Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 5 July 2021

‹ 04.07.2021 2021 07.07.2021 ›

Photosphere sunspot drawing and RDS evaluation

05.07.2021 photosphere drawing

High-resolution scan (3229 px)

Time
08:25 UT
Observer
Ergün EGE
g
3
f
12
R
42
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · AX_ – 3Group 2 · AX_ – 3 Group 3 · CKO – 7Group 3 · CKO – 7
RDS data file (.gzd) 
[Gözlem]
Tarih=5.07.2021
Saat=08:25
Gözlemci=Ergün EGE
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=-0.64
Enlemaçısı=3.34
Boylamaçısı=353.78
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19207
AyRasatNo=5
RasatÖnceki=04.07.2021
RasatSonraki=07.07.2021

[Leke Grupları]
Grupsayısı=3:2:1
LekeSayısı=12:5:7
RölatifSayı=42:25:17
01=AX_ 02 +16.686 +10.835 004.615 +0.000 0000 0 +17.348 +11.477 +16.250 +10.193 +16.686 +10.977 +16.686 +10.693
02=AX_ 03 +18.944 -32.982 320.798 +0.000 0000 0 +19.868 -31.450 +18.200 -34.514 +18.944 -31.650 +18.944 -34.314
03=CKO 07 -18.170 +58.292 052.720 +0.000 0000 0 -15.903 +62.359 -20.436 +54.225 -18.170 +62.159 -18.170 +54.425
20210705.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 →

2021/20210705_ee · EE · 7 frames · 150.0 MB · 08:26:56–08:44:36 UT

08:43:01 UT · 30 ms 08:40:40 UT · 40 ms 08:26:56 UT · 60 ms · over-exposed 08:30:21 UT · 70 ms · over-exposed 08:44:36 UT · 80 ms · over-exposed 08:39:28 UT · 80 ms · over-exposed 08:37:27 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.