Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 16 July 2023

‹ 15.07.2023 2023 17.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

16.07.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:00 UT
Observer
Burçin TANIK
g
10
f
89
R
189
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 3Group 1 · BXI – 3 Group 2 · AX_ – 5Group 2 · AX_ – 5 Group 3 · AX_ – 6Group 3 · AX_ – 6 Group 4 · FKC – 26Group 4 · FKC – 26 Group 5 · EKC – 28Group 5 · EKC – 28 Group 6 · BXO – 3Group 6 · BXO – 3 Group 7 · EKI – 11Group 7 · EKI – 11 Group 8 · CSI – 3Group 8 · CSI – 3 Group 9 · AX_ – 1Group 9 · AX_ – 1 Group 10 · HR_ – 3Group 10 · HR_ – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=16.07.2023
Saat=08:00
Gözlemci=Burçin TANIK
KontrolEden=Ergün EGE
Durumaçısı=4.07
Enlemaçısı=4.4
Boylamaçısı=293.35
Boylamfark=2
GKalite=3
GDurum=
Kuzeyaçısı=0.0
Sırano=19764
AyRasatNo=15
RasatÖnceki=15.07.2023
RasatSonraki=17.07.2023

[Leke Grupları]
Grupsayısı=10:6:4
LekeSayısı=89:71:18
RölatifSayı=189:131:58
01=BXI 03 +12.435 +76.577 009.927 +0.000 0000 0 +12.863 +78.168 +12.700 +74.986 +12.435 +77.668 +12.435 +75.486
02=AX_ 05 +13.447 +28.498 321.848 +0.000 0000 0 +14.259 +29.935 +12.635 +27.610 +00.000 +00.000 +00.000 +00.000
03=AX_ 06 +19.218 +21.743 315.930 +0.000 0000 0 +20.515 +22.858 +17.920 +20.629 +00.000 +00.000 +00.000 +00.000
04=FKC 26 +22.492 -23.954 269.396 19.669 0000 0 +26.770 -15.426 +18.908 -32.482 +21.180 -16.899 +25.106 -27.969
05=EKC 28 +07.547 -50.640 243.286 25.208 0000 0 +11.500 -44.567 +04.430 -55.561 +04.995 -45.904 +08.842 -54.117
06=BXO 03 +23.925 -65.616 227.734 +0.000 0000 0 +24.133 -63.416 +23.716 -67.815 +23.925 -63.916 +23.925 -67.315
07=EKI 11 -22.231 +47.510 340.860 20.440 0000 0 -18.751 +53.179 -25.710 +41.842 -20.810 +51.560 -23.864 +43.331
08=CSI 03 -15.900 -05.126 288.224 +0.000 0000 0 -14.222 -03.448 -15.796 -06.804 -15.900 -03.948 -15.900 -06.304
09=AX_ 01 -22.565 -13.343 280.700 -1.000 0000 0 -22.565 -13.343 -22.565 -13.343
10=HR_ 03 -07.778 -51.479 241.871 +0.000 0000 0 -07.780 -50.671 -08.479 -52.287 -07.778 -51.171 -07.778 -51.787
20230716.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 →

2023/20230716_bto · BTO · 6 frames · 128.6 MB · 08:49:50–08:56:44 UT

08:54:48 UT · 20 ms 08:55:51 UT · 30 ms 08:49:50 UT · 30 ms 08:56:44 UT · 50 ms · over-exposed 08:53:43 UT · 50 ms · over-exposed 08:51:59 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.