Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 7 May 2024

‹ 06.05.2024 2024 12.05.2024 ›

Photosphere sunspot drawing and RDS evaluation

07.05.2024 photosphere drawing

High-resolution scan (3220 px)

Time
12:30 UT
Observer
Olcay PLEVNE
g
6
f
77
R
137
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EAC – 15Group 1 · EAC – 15 Group 2 · HS_ – 2Group 2 · HS_ – 2 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · FKC – 57Group 5 · FKC – 57 Group 6 · AX_ – 1Group 6 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=7.05.2024
Saat=12:30
Gözlemci=Olcay PLEVNE
KontrolEden=Süleyman FİŞEK
Durumaçısı=-22.71
Enlemaçısı=-3.47
Boylamaçısı=346.38
Boylamfark=0
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19974
AyRasatNo=5
RasatÖnceki=06.05.2024
RasatSonraki=12.05.2024

[Leke Grupları]
Grupsayısı=6:4:2
LekeSayısı=77:19:58
RölatifSayı=137:59:78
01=EAC 15 +25.459 +48.537 034.917 +0.000 0000 0 +28.150 +56.143 +22.902 +40.932 +25.459 +55.943 +25.459 +41.132
02=HS_ 02 +06.906 +30.450 016.830 +0.000 0000 0 +08.317 +32.200 +05.495 +28.899 +06.906 +31.601 +06.906 +29.300
03=HS_ 01 +25.837 -39.893 306.487 +0.000 0000 0 +27.354 -37.964 +24.321 -41.822 +25.837 -38.464 +25.837 -41.322
04=HS_ 01 +16.120 -61.904 284.476 +0.000 0000 0 +16.983 -60.282 +15.420 -63.526 +16.120 -60.782 +16.120 -63.260
05=FKC 57 -19.233 -01.484 344.896 +0.000 0000 0 -14.851 +10.477 -23.616 -13.445 -19.233 +10.277 -19.233 -13.245
06=AX_ 01 -08.653 -24.732 321.648 -1.000 0000 0 -08.653 -24.732 -08.653 -24.732
20240507.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 →

2024/20240507_op · OP · 4 frames · 85.7 MB · 12:20:57–12:25:18 UT

12:22:35 UT · 40 ms 12:20:57 UT · 40 ms · over-exposed 12:25:18 UT · 50 ms · over-exposed 12:23:47 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.