Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 24 April 2024

‹ 22.04.2024 2024 25.04.2024 ›

Photosphere sunspot drawing and RDS evaluation

24.04.2024 photosphere drawing

High-resolution scan (3239 px)

Time
07:50 UT
Observer
Burçin TANIK
g
14
f
117
R
257
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 3Group 1 · AX_ – 3 Group 2 · HS_ – 1Group 2 · HS_ – 1 Group 3 · ?__ – 13Group 3 · ?__ – 13 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · HS_ – 1Group 5 · HS_ – 1 Group 6 · ESC – 15Group 6 · ESC – 15 Group 7 · HS_ – 1Group 7 · HS_ – 1 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · FHC – 42Group 9 · FHC – 42 Group 10 · AX_ – 4Group 10 · AX_ – 4 Group 11 · BXI – 7Group 11 · BXI – 7 Group 12 · CAI – 19Group 12 · CAI – 19 Group 13 · DSO – 4Group 13 · DSO – 4 Group 14 · BXI – 5Group 14 · BXI – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=24.04.2024
Saat=07:50
Gözlemci=Burçin TANIK
KontrolEden=Süleyman FİŞEK
Durumaçısı=-25.08
Enlemaçısı=-4.79
Boylamaçısı=160.76
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-1.0
Sırano=19967
AyRasatNo=20
RasatÖnceki=22.04.2024
RasatSonraki=25.04.2024

[Leke Grupları]
Grupsayısı=14:8:6
LekeSayısı=117:36:81
RölatifSayı=257:116:141
01=AX_ 03 +27.444 +60.435 221.195 +0.000 0000 0 +28.109 +61.349 +26.779 +59.521 +27.444 +60.849 +27.444 +60.210
02=HS_ 01 +30.619 +50.190 210.779 +0.000 0000 0 +31.216 +51.593 +30.220 +48.445 +30.619 +51.264 +30.619 +49.116
03=?__ 13 +17.385 +33.414 194.174 +0.000 0000 0 +18.544 +38.348 +16.227 +28.481 +17.385 +37.847 +17.385 +28.981
04=HS_ 01 +12.137 +23.256 184.160 +0.000 0000 0 +12.830 +23.903 +11.445 +22.610 +12.137 +23.403 +12.137 +23.110
05=HS_ 01 +14.386 +17.910 177.851 +0.000 0000 0 +14.928 +17.530 +13.844 +16.653 +14.386 +17.848 +14.386 +17.972
06=ESC 15 +21.938 +16.214 176.974 +0.000 0000 0 +23.431 +21.845 +20.444 +10.584 +21.938 +21.645 +21.938 +10.784
07=HS_ 01 +13.502 +04.572 165.332 +0.000 0000 0 +14.495 +05.467 +12.508 +03.676 +13.502 +04.968 +13.502 +04.176
08=AX_ 01 +02.218 -24.317 136.443 -1.000 0000 0 +02.218 -24.317 +02.218 -24.317
09=FHC 42 -09.556 +59.672 220.432 12.519 0000 0 -05.939 +70.745 -13.173 +48.599 -07.598 +69.119 -11.389 +51.754
10=AX_ 04 -20.816 +22.935 183.695 +0.000 0000 0 -20.270 +24.371 -21.363 +21.500 -20.816 +23.870 -20.816 +22.000
11=BXI 07 -14.330 -15.310 145.450 +0.000 0000 0 -12.784 -10.290 -15.877 -20.329 -14.330 -10.490 -14.330 -20.129
12=CAI 19 -08.453 -27.850 132.910 28.923 0000 0 -05.565 -23.100 -11.341 -32.601 -06.717 -24.740 -10.175 -30.352
13=DSO 04 -26.461 -32.233 128.527 +0.000 0000 0 -25.470 -27.391 -27.876 -37.740 -26.461 -27.591 -26.461 -36.874
14=BXI 05 -12.849 -43.794 116.966 33.388 0000 0 -11.196 -41.627 -14.501 -45.962 -12.168 -42.310 -14.139 -45.240
20240424.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 →

2024/20240424_bto · BTO · 2 frames · 42.9 MB · 07:52:32–07:54:42 UT

07:54:42 UT · 30 ms 07:52:32 UT · 80 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.