Images 20.07.2021 · Istanbul University Observatory Solar Observations

Solar Images Tuesday, 20 July 2021

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3229 px)

Time: 10:05 UT
Observer: Ergün EGE
g: 2
f: 7
R: 27
Seeing: 4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CAI – 5

Group 2 · AX_ – 2

RDS data file (.gzd)

[Gözlem]
Tarih=20.07.2021
Saat=10:05
Gözlemci=Ergün EGE
KontrolEden=Olcay PLEVNE
Durumaçısı=6.06
Enlemaçısı=4.83
Boylamaçısı=154.36
Boylamfark=1
GKalite=4
GDurum=
Kuzeyaçısı=-0.7
Sırano=19221
AyRasatNo=19
RasatÖnceki=19.07.2021
RasatSonraki=21.07.2021

[Leke Grupları]
Grupsayısı=2:2:0
LekeSayısı=7:7:0
RölatifSayı=27:27:0
01=CAI 05 +26.870 +43.492 197.852 +0.000 0000 0 +27.593 +46.566 +24.582 +40.419 +26.870 +46.366 +26.870 +40.619
02=AX_ 02 +24.161 -69.540 085.306 +0.000 0000 0 +24.799 -66.990 +23.524 -71.119 +24.161 -67.976 +24.161 -71.104

20210720.gzd

Chromosphere (H-α) FITS frames

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 →

2021/20210720_ee · EE · 9 frames · 192.8 MB · 10:04:54–10:33:31 UT

10:04:54 UT · 40 ms