Images 22.02.2024 · Istanbul University Observatory Solar Observations

Solar Images Thursday, 22 February 2024

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 07:45 UT
Observer: K.YELKENCİ=S.F.
g: 2
f: 33
R: 53
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 3

Group 2 · EAC – 30

RDS data file (.gzd)

[Gözlem]
Tarih=22.02.2024
Saat=07:45
Gözlemci=K.YELKENCİ=S.F.
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=-19.52
Enlemaçısı=-7.07
Boylamaçısı=258.46
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.6
Sırano=19921
AyRasatNo=13
RasatÖnceki=21.02.2024
RasatSonraki=23.02.2024

[Leke Grupları]
Grupsayısı=2:2:0
LekeSayısı=33:33:0
RölatifSayı=53:53:0
01=HS_ 03 +26.481 +20.553 279.130 +0.000 0000 0 +27.492 +21.789 +25.471 +19.317 +26.481 +21.289 +26.481 +19.817
02=EAC 30 +17.948 -37.929 220.531 18.151 0000 0 +20.658 -29.957 +15.238 -45.901 +20.458 -30.157 +15.438 -45.701

20240222.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 →

2024/20240222_ky · KY · 14 frames · 299.9 MB · 08:25:08–08:31:38 UT

08:25:08 UT · 30 ms