Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 5 December 2021

‹ 03.12.2021 2021 06.12.2021 ›

Photosphere sunspot drawing and RDS evaluation

05.12.2021 photosphere drawing

High-resolution scan (3236 px)

Time
10:10 UT
Observer
Hikmet ÇAKMAK
g
4
f
6
R
46
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · AX_ – 3Group 2 · AX_ – 3 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · AX_ – 1Group 4 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=5.12.2021
Saat=10:10
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Ergün EGE
Durumaçısı=14.27
Enlemaçısı=0.33
Boylamaçısı=132.68
Boylamfark=1
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.4
Sırano=19335
AyRasatNo=4
RasatÖnceki=03.12.2021
RasatSonraki=06.12.2021

[Leke Grupları]
Grupsayısı=4:1:3
LekeSayısı=6:1:5
RölatifSayı=46:11:35
01=AX_ 01 +13.480 +66.698 199.378 -1.000 0000 0 +13.480 +66.698 +13.480 +66.698
02=AX_ 03 -17.130 +15.814 148.494 +0.000 0000 0 -16.474 +16.913 -17.553 +14.716 -17.130 +16.413 -17.130 +15.215
03=AX_ 01 -25.187 -50.571 082.109 -1.000 0000 0 -25.187 -50.571 -25.187 -50.571
04=AX_ 01 -28.900 -54.913 077.767 -1.000 0000 0 -28.900 -54.913 -28.900 -54.913
20211205.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 →

2021/20211205_hc · HC · 6 frames · 128.6 MB · 10:11:23–10:27:20 UT

10:19:01 UT · 40 ms 10:27:20 UT · 40 ms 10:12:30 UT · 40 ms 10:26:24 UT · 70 ms · over-exposed 10:19:53 UT · 70 ms · over-exposed 10:11:23 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.