Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 18 June 2023

‹ 17.06.2023 2023 19.06.2023 ›

Photosphere sunspot drawing and RDS evaluation

18.06.2023 photosphere drawing

High-resolution scan (3230 px)

Time
09:20 UT
Observer
Hikmet ÇAKMAK
g
10
f
63
R
163
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · DAI – 8Group 3 · DAI – 8 Group 4 · ?__ – 3Group 4 · ?__ – 3 Group 5 · HR_ – 1Group 5 · HR_ – 1 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · EAI – 20Group 7 · EAI – 20 Group 8 · EAC – 23Group 8 · EAC – 23 Group 9 · AX_ – 3Group 9 · AX_ – 3 Group 10 · HS_ – 1Group 10 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=18.06.2023
Saat=09:20
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Ergün EGE
Durumaçısı=-8.46
Enlemaçısı=1.36
Boylamaçısı=303.21
Boylamfark=1
GKalite=3
GDurum=G.T , B.A , H.S
Kuzeyaçısı=-0.5
Sırano=19738
AyRasatNo=16
RasatÖnceki=17.06.2023
RasatSonraki=19.06.2023

[Leke Grupları]
Grupsayısı=10:4:6
LekeSayısı=63:14:49
RölatifSayı=163:54:109
01=AX_ 02 +16.863 +35.160 338.226 +0.000 0000 0 +17.166 +35.497 +16.559 +34.535 +16.863 +35.141 +16.863 +35.179
02=AX_ 01 +15.715 -23.100 280.209 -1.000 0000 0 +15.715 -23.100 +15.715 -23.100
03=DAI 08 +11.466 -40.402 262.808 06.802 0000 0 +12.757 -35.232 +10.174 -45.572 +10.990 -36.476 +12.110 -45.690
04=?__ 03 +22.609 -68.821 234.389 +0.000 0000 0 +23.659 -65.614 +21.559 -72.280 +22.609 -65.988 +22.609 -71.654
05=HR_ 01 -22.917 +70.376 013.586 +0.000 0000 0 -22.448 +71.115 -23.386 +69.638 -22.917 +70.615 -22.917 +70.137
06=AX_ 01 -09.878 +59.547 002.757 -1.000 0000 0 -09.878 +59.547 -09.878 +59.547
07=EAI 20 -10.272 +08.475 311.685 10.917 0000 0 -08.493 +13.844 -12.510 +03.106 -09.638 +12.890 -11.465 +03.368
08=EAC 23 -14.400 -19.540 284.156 06.642 0000 0 -12.338 -12.363 -15.741 -25.745 -14.707 -13.981 -13.395 -25.321
09=AX_ 03 -21.144 -27.801 275.409 +0.000 0000 0 -20.770 -27.148 -21.519 -28.454 -21.144 -27.648 -21.144 -27.954
10=HS_ 01 -19.197 -66.400 237.170 +0.000 0000 0 -18.540 -64.809 -20.339 -67.270 -19.197 -65.670 -19.197 -67.131
20230618.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 →

2023/20230618_hc · HC · 3 frames · 64.3 MB · 09:24:48–09:34:40 UT

09:24:48 UT · 30 ms 09:26:39 UT · 30 ms 09:34:40 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.