Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 21 December 2021

‹ 19.12.2021 2021 22.12.2021 ›

Photosphere sunspot drawing and RDS evaluation

21.12.2021 photosphere drawing

High-resolution scan (3232 px)

Time
09:27 UT
Observer
Talar YONTAN
g
10
f
60
R
160
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 3Group 1 · AX_ – 3 Group 2 · HR_ – 2Group 2 · HR_ – 2 Group 3 · BXO – 4Group 3 · BXO – 4 Group 4 · HS_ – 8Group 4 · HS_ – 8 Group 5 · CAI – 7Group 5 · CAI – 7 Group 6 · CAI – 26Group 6 · CAI – 26 Group 7 · HS_ – 4Group 7 · HS_ – 4 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · AX_ – 4Group 9 · AX_ – 4 Group 10 · HS_ – 1Group 10 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=21.12.2021
Saat=09:27
Gözlemci=Talar YONTAN
KontrolEden=Süleyman FİŞEK
Durumaçısı=7.17
Enlemaçısı=-1.71
Boylamaçısı=282.26
Boylamfark=1
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=0.0
Sırano=19343
AyRasatNo=12
RasatÖnceki=19.12.2021
RasatSonraki=22.12.2021

[Leke Grupları]
Grupsayısı=10:3:7
LekeSayısı=60:9:51
RölatifSayı=160:39:121
01=AX_ 03 +15.119 +68.737 350.997 +0.000 0000 0 +15.786 +69.843 +14.452 +67.631 +15.119 +69.343 +15.119 +68.131
02=HR_ 02 +20.869 -10.354 271.906 +0.000 0000 0 +21.284 -09.916 +20.454 -10.792 +20.869 -10.416 +20.869 -10.292
03=BXO 04 +16.512 -46.576 235.684 16.403 0000 0 +17.555 -43.989 +15.468 -49.164 +15.826 -44.349 +17.136 -48.804
04=HS_ 08 -18.580 +31.410 313.301 +0.000 0000 0 -16.395 +32.590 -19.721 +29.492 -18.580 +32.459 -18.580 +30.361
05=CAI 07 -20.919 +26.255 308.515 09.412 0000 0 -19.590 +29.595 -22.248 +22.915 -21.953 +29.368 -20.919 +23.115
06=CAI 26 -18.170 +15.200 297.280 35.928 0000 0 -14.721 +17.530 -21.619 +12.511 -19.768 +16.775 -16.906 +12.818
07=HS_ 04 -19.750 +02.693 284.953 +0.000 0000 0 -18.798 +04.200 -20.702 +01.186 -19.750 +03.700 -19.750 +01.686
08=AX_ 01 -26.938 -28.778 253.482 -1.000 0000 0 -26.938 -28.778 -26.938 -28.778
09=AX_ 04 -16.264 -30.768 251.492 +0.000 0000 0 -15.523 -29.373 -17.500 -32.163 -16.264 -29.873 -16.264 -31.663
10=HS_ 01 -11.690 -49.540 232.720 +0.000 0000 0 -10.332 -48.487 -11.806 -50.592 -11.690 -48.987 -11.690 -50.930
20211221.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 →

2021/20211221_aga · AGA · 2 frames · 42.9 MB · 11:18:11–11:58:02 UT

11:58:02 UT · 40 ms 11:18:11 UT · 40 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.