Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 11 November 2021

‹ 10.11.2021 2021 12.11.2021 ›

Photosphere sunspot drawing and RDS evaluation

11.11.2021 photosphere drawing

High-resolution scan (3231 px)

Time
07:40 UT
Observer
Süleyman FİŞEK
g
4
f
10
R
50
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HH_ – 1Group 1 · HH_ – 1 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · DRI – 5Group 3 · DRI – 5 Group 4 · HS_ – 3Group 4 · HS_ – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=11.11.2021
Saat=07:40
Gözlemci=Süleyman FİŞEK
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=22.31
Enlemaçısı=3.28
Boylamaçısı=90.39
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.5
Sırano=19320
AyRasatNo=8
RasatÖnceki=10.11.2021
RasatSonraki=12.11.2021

[Leke Grupları]
Grupsayısı=4:3:1
LekeSayısı=10:7:3
RölatifSayı=50:37:13
01=HH_ 01 +17.422 +64.970 154.487 +0.000 0000 0 +18.449 +65.551 +16.395 +62.644 +17.422 +65.924 +17.422 +64.170
02=AX_ 01 +17.421 -04.231 086.159 -1.000 0000 0 +17.421 -04.231 +17.421 -04.231
03=DRI 05 +23.760 -18.919 071.471 02.822 0000 0 +25.546 -15.898 +21.974 -21.939 +22.863 -16.490 +22.628 -21.255
04=HS_ 03 -26.319 +00.519 090.909 +0.000 0000 0 -25.178 +01.760 -27.459 -00.722 -26.319 +01.260 -26.319 -00.222
20211111.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 →

2021/20211111_sf · SF · 2 frames · 42.9 MB · 08:02:57–08:04:50 UT

08:02:57 UT · 40 ms 08:04:50 UT · 65 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.