Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 12 July 2024

‹ 10.07.2024 2024 13.07.2024 ›

Photosphere sunspot drawing and RDS evaluation

12.07.2024 photosphere drawing

High-resolution scan (3231 px)

Time
07:50 UT
Observer
Ergün EGE
g
9
f
68
R
158
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CSO – 4Group 1 · CSO – 4 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · FKC – 45Group 4 · FKC – 45 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · DSI – 11Group 6 · DSI – 11 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · HS_ – 2Group 8 · HS_ – 2 Group 9 · AX_ – 1Group 9 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=12.07.2024
Saat=07:50
Gözlemci=Ergün EGE
KontrolEden=Süleyman FİŞEK
Durumaçısı=2.62
Enlemaçısı=4.08
Boylamaçısı=195.59
Boylamfark=2
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.5
Sırano=20029
AyRasatNo=10
RasatÖnceki=10.07.2024
RasatSonraki=13.07.2024

[Leke Grupları]
Grupsayısı=9:2:7
LekeSayısı=68:6:62
RölatifSayı=158:26:132
01=CSO 04 +14.968 -51.470 144.543 +0.000 0000 0 +16.643 -46.721 +13.293 -55.373 +14.968 -46.921 +14.968 -55.173
02=AX_ 02 +13.753 -64.490 131.541 +0.000 0000 0 +14.267 -63.174 +13.239 -64.924 +13.753 -64.115 +13.753 -64.865
03=AX_ 01 -19.249 +43.750 239.340 +0.000 0000 0 -18.800 +44.392 -19.698 +43.109 -19.249 +43.891 -19.249 +43.609
04=FKC 45 -08.792 +14.552 210.142 +0.000 0000 0 -04.650 +22.806 -12.934 +06.298 -08.792 +22.606 -08.792 +06.498
05=AX_ 01 -23.877 -24.939 170.651 +0.000 0000 0 -23.481 -24.632 -24.272 -25.246 -23.877 -25.132 -23.877 -24.746
06=DSI 11 -07.736 -32.659 162.931 +0.000 0000 0 -06.410 -28.537 -09.432 -36.782 -07.736 -28.737 -07.736 -36.582
07=AX_ 01 -18.189 -36.163 159.427 +0.000 0000 0 -17.870 -35.845 -18.508 -36.481 -18.189 -36.345 -18.189 -35.981
08=HS_ 02 -24.151 -41.520 154.538 +0.000 0000 0 -22.527 -39.245 -25.776 -42.859 -24.151 -40.213 -24.151 -42.827
09=AX_ 01 -16.312 -43.342 152.248 +0.000 0000 0 -15.872 -43.116 -16.753 -43.569 -16.312 -43.615 -16.312 -43.690
20240712.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 →

2024/20240712_ee · EE · 7 frames · 150.0 MB · 08:09:40–08:20:57 UT

08:15:06 UT · 30 ms 08:09:40 UT · 40 ms 08:15:41 UT · 40 ms 08:19:57 UT · 50 ms · over-exposed 08:12:07 UT · 50 ms · over-exposed 08:20:57 UT · 60 ms · over-exposed 08:13:12 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.