Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 19 August 2023

‹ 18.08.2023 2023 20.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

19.08.2023 photosphere drawing

High-resolution scan (3216 px)

Time
12:12 UT
Observer
Başar COŞKUNOĞLU
g
8
f
32
R
112
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 4Group 1 · AX_ – 4 Group 2 · CSI – 13Group 2 · CSI – 13 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · AX_ – 2Group 4 · AX_ – 2 Group 5 · HS_ – 2Group 5 · HS_ – 2 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · DSO – 7Group 7 · DSO – 7 Group 8 · AX_ – 2Group 8 · AX_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=19.08.2023
Saat=12:12
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=17.36
Enlemaçısı=6.82
Boylamaçısı=201.38
Boylamfark=0
GKalite=4
GDurum=
Kuzeyaçısı=0.1
Sırano=19796
AyRasatNo=17
RasatÖnceki=18.08.2023
RasatSonraki=20.08.2023

[Leke Grupları]
Grupsayısı=8:6:2
LekeSayısı=32:23:9
RölatifSayı=112:83:29
01=AX_ 04 +22.200 +47.805 249.185 +0.000 0000 0 +23.165 +48.886 +20.840 +46.724 +00.000 +00.000 +00.000 +00.000
02=CSI 13 +27.416 +39.980 241.360 +0.000 0000 0 +28.678 +45.884 +26.153 +34.770 +27.416 +45.684 +27.416 +34.277
03=HS_ 01 +09.328 -14.665 186.715 +0.000 0000 0 +10.184 -13.343 +08.472 -15.986 +09.328 -13.844 +09.328 -15.486
04=AX_ 02 +08.849 -25.112 176.268 +0.000 0000 0 +09.324 -24.873 +08.374 -25.352 +08.849 -25.372 +08.849 -24.851
05=HS_ 02 +12.718 -32.606 168.773 +0.000 0000 0 +13.425 -31.790 +12.100 -33.423 +12.718 -32.289 +12.718 -32.923
06=HS_ 01 +29.229 -67.469 133.911 +0.000 0000 0 +30.980 -66.557 +28.360 -68.381 +29.229 -67.570 +29.229 -67.881
07=DSO 07 -17.168 +21.807 223.187 +0.000 0000 0 -16.138 +24.952 -18.197 +18.662 -17.168 +24.752 -17.168 +18.862
08=AX_ 02 -08.874 -02.704 198.676 -1.000 0000 0 -08.874 -02.704 -08.874 -02.704
20230819.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 →

2023/20230819_bc · BC · 6 frames · 128.6 MB · 11:42:59–11:47:39 UT

11:44:26 UT · 30 ms 11:42:59 UT · 30 ms 11:45:06 UT · 30 ms 11:45:47 UT · 60 ms · over-exposed 11:46:37 UT · 60 ms · over-exposed 11:47:39 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.