Images 21.08.2023 · Istanbul University Observatory Solar Observations

Solar Images Monday, 21 August 2023

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3231 px)

Time: 08:35 UT
Observer: Ergün EGE
g: 7
f: 15
R: 85
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1

Group 2 · HS_ – 1

Group 3 · HS_ – 1

Group 4 · HS_ – 1

Group 5 · HA_ – 1

Group 6 · CSI – 7

Group 7 · AX_ – 3

RDS data file (.gzd)

[Gözlem]
Tarih=21.08.2023
Saat=08:35
Gözlemci=Ergün EGE
KontrolEden=Korhan YELKENCİ
Durumaçısı=17.94
Enlemaçısı=6.89
Boylamaçısı=176.94
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19798
AyRasatNo=19
RasatÖnceki=20.08.2023
RasatSonraki=22.08.2023

[Leke Grupları]
Grupsayısı=7:5:2
LekeSayısı=15:5:10
RölatifSayı=85:55:30
01=HS_ 01 +25.581 +68.266 245.206 +0.000 0000 0 +26.407 +69.542 +24.755 +66.990 +25.581 +69.420 +25.581 +67.490
02=HS_ 01 +10.173 +10.368 187.308 +0.000 0000 0 +11.401 +11.507 +08.945 +09.230 +10.173 +11.700 +10.173 +09.729
03=HS_ 01 +13.657 -06.718 170.222 +0.000 0000 0 +14.229 -06.173 +13.850 -07.263 +13.657 -06.673 +13.657 -06.763
04=HS_ 01 +30.619 -41.687 135.253 +0.000 0000 0 +31.146 -41.890 +30.930 -42.285 +30.619 -41.990 +30.619 -41.384
05=HA_ 01 +09.675 -80.979 095.961 +0.000 0000 0 +10.857 -79.142 +08.494 -82.816 +09.675 -79.642 +09.675 -82.316
06=CSI 07 -18.456 +47.137 224.770 +0.000 0000 0 -17.104 +49.918 -19.808 +44.357 -18.456 +49.718 -18.456 +44.557
07=AX_ 03 -12.755 +24.458 201.398 +0.000 0000 0 -11.537 +24.744 -13.974 +24.171 -12.755 +24.245 -12.755 +24.671

20230821.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 →

2023/20230821_ee · EE · 9 frames · 192.8 MB · 08:43:51–08:57:37 UT

08:53:32 UT · 30 ms