Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 14 February 2023

‹ 13.02.2023 2023 16.02.2023 ›

Photosphere sunspot drawing and RDS evaluation

14.02.2023 photosphere drawing

High-resolution scan (3235 px)

Time
08:20 UT
Observer
Talar YONTAN
g
14
f
72
R
212
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DAI – 7Group 1 · DAI – 7 Group 2 · EHI – 9Group 2 · EHI – 9 Group 3 · HS_ – 2Group 3 · HS_ – 2 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · AX_ – 2Group 5 · AX_ – 2 Group 6 · AX_ – 2Group 6 · AX_ – 2 Group 7 · AX_ – 3Group 7 · AX_ – 3 Group 8 · DHC – 25Group 8 · DHC – 25 Group 9 · DAI – 10Group 9 · DAI – 10 Group 10 · AX_ – 1Group 10 · AX_ – 1 Group 11 · CHO – 4Group 11 · CHO – 4 Group 12 · AX_ – 3Group 12 · AX_ – 3 Group 13 · HS_ – 1Group 13 · HS_ – 1 Group 14 · AX_ – 2Group 14 · AX_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=14.02.2023
Saat=08:20
Gözlemci=Talar YONTAN
KontrolEden=Burçin TANIK
Durumaçısı=-17.05
Enlemaçısı=-6.78
Boylamaçısı=141.05
Boylamfark=2
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=0.0
Sırano=19655
AyRasatNo=10
RasatÖnceki=13.02.2023
RasatSonraki=16.02.2023

[Leke Grupları]
Grupsayısı=14:8:6
LekeSayısı=72:51:21
RölatifSayı=212:131:81
01=DAI 07 +32.818 +72.110 213.160 80.524 0000 0 +35.302 +74.328 +30.333 +69.892 +31.450 +71.725 +33.803 +72.186
02=EHI 09 +10.884 +62.686 203.736 05.931 0000 0 +13.473 +68.825 +08.296 +56.546 +10.884 +68.625 +11.995 +57.868
03=HS_ 02 +23.557 +22.942 163.992 +0.000 0000 0 +24.540 +24.417 +22.574 +21.466 +23.557 +23.917 +23.557 +21.966
04=AX_ 01 +09.727 +11.548 152.598 -1.000 0000 0 +09.727 +11.548 +09.727 +11.548
05=AX_ 02 +14.984 -17.450 124.500 +0.000 0000 0 +15.474 -16.357 +14.493 -17.732 +14.984 -17.263 +14.984 -17.638
06=AX_ 02 +18.474 -18.760 122.974 +0.000 0000 0 +18.949 -17.607 +17.998 -18.545 +18.474 -18.791 +18.474 -18.729
07=AX_ 03 +21.308 -18.636 122.414 +0.000 0000 0 +21.882 -18.240 +20.733 -19.320 +21.308 -18.596 +21.308 -18.676
08=DHC 25 +11.168 -31.490 110.100 +0.000 0000 0 +12.763 -26.500 +09.574 -36.480 +11.168 -26.250 +11.168 -35.848
09=DAI 10 -21.590 +08.653 149.703 04.651 0000 0 -19.640 +11.948 -22.477 +05.359 -20.563 +11.656 -21.590 +05.559
10=AX_ 01 -07.430 +02.897 143.947 -1.000 0000 0 -07.430 +02.897 -07.430 +02.897
11=CHO 04 -10.747 -04.710 136.340 43.785 0000 0 -08.605 -02.439 -12.889 -06.982 -09.890 -02.844 -12.220 -06.115
12=AX_ 03 -25.111 -12.302 128.748 +0.000 0000 0 -24.480 -11.899 -25.742 -12.704 -25.111 -12.399 -25.111 -12.205
13=HS_ 01 -12.807 -20.940 120.110 +0.000 0000 0 -11.434 -19.534 -14.181 -22.347 -12.807 -20.340 -12.807 -21.847
14=AX_ 02 -03.245 -41.343 099.707 +0.000 0000 0 -02.504 -40.620 -03.986 -42.670 -03.245 -40.818 -03.245 -41.868
20230214.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 →

2023/20230214_ty · TY · 5 frames · 107.1 MB · 08:28:33–08:32:31 UT

08:28:33 UT · 30 ms 08:32:31 UT · 30 ms 08:29:22 UT · 70 ms 08:31:01 UT · 70 ms 08:30:09 UT · 30 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.