Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 10 February 2023

‹ 08.02.2023 2023 11.02.2023 ›

Photosphere sunspot drawing and RDS evaluation

10.02.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:50 UT
Observer
Olcay PLEVNE
g
11
f
103
R
213
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 5Group 1 · BXI – 5 Group 2 · FKC – 39Group 2 · FKC – 39 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · DKI – 19Group 4 · DKI – 19 Group 5 · AX_ – 2Group 5 · AX_ – 2 Group 6 · HS_ – 5Group 6 · HS_ – 5 Group 7 · AX_ – 3Group 7 · AX_ – 3 Group 8 · DSI – 2Group 8 · DSI – 2 Group 9 · BXI – 3Group 9 · BXI – 3 Group 10 · FKI – 21Group 10 · FKI – 21 Group 11 · HS_ – 2Group 11 · HS_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=10.02.2023
Saat=08:50
Gözlemci=Olcay PLEVNE
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=-15.65
Enlemaçısı=-6.58
Boylamaçısı=193.44
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19651
AyRasatNo=6
RasatÖnceki=08.02.2023
RasatSonraki=11.02.2023

[Leke Grupları]
Grupsayısı=11:9:2
LekeSayısı=103:80:23
RölatifSayı=213:170:43
01=BXI 05 +07.670 +54.482 247.922 +0.000 0000 0 +07.986 +56.220 +06.148 +52.744 +07.670 +56.200 +07.670 +52.944
02=FKC 39 +29.431 +28.209 221.649 +0.000 0000 0 +33.151 +36.368 +25.710 +20.510 +29.431 +36.168 +29.431 +20.251
03=AX_ 02 +20.120 +27.297 220.737 -1.000 0000 0 +20.120 +27.297 +20.120 +27.297
04=DKI 19 +10.739 +10.611 204.510 +0.000 0000 0 +12.715 +15.609 +08.763 +05.612 +10.739 +15.409 +10.739 +05.812
05=AX_ 02 +21.443 -12.172 181.268 -1.000 0000 0 +21.443 -12.172 +21.443 -12.172
06=HS_ 05 +23.572 -27.875 165.565 +0.000 0000 0 +25.293 -25.733 +21.852 -30.170 +23.572 -26.156 +23.572 -29.594
07=AX_ 03 +11.272 -41.905 151.535 -1.000 0000 0 +11.272 -41.905 +11.272 -41.905
08=DSI 02 +15.463 -72.448 120.993 +0.000 0000 0 +17.410 -69.727 +13.886 -75.168 +15.463 -69.927 +15.463 -74.968
09=BXI 03 +10.846 -75.199 118.241 +0.000 0000 0 +11.401 -69.650 +10.290 -80.748 +10.846 -70.150 +10.846 -80.248
10=FKI 21 -09.351 -60.442 132.998 +0.000 0000 0 -05.619 -49.982 -13.820 -70.902 -09.351 -50.182 -09.351 -70.702
11=HS_ 02 -14.315 -75.421 118.190 +0.000 0000 0 -12.748 -72.963 -15.881 -77.879 -14.315 -73.463 -14.315 -77.379
20230210.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 →

2023/20230210_op · OP · 4 frames · 85.7 MB · 08:46:49–08:53:27 UT

08:50:08 UT · 40 ms 08:46:49 UT · 40 ms · over-exposed 08:51:47 UT · 70 ms · over-exposed 08:53:27 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.