Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 17 August 2024

‹ 16.08.2024 2024 18.08.2024 ›

Photosphere sunspot drawing and RDS evaluation

17.08.2024 photosphere drawing

High-resolution scan (3229 px)

Time
10:05 UT
Observer
Ergün EGE
g
10
f
60
R
160
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DKC – 12Group 1 · DKC – 12 Group 2 · DRI – 8Group 2 · DRI – 8 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · DRO – 4Group 4 · DRO – 4 Group 5 · CSO – 2Group 5 · CSO – 2 Group 6 · DRI – 17Group 6 · DRI – 17 Group 7 · CSO – 3Group 7 · CSO – 3 Group 8 · AX_ – 2Group 8 · AX_ – 2 Group 9 · DSI – 10Group 9 · DSI – 10 Group 10 · HH_ – 1Group 10 · HH_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=17.08.2024
Saat=10:05
Gözlemci=Ergün EGE
KontrolEden=Burçin TANIK
Durumaçısı=16.93
Enlemaçısı=6.76
Boylamaçısı=78.21
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.4
Sırano=20065
AyRasatNo=17
RasatÖnceki=16.08.2024
RasatSonraki=18.08.2024

[Leke Grupları]
Grupsayısı=10:4:6
LekeSayısı=60:25:35
RölatifSayı=160:65:95
01=DKC 12 +15.724 +35.120 113.330 +0.000 0000 0 +19.420 +38.779 +12.290 +31.461 +15.724 +38.579 +15.724 +31.661
02=DRI 08 +26.640 +04.400 082.250 +0.000 0000 0 +28.676 +07.550 +24.603 +00.531 +26.640 +07.350 +26.640 +00.731
03=AX_ 01 +17.630 -38.854 039.356 +0.000 0000 0 +17.943 -38.575 +17.318 -39.133 +17.630 -39.750 +17.630 -38.633
04=DRO 04 +21.130 -56.457 021.753 +0.000 0000 0 +22.148 -54.929 +19.878 -57.986 +21.130 -55.129 +21.130 -57.786
05=CSO 02 -21.815 +72.396 150.606 +0.000 0000 0 -20.572 +75.377 -23.580 +69.416 -21.815 +75.177 -21.815 +69.616
06=DRI 17 -13.946 +23.297 101.507 +0.000 0000 0 -10.592 +28.709 -17.301 +17.884 -13.946 +28.509 -13.946 +18.840
07=CSO 03 -07.354 +09.284 087.494 +0.000 0000 0 -06.416 +12.596 -08.292 +05.972 -07.354 +12.396 -07.354 +06.172
08=AX_ 02 -17.440 -43.728 034.482 +0.000 0000 0 -17.720 -42.884 -17.809 -44.573 -17.440 -43.383 -17.440 -44.730
09=DSI 10 -11.663 -54.972 023.238 +0.000 0000 0 -09.633 -50.336 -13.693 -59.607 -11.663 -50.536 -11.663 -59.407
10=HH_ 01 -15.985 -69.822 008.388 +0.000 0000 0 -14.145 -67.427 -17.825 -72.218 -15.985 -67.926 -15.985 -71.717
20240817.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 →

2024/20240817_ee · EE · 6 frames · 128.6 MB · 10:09:32–10:26:39 UT

10:19:34 UT · 30 ms 10:10:27 UT · 40 ms · over-exposed 10:09:32 UT · 30 ms 10:25:59 UT · 40 ms · over-exposed 10:13:56 UT · 50 ms · over-exposed 10:26:39 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.