Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 28 July 2023

‹ 27.07.2023 2023 29.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

28.07.2023 photosphere drawing

High-resolution scan (3220 px)

Time
10:36 UT
Observer
Başar COŞKUNOĞLU
g
8
f
47
R
127
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · ESC – 22Group 2 · ESC – 22 Group 3 · CSO – 3Group 3 · CSO – 3 Group 4 · DSO – 2Group 4 · DSO – 2 Group 5 · HS_ – 1Group 5 · HS_ – 1 Group 6 · CSI – 14Group 6 · CSI – 14 Group 7 · CSO – 3Group 7 · CSO – 3 Group 8 · HS_ – 1Group 8 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=28.07.2023
Saat=10:36
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Korhan YELKENCİ
Durumaçısı=9.24
Enlemaçısı=5.47
Boylamaçısı=133.15
Boylamfark=1
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=-0.2
Sırano=19776
AyRasatNo=27
RasatÖnceki=27.07.2023
RasatSonraki=29.07.2023

[Leke Grupları]
Grupsayısı=8:3:5
LekeSayısı=47:26:21
RölatifSayı=127:56:71
01=HS_ 01 +14.101 +40.617 173.767 +0.000 0000 0 +15.471 +41.853 +12.731 +39.381 +14.101 +41.353 +14.101 +39.881
02=ESC 22 +12.162 -43.734 089.416 +0.000 0000 0 +14.700 -38.645 +10.255 -48.823 +12.162 -38.845 +12.162 -48.623
03=CSO 03 +19.585 -64.617 068.533 +0.000 0000 0 +20.681 -62.676 +18.488 -66.559 +19.585 -62.876 +19.585 -66.359
04=DSO 02 -09.270 +66.199 199.349 +0.000 0000 0 -07.462 +68.761 -10.592 +63.636 -09.270 +68.561 -09.270 +63.836
05=HS_ 01 -15.448 +40.767 173.917 +0.000 0000 0 -14.878 +41.158 -16.180 +40.376 -15.448 +40.658 -15.448 +40.876
06=CSI 14 -09.729 -09.588 123.562 66.182 0000 0 -07.514 -06.602 -11.945 -12.574 -07.939 -10.409 -10.597 -11.583
07=CSO 03 -23.477 -59.201 073.949 +0.000 0000 0 -22.138 -55.920 -24.817 -63.311 -23.477 -55.292 -23.477 -63.111
08=HS_ 01 -09.811 -71.495 061.655 +0.000 0000 0 -09.920 -69.895 -10.530 -73.960 -09.811 -69.963 -09.811 -73.280
20230728.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 →

2023/20230728_bc · BC · 6 frames · 128.6 MB · 10:17:52–10:22:13 UT

10:18:50 UT · 30 ms 10:19:27 UT · 30 ms 10:17:52 UT · 30 ms 10:20:53 UT · 50 ms · over-exposed 10:21:31 UT · 50 ms · over-exposed 10:22:13 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.