Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 27 October 2021

‹ 26.10.2021 2021 28.10.2021 ›

Photosphere sunspot drawing and RDS evaluation

27.10.2021 photosphere drawing

High-resolution scan (3232 px)

Time
08:00 UT
Observer
Özgecan ÖNALTAŞ
g
6
f
53
R
113
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CSI – 8Group 1 · CSI – 8 Group 2 · HS_ – 1Group 2 · HS_ – 1 Group 3 · CSI – 7Group 3 · CSI – 7 Group 4 · CSI – 4Group 4 · CSI – 4 Group 5 · CSI – 22Group 5 · CSI – 22 Group 6 · BXI – 11Group 6 · BXI – 11
RDS data file (.gzd) 
[Gözlem]
Tarih=27.10.2021
Saat=08:00
Gözlemci=Özgecan ÖNALTAŞ
KontrolEden=Talar YONTAN
Durumaçısı=25.15
Enlemaçısı=4.84
Boylamaçısı=287.99
Boylamfark=2
GKalite=3
GDurum=G.T , B.A , Y.B
Kuzeyaçısı=-0.2
Sırano=19308
AyRasatNo=19
RasatÖnceki=26.10.2021
RasatSonraki=28.10.2021

[Leke Grupları]
Grupsayısı=6:1:5
LekeSayısı=53:8:45
RölatifSayı=113:18:95
01=CSI 08 +17.818 -78.196 209.794 06.119 0000 0 +19.266 -73.819 +16.370 -82.573 +18.154 -75.452 +17.504 -81.526
02=HS_ 01 -18.339 +43.836 331.826 +0.000 0000 0 -17.568 +45.590 -19.110 +42.614 -18.339 +44.824 -18.339 +42.848
03=CSI 07 -17.744 +25.983 313.973 +0.000 0000 0 -17.114 +32.556 -18.374 +25.275 -17.744 +29.124 -17.744 +22.842
04=CSI 04 -23.670 -11.692 276.298 +0.000 0000 0 -22.594 -08.519 -24.746 -14.865 -23.670 -08.719 -23.670 -14.665
05=CSI 22 -27.288 -14.515 273.475 42.202 0000 0 -24.534 -11.890 -30.430 -17.941 -26.641 -13.704 -28.819 -16.108
06=BXI 11 -23.460 -39.965 248.250 19.430 0000 0 -21.759 -36.781 -25.161 -43.149 -22.701 -37.378 -24.301 -41.921
20211027.gzd

Chromosphere (H-α) FITS frames

H-α

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 · 3 frames · 64.3 MB · 08:22:31–08:23:34 UT

2021/20211027_oot · OOT · 2 frames · 10.7 MB · 08:26:01–08:27:46 UT

08:22:31 UT · 70 ms 08:26:01 UT · 40 ms · over-exposed 08:27:46 UT · 60 ms · over-exposed 08:23:03 UT · 50 ms 08:23:34 UT · 30 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.