Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 21 July 2024

‹ 20.07.2024 2024 22.07.2024 ›

Photosphere sunspot drawing and RDS evaluation

21.07.2024 photosphere drawing

High-resolution scan (3231 px)

Time
10:25 UT
Observer
Ergün EGE
g
9
f
74
R
164
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 4Group 1 · BXO – 4 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · CSO – 5Group 4 · CSO – 5 Group 5 · DAO – 7Group 5 · DAO – 7 Group 6 · EHC – 23Group 6 · EHC – 23 Group 7 · EHC – 25Group 7 · EHC – 25 Group 8 · HS_ – 1Group 8 · HS_ – 1 Group 9 · DRO – 6Group 9 · DRO – 6
RDS data file (.gzd) 
[Gözlem]
Tarih=21.07.2024
Saat=10:25
Gözlemci=Ergün EGE
KontrolEden=Ergün EGE
Durumaçısı=6.61
Enlemaçısı=4.94
Boylamaçısı=75.07
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.6
Sırano=20038
AyRasatNo=19
RasatÖnceki=20.07.2024
RasatSonraki=22.07.2024

[Leke Grupları]
Grupsayısı=9:4:5
LekeSayısı=74:12:62
RölatifSayı=164:52:112
01=BXO 04 +16.517 +74.318 149.388 +0.000 0000 0 +17.527 +76.993 +15.508 +71.644 +16.517 +76.793 +16.517 +71.844
02=AX_ 01 +20.321 +38.243 113.313 +0.000 0000 0 +20.575 +38.672 +20.670 +37.814 +20.321 +38.172 +20.321 +38.314
03=AX_ 02 +24.934 -02.390 073.310 +0.000 0000 0 +25.443 -00.896 +24.426 -03.181 +24.934 -01.748 +24.934 -03.330
04=CSO 05 +17.390 -18.280 057.420 +0.000 0000 0 +17.832 -15.680 +16.948 -20.988 +17.390 -16.126 +17.390 -20.434
05=DAO 07 -05.809 +41.753 116.823 +0.000 0000 0 -02.957 +46.349 -08.661 +37.156 -05.809 +46.149 -05.809 +37.356
06=EHC 23 -07.591 +20.132 095.202 +0.000 0000 0 -05.209 +25.648 -09.973 +14.617 -07.591 +25.448 -07.591 +14.817
07=EHC 25 -08.272 +08.370 083.107 +0.000 0000 0 -04.321 +14.188 -12.223 +01.886 -08.272 +13.988 -08.272 +02.860
08=HS_ 01 -17.255 -08.476 066.594 +0.000 0000 0 -16.341 -07.413 -18.169 -09.539 -17.255 -07.913 -17.255 -09.390
09=DRO 06 -13.900 -58.993 016.770 +0.000 0000 0 -11.172 -53.284 -15.900 -64.703 -13.900 -53.484 -13.900 -64.503
20240721.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 →

2024/20240721_ee · EE · 7 frames · 150.0 MB · 10:28:04–10:49:17 UT

10:48:11 UT · 40 ms 10:28:04 UT · 30 ms 10:29:30 UT · 40 ms 10:47:07 UT · 30 ms 10:49:17 UT · 50 ms · over-exposed 10:32:07 UT · 50 ms · over-exposed 10:34:22 UT · 60 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.