Images 12.07.2021 · Istanbul University Observatory Solar Observations

Solar Images Monday, 12 July 2021

‹ 11.07.2021 2021 13.07.2021 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 08:35 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 · HR_ – 1

Group 2 · AX_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=12.07.2021
Saat=08:35
Gözlemci=Ergün EGE
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=2.51
Enlemaçısı=4.06
Boylamaçısı=261.05
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19213
AyRasatNo=11
RasatÖnceki=11.07.2021
RasatSonraki=13.07.2021

[Leke Grupları]
Grupsayısı=2:1:1
LekeSayısı=2:1:1
RölatifSayı=22:11:11
01=HR_ 01 +23.422 -58.209 202.841 +0.000 0000 0 +24.670 -57.536 +22.778 -58.882 +23.422 -58.360 +23.422 -58.382
02=AX_ 01 -17.449 -25.810 235.969 +0.000 0000 0 -17.137 -24.754 -17.762 -25.407 -17.449 -25.983 -17.449 -25.636

20210712.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 →

2021/20210712_ee · EE · 9 frames · 192.8 MB · 08:38:57–09:01:01 UT

08:45:43 UT · 40 ms