Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 22 August 2023

‹ 21.08.2023 2023 23.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

22.08.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:40 UT
Observer
Korhan YELKENCİ
g
10
f
32
R
132
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · CAI – 4Group 2 · CAI – 4 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · CAI – 4Group 5 · CAI – 4 Group 6 · BXI – 3Group 6 · BXI – 3 Group 7 · AX_ – 3Group 7 · AX_ – 3 Group 8 · AX_ – 5Group 8 · AX_ – 5 Group 9 · BXI – 9Group 9 · BXI – 9 Group 10 · HS_ – 1Group 10 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=22.08.2023
Saat=08:40
Gözlemci=Korhan YELKENCİ
KontrolEden=Olcay PLEVNE
Durumaçısı=18.25
Enlemaçısı=6.93
Boylamaçısı=163.68
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19799
AyRasatNo=20
RasatÖnceki=21.08.2023
RasatSonraki=23.08.2023

[Leke Grupları]
Grupsayısı=10:5:5
LekeSayısı=32:11:21
RölatifSayı=132:61:71
01=HS_ 01 +26.300 +80.687 244.367 +0.000 0000 0 +27.388 +83.666 +25.213 +77.709 +26.300 +83.165 +26.300 +78.208
02=CAI 04 +10.850 +23.952 187.632 +0.000 0000 0 +13.395 +25.408 +08.305 +22.496 +10.850 +25.208 +10.850 +22.696
03=HS_ 01 +13.815 +06.152 169.832 +0.000 0000 0 +14.594 +06.921 +13.370 +05.382 +13.815 +06.422 +13.815 +05.882
04=HS_ 01 +30.309 -29.520 134.160 +0.000 0000 0 +31.351 -28.425 +29.268 -30.615 +30.309 -28.925 +30.309 -30.115
05=CAI 04 +09.771 -67.840 095.840 36.811 0000 0 +12.783 -63.835 +06.759 -71.844 +12.583 -64.350 +06.959 -71.597
06=BXI 03 -18.201 +59.956 223.636 30.840 0000 0 -17.740 +61.816 -19.327 +58.960 -17.274 +61.498 -19.127 +58.296
07=AX_ 03 -22.280 +45.923 209.603 +0.000 0000 0 -21.420 +47.367 -22.635 +44.479 -22.280 +46.867 -22.280 +44.979
08=AX_ 05 -12.726 +38.564 202.244 +0.000 0000 0 -11.216 +39.628 -14.236 +37.499 +00.000 +00.000 +00.000 +00.000
09=BXI 09 -09.800 -28.837 134.842 21.477 0000 0 -08.690 -26.759 -09.948 -30.916 -08.355 -27.172 -09.748 -30.716
10=HS_ 01 -10.260 -82.133 081.547 +0.000 0000 0 -09.382 -79.839 -11.138 -84.428 -10.260 -80.339 -10.260 -83.928
20230822.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 →

2023/20230822_ky · KY · 14 frames · 299.9 MB · 09:01:24–09:07:54 UT

09:05:54 UT · 30 ms 09:05:24 UT · 40 ms · over-exposed 09:02:24 UT · 30 ms 09:01:54 UT · 40 ms · over-exposed 09:01:24 UT · 60 ms · over-exposed 09:04:54 UT · 60 ms · over-exposed 09:06:24 UT · 60 ms 09:06:54 UT · 40 ms 09:07:24 UT · 20 ms 09:07:54 UT 09:02:54 UT · 60 ms 09:03:24 UT · 40 ms 09:03:54 UT · 20 ms 09:04:24 UT

Coronado H-α animations from frame sequences

No Coronado observation for this day.