0000 0 +19.139 -03.837 +17.871 -05.870 +18.505 -03.945 +18.505 -04.978
08=AX_ 01 -23.137 +10.883 098.113 +0.000 0000 0 -22.744 +11.990 -23.529 +10.667 -23.137 +11.450 -23.137 +10.722
09=DSI 40 -11.840 -14.654 072.576 +0.000 0000 0 -07.860 -08.591 -16.594 -20.717 -11.840 -08.791 -11.840 -20.517
20230924.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 →

2023/20230924_ee · EE · 11 frames · 235.7 MB · 09:59:25–10:20:36 UT

10:19:27 UT · 50 ms · over-exposed 10:00:53 UT · 30 ms 10:02:22 UT · 40 ms 10:18:53 UT · 40 ms 10:07:56 UT · 50 ms · over-exposed 10:18:14 UT · 30 ms 09:59:25 UT · 30 ms · over-exposed 10:08:34 UT · 60 ms · over-exposed 10:20:01 UT · 60 ms · over-exposed 10:10:02 UT · 70 ms · over-exposed 10:20:36 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.