Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 18 August 2024

‹ 17.08.2024 2024 19.08.2024 ›

Photosphere sunspot drawing and RDS evaluation

18.08.2024 photosphere drawing

High-resolution scan (3228 px)

Time
12:00 UT
Observer
Burçin TANIK
g
10
f
93
R
193
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DKC – 23Group 1 · DKC – 23 Group 2 · BXI – 12Group 2 · BXI – 12 Group 3 · CAO – 10Group 3 · CAO – 10 Group 4 · DSI – 6Group 4 · DSI – 6 Group 5 · CRI – 14Group 5 · CRI – 14 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · EHC – 18Group 8 · EHC – 18 Group 9 · HH_ – 1Group 9 · HH_ – 1 Group 10 · ?__ – 6Group 10 · ?__ – 6
RDS data file (.gzd) 
[Gözlem]
Tarih=18.08.2024
Saat=12:00
Gözlemci=Burçin TANIK
KontrolEden=Burçin TANIK
Durumaçısı=17.28
Enlemaçısı=6.81
Boylamaçısı=63.94
Boylamfark=0
GKalite=3
GDurum=G.T
Kuzeyaçısı=0.2
Sırano=20066
AyRasatNo=18
RasatÖnceki=17.08.2024
RasatSonraki=19.08.2024

[Leke Grupları]
Grupsayısı=10:4:6
LekeSayısı=93:51:42
RölatifSayı=193:91:102
01=DKC 23 +16.805 +50.960 114.900 +0.000 0000 0 +21.200 +55.670 +12.590 +46.852 +16.805 +54.867 +16.805 +47.520
02=BXI 12 +27.868 +19.468 083.408 38.501 0000 0 +30.389 +23.700 +25.347 +15.866 +26.388 +21.310 +29.510 +17.990
03=CAO 10 +18.923 -24.210 039.919 23.230 0000 0 +20.560 -20.985 +17.285 -27.580 +18.740 -21.986 +19.941 -26.342
04=DSI 06 +21.904 -40.861 023.790 10.496 0000 0 +23.284 -38.354 +20.523 -43.368 +22.145 -39.431 +21.479 -43.320
05=CRI 14 -13.183 +41.214 105.154 26.968 0000 0 -09.762 +45.942 -16.604 +36.486 -11.855 +43.597 -14.485 +38.416
06=HS_ 01 -06.830 +26.484 090.424 +0.000 0000 0 -05.756 +27.320 -07.903 +25.648 -06.830 +26.820 -06.830 +26.148
07=AX_ 02 -16.751 -27.553 036.387 -1.000 0000 0 -16.751 -27.553 -16.751 -27.553
08=EHC 18 -10.753 -40.251 023.689 +0.000 0000 0 -08.144 -34.718 -13.362 -45.783 -10.753 -34.918 -10.753 -45.583
09=HH_ 01 -15.900 -54.473 009.467 +0.000 0000 0 -14.162 -52.424 -17.638 -56.522 -15.900 -52.924 -15.900 -56.220
10=?__ 06 -02.771 -77.691 346.249 +0.000 0000 0 -00.244 -76.495 -05.298 -78.888 -02.771 -76.994 -02.771 -78.388
20240818.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 →

2024/20240818_bto · BTO · 4 frames · 85.7 MB · 12:08:13–12:13:05 UT

12:11:08 UT · 20 ms 12:13:05 UT · 30 ms 12:12:03 UT · 50 ms · over-exposed 12:08:13 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.