Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 24 December 2021

‹ 23.12.2021 2021 25.12.2021 ›

Photosphere sunspot drawing and RDS evaluation

24.12.2021 photosphere drawing

High-resolution scan (3230 px)

Time
07:40 UT
Observer
Ergün EGE
g
8
f
40
R
120
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 2Group 1 · BXO – 2 Group 2 · DSI – 6Group 2 · DSI – 6 Group 3 · FSI – 14Group 3 · FSI – 14 Group 4 · BXO – 2Group 4 · BXO – 2 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · CRI – 7Group 7 · CRI – 7 Group 8 · DSI – 7Group 8 · DSI – 7
RDS data file (.gzd) 
[Gözlem]
Tarih=24.12.2021
Saat=07:40
Gözlemci=Ergün EGE
KontrolEden=Oğuzhan ÇAKIR
Durumaçısı=5.77
Enlemaçısı=-2.07
Boylamaçısı=243.51
Boylamfark=2
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=-0.4
Sırano=19346
AyRasatNo=15
RasatÖnceki=23.12.2021
RasatSonraki=25.12.2021

[Leke Grupları]
Grupsayısı=8:2:6
LekeSayısı=40:8:32
RölatifSayı=120:28:92
01=BXO 02 +15.413 -07.422 236.880 +0.000 0000 0 +16.593 -03.930 +14.232 -10.914 +15.413 -04.130 +15.413 -10.714
02=DSI 06 +19.633 -34.445 209.650 +0.000 0000 0 +20.521 -29.660 +18.745 -39.231 +19.633 -29.860 +19.633 -39.310
03=FSI 14 -20.942 +70.294 313.804 +0.000 0000 0 -18.212 +78.510 -23.672 +62.770 -20.942 +78.310 -20.942 +62.277
04=BXO 02 -19.540 +56.825 300.335 +0.000 0000 0 -17.980 +59.815 -20.128 +53.834 -19.540 +59.615 -19.540 +54.340
05=AX_ 01 -21.633 +43.810 286.591 +0.000 0000 0 -21.352 +43.614 -21.913 +42.549 -21.633 +43.843 -21.633 +43.778
06=AX_ 01 -11.806 -10.474 233.360 +0.000 0000 0 -11.308 -10.103 -12.304 -10.845 -11.806 -10.603 -11.806 -10.345
07=CRI 07 -26.792 -15.835 227.675 +0.000 0000 0 -25.222 -11.981 -28.361 -19.689 -26.792 -12.181 -26.792 -19.489
08=DSI 07 -15.871 -52.931 190.579 +0.000 0000 0 -13.925 -46.923 -17.816 -58.938 -15.871 -47.123 -15.871 -58.738
20211224.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 →

2021/20211224_ee · EE · 5 frames · 107.1 MB · 07:44:56–08:13:57 UT

08:13:57 UT · 40 ms 07:48:23 UT · 40 ms 07:50:35 UT · 40 ms 07:49:46 UT · 50 ms · over-exposed 07:44:56 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.