Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 15 May 2024

‹ 14.05.2024 2024 16.05.2024 ›

Photosphere sunspot drawing and RDS evaluation

15.05.2024 photosphere drawing

High-resolution scan (3230 px)

Time
10:35 UT
Observer
Burçin TANIK
g
10
f
61
R
161
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · DSI – 11Group 2 · DSI – 11 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · AX_ – 2Group 4 · AX_ – 2 Group 5 · CSO – 6Group 5 · CSO – 6 Group 6 · CSI – 6Group 6 · CSI – 6 Group 7 · CRI – 9Group 7 · CRI – 9 Group 8 · HR_ – 2Group 8 · HR_ – 2 Group 9 · CAI – 10Group 9 · CAI – 10 Group 10 · EHC – 13Group 10 · EHC – 13
RDS data file (.gzd) 
[Gözlem]
Tarih=15.05.2024
Saat=10:35
Gözlemci=Burçin TANIK
KontrolEden=Süleyman FİŞEK
Durumaçısı=-20.71
Enlemaçısı=-2.59
Boylamaçısı=241.65
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.8
Sırano=19978
AyRasatNo=9
RasatÖnceki=14.05.2024
RasatSonraki=16.05.2024

[Leke Grupları]
Grupsayısı=10:5:5
LekeSayısı=61:21:40
RölatifSayı=161:71:90
01=HS_ 01 +27.574 +60.171 301.821 +0.000 0000 0 +28.579 +61.109 +26.569 +59.234 +27.574 +60.609 +27.574 +59.734
02=DSI 11 +20.623 +37.574 279.224 +0.000 0000 0 +22.360 +40.424 +18.885 +34.723 +20.623 +40.224 +20.623 +34.923
03=HS_ 01 +19.895 +09.949 251.599 +0.000 0000 0 +20.533 +10.482 +19.257 +09.416 +19.895 +09.982 +19.895 +09.916
04=AX_ 02 +17.331 -45.406 196.244 +0.000 0000 0 +17.700 -44.715 +16.962 -46.970 +17.331 -44.778 +17.331 -46.330
05=CSO 06 +13.411 -56.640 185.100 +0.000 0000 0 +14.203 -51.148 +12.619 -62.133 +13.411 -51.647 +13.411 -61.632
06=CSI 06 -20.146 +22.953 264.603 23.378 0000 0 -18.229 +25.858 -22.640 +20.480 -19.226 +24.551 -20.975 +20.502
07=CRI 09 -22.851 -02.561 239.890 +0.000 0000 0 -21.677 +00.687 -24.250 -05.809 -22.851 +00.487 -22.851 -05.609
08=HR_ 02 -08.448 -11.108 230.542 +0.000 0000 0 -08.140 -10.693 -08.882 -11.523 -08.448 -11.193 -08.448 -11.230
09=CAI 10 -12.286 -22.869 218.781 08.350 0000 0 -10.536 -18.702 -14.360 -27.360 -12.899 -19.832 -12.100 -26.206
10=EHC 13 -08.122 -44.476 197.174 +0.000 0000 0 -06.279 -38.784 -09.966 -50.167 -08.122 -38.984 -08.122 -49.967
20240515.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 →

2024/20240515_bto · BTO · 6 frames · 128.6 MB · 10:40:18–10:44:54 UT

10:44:54 UT · 40 ms 10:41:29 UT · 30 ms 10:44:05 UT · 30 ms 10:40:18 UT · 60 ms · over-exposed 10:43:13 UT · 60 ms · over-exposed 10:42:18 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.