Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 16 February 2023

‹ 14.02.2023 2023 17.02.2023 ›

Photosphere sunspot drawing and RDS evaluation

16.02.2023 photosphere drawing

High-resolution scan (3234 px)

Time
07:50 UT
Observer
Burçin TANIK
g
9
f
35
R
125
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HH_ – 1Group 1 · HH_ – 1 Group 2 · EKC – 16Group 2 · EKC – 16 Group 3 · ?__ – 1Group 3 · ?__ – 1 Group 4 · BXI – 5Group 4 · BXI – 5 Group 5 · BXI – 7Group 5 · BXI – 7 Group 6 · HH_ – 1Group 6 · HH_ – 1 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · HH_ – 2Group 8 · HH_ – 2 Group 9 · AX_ – 1Group 9 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=16.02.2023
Saat=07:50
Gözlemci=Burçin TANIK
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=-17.72
Enlemaçısı=-6.86
Boylamaçısı=114.99
Boylamfark=2
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.9
Sırano=19656
AyRasatNo=11
RasatÖnceki=14.02.2023
RasatSonraki=17.02.2023

[Leke Grupları]
Grupsayısı=9:3:6
LekeSayısı=35:18:17
RölatifSayı=125:48:77
01=HH_ 01 +23.702 +46.644 161.634 +0.000 0000 0 +24.801 +48.120 +22.602 +45.277 +23.702 +47.566 +23.702 +45.722
02=EKC 16 +09.496 -05.714 109.276 07.392 0000 0 +11.284 -00.451 +07.708 -10.977 +09.938 -02.308 +08.960 -09.865
03=?__ 01 +11.298 -81.577 033.413 +0.000 0000 0 +11.980 -79.834 +10.616 -83.319 +11.298 -80.335 +11.298 -82.820
04=BXI 05 -21.719 +33.395 148.385 09.608 0000 0 -20.900 +36.513 -22.538 +30.276 -21.413 +35.468 -22.137 +31.192
05=BXI 07 -08.663 +26.468 141.458 10.160 0000 0 -07.392 +29.831 -09.935 +23.105 -08.427 +28.515 -09.174 +24.346
06=HH_ 01 -12.513 +20.594 135.584 +0.000 0000 0 -11.400 +21.962 -13.986 +19.226 -12.513 +21.462 -12.513 +19.726
07=AX_ 01 -12.970 +05.766 120.756 -1.000 0000 0 -12.970 +05.766 -12.970 +05.766
08=HH_ 02 -14.910 +04.180 119.170 +0.000 0000 0 -12.740 +05.877 -15.442 +02.484 -14.910 +05.376 -14.910 +02.984
09=AX_ 01 -09.640 +01.758 116.748 -1.000 0000 0 -09.640 +01.758 -09.640 +01.758
20230216.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 →

2023/20230216 _bto · · 4 frames · 85.7 MB · 07:52:11–07:55:52 UT

07:52:11 UT · 80 ms · over-exposed 07:53:48 UT · 40 ms 07:55:52 UT · 30 ms 07:54:45 UT · 90 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.