Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 18 July 2024

‹ 17.07.2024 2024 19.07.2024 ›

Photosphere sunspot drawing and RDS evaluation

18.07.2024 photosphere drawing

High-resolution scan (3230 px)

Time
11:40 UT
Observer
Süleyman FİŞEK
g
16
f
96
R
256
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DSI – 5Group 1 · DSI – 5 Group 2 · CAO – 6Group 2 · CAO – 6 Group 3 · BXO – 2Group 3 · BXO – 2 Group 4 · DSO – 2Group 4 · DSO – 2 Group 5 · HS_ – 1Group 5 · HS_ – 1 Group 6 · BXI – 4Group 6 · BXI – 4 Group 7 · DSC – 8Group 7 · DSC – 8 Group 8 · CSO – 2Group 8 · CSO – 2 Group 9 · FSI – 9Group 9 · FSI – 9 Group 10 · DSC – 7Group 10 · DSC – 7 Group 11 · AX_ – 1Group 11 · AX_ – 1 Group 12 · DAI – 11Group 12 · DAI – 11 Group 13 · BXI – 4Group 13 · BXI – 4 Group 14 · HS_ – 1Group 14 · HS_ – 1 Group 15 · EKC – 32Group 15 · EKC – 32 Group 16 · HS_ – 1Group 16 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=18.07.2024
Saat=11:40
Gözlemci=Süleyman FİŞEK
KontrolEden=Süleyman FİŞEK
Durumaçısı=5.34
Enlemaçısı=4.68
Boylamaçısı=114.08
Boylamfark=0
GKalite=3
GDurum=G.T
Kuzeyaçısı=0.0
Sırano=20035
AyRasatNo=16
RasatÖnceki=17.07.2024
RasatSonraki=19.07.2024

[Leke Grupları]
Grupsayısı=16:8:8
LekeSayısı=96:30:66
RölatifSayı=256:110:146
01=DSI 05 +13.129 +51.850 165.165 +0.000 0000 0 +16.690 +55.574 +10.188 +46.595 +13.129 +55.374 +13.129 +46.795
02=CAO 06 +15.261 +34.497 148.577 17.319 0000 0 +16.116 +36.526 +14.407 +32.469 +14.894 +36.000 +15.695 +33.433
03=BXO 02 +14.990 +17.539 131.619 +0.000 0000 0 +15.365 +17.926 +14.614 +17.152 +14.990 +17.426 +14.990 +17.652
04=DSO 02 +19.742 -03.865 110.215 +0.000 0000 0 +20.295 -01.978 +19.189 -05.751 +19.742 -02.478 +19.742 -05.252
05=HS_ 01 +22.905 -21.696 092.384 +0.000 0000 0 +23.303 -21.212 +22.506 -22.180 +22.905 -21.712 +22.905 -21.680
06=BXI 04 +25.818 -37.944 076.136 +0.000 0000 0 +26.562 -36.243 +25.740 -39.646 +25.818 -36.743 +25.818 -39.146
07=DSC 08 +02.885 -42.706 071.374 14.636 0000 0 +04.507 -39.731 +01.264 -45.681 +03.128 -40.735 +02.355 -43.698
08=CSO 02 +18.557 -54.457 059.623 +0.000 0000 0 +19.138 -52.956 +17.977 -55.957 +18.557 -53.457 +18.557 -55.458
09=FSI 09 -11.932 +48.213 162.293 33.253 0000 0 -07.990 +58.194 -16.766 +38.231 -16.208 +56.544 -08.188 +44.135
10=DSC 07 -22.717 +39.774 153.854 42.304 0000 0 -19.710 +35.591 -26.363 +43.957 -19.851 +42.748 -25.439 +36.577
11=AX_ 01 -26.879 +11.535 125.615 -1.000 0000 0 -26.879 +11.535 -26.879 +11.535
12=DAI 11 -05.633 +01.412 115.492 13.160 0000 0 -03.949 +04.650 -07.316 -01.240 -05.638 +02.967 -06.437 -00.452
13=BXI 04 -18.900 -06.500 107.580 +0.000 0000 0 -17.280 -01.914 -18.900 -11.850 -18.900 -02.114 -18.900 -10.885
14=HS_ 01 -32.150 -12.683 101.397 +0.000 0000 0 -31.323 -12.100 -32.706 -13.265 -32.150 -12.601 -32.150 -12.765
15=EKC 32 -06.882 -21.755 092.325 14.336 0000 0 -04.303 -15.648 -09.462 -27.862 -07.720 -17.983 -05.496 -26.722
16=HS_ 01 -15.988 -47.634 066.446 +0.000 0000 0 -15.750 -46.601 -16.901 -48.667 -15.988 -47.101 -15.988 -48.167
20240718.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 →

2024/20240718_sf · SF · 4 frames · 85.7 MB · 12:27:49–12:31:17 UT

12:30:19 UT · 30 ms 12:27:49 UT · 30 ms 12:29:22 UT · 60 ms · over-exposed 12:31:17 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.