Images 26.10.2021 · Istanbul University Observatory Solar Observations

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 09:10 UT
Observer: Korhan YELKENCİ
g: 6
f: 46
R: 106
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1

Group 2 · CRI – 10

Group 3 · CAI – 5

Group 4 · DAC – 22

Group 5 · AX_ – 1

Group 6 · CRI – 7

RDS data file (.gzd)

[Gözlem]
Tarih=26.10.2021
Saat=09:10
Gözlemci=Korhan YELKENCİ
KontrolEden=Özgecan ÖNALTAŞ
Durumaçısı=25.27
Enlemaçısı=4.93
Boylamaçısı=300.54
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.6
Sırano=19307
AyRasatNo=18
RasatÖnceki=25.10.2021
RasatSonraki=27.10.2021

[Leke Grupları]
Grupsayısı=6:0:6
LekeSayısı=46:0:46
RölatifSayı=106:0:106
01=HS_ 01 -18.592 +31.354 331.894 +0.000 0000 0 -17.470 +32.203 -19.714 +30.505 -18.592 +31.703 -18.592 +31.500
02=CRI 10 -17.918 +14.988 315.528 24.131 0000 0 -16.730 +17.900 -19.106 +12.750 -16.450 +17.864 -18.873 +12.443
03=CAI 05 -23.346 -23.665 276.875 29.996 0000 0 -22.860 -21.506 -24.606 -25.824 -22.286 -21.948 -24.406 -25.624
04=DAC 22 -26.687 -25.690 275.471 37.867 0000 0 -23.271 -20.721 -30.102 -29.418 -23.500 -20.921 -29.902 -29.218
05=AX_ 01 -13.292 -49.650 250.890 -1.000 0000 0 -13.292 -49.650 -13.292 -49.650
06=CRI 07 -23.717 -54.630 245.910 30.329 0000 0 -21.740 -51.392 -25.695 -57.868 -21.951 -51.592 -25.495 -57.668

20211026.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 →

2021/20211026_ky · KY · 21 frames · 449.9 MB · 09:26:14–09:36:27 UT