Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 21 November 2021

‹ 20.11.2021 2021 22.11.2021 ›

Photosphere sunspot drawing and RDS evaluation

21.11.2021 photosphere drawing

High-resolution scan (3230 px)

Time
09:32 UT
Observer
Ergün EGE
g
2
f
2
R
22
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · AX_ – 1Group 2 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=21.11.2021
Saat=09:32
Gözlemci=Ergün EGE
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=19.43
Enlemaçısı=2.09
Boylamaçısı=317.54
Boylamfark=1
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.5
Sırano=19326
AyRasatNo=14
RasatÖnceki=20.11.2021
RasatSonraki=22.11.2021

[Leke Grupları]
Grupsayısı=2:1:1
LekeSayısı=2:1:1
RölatifSayı=22:11:11
01=AX_ 01 +15.659 -01.810 316.459 +0.000 0000 0 +16.900 -00.679 +15.227 -01.483 +15.659 -01.908 +15.659 -01.712
02=AX_ 01 -17.170 +11.810 329.350 +0.000 0000 0 -16.730 +12.890 -17.304 +11.531 -17.170 +11.990 -17.170 +11.631
20211121.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 →

2021/20211121_ee · EE · 8 frames · 171.4 MB · 09:27:32–09:46:44 UT

09:46:44 UT · 40 ms 09:38:20 UT · 40 ms 09:27:32 UT · 40 ms 09:45:59 UT · 50 ms · over-exposed 09:28:35 UT · 50 ms · over-exposed 09:45:06 UT · 60 ms · over-exposed 09:37:35 UT · 60 ms · over-exposed 09:35:41 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.