Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 31 July 2024

‹ 30.07.2024 2024 01.08.2024 ›

Photosphere sunspot drawing and RDS evaluation

31.07.2024 photosphere drawing

High-resolution scan (3232 px)

Time
07:52 UT
Observer
Burçin TANIK
g
11
f
138
R
248
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · DHC – 13Group 2 · DHC – 13 Group 3 · CHO – 2Group 3 · CHO – 2 Group 4 · BXI – 4Group 4 · BXI – 4 Group 5 · FKC – 20Group 5 · FKC – 20 Group 6 · BXI – 8Group 6 · BXI – 8 Group 7 · HS_ – 1Group 7 · HS_ – 1 Group 8 · EAC – 32Group 8 · EAC – 32 Group 9 · FKC – 36Group 9 · FKC – 36 Group 10 · CKI – 18Group 10 · CKI – 18 Group 11 · ?__ – 3Group 11 · ?__ – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=31.07.2024
Saat=07:52
Gözlemci=Burçin TANIK
KontrolEden=Süleyman FİŞEK
Durumaçısı=10.71
Enlemaçısı=5.75
Boylamaçısı=304.19
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.5
Sırano=20048
AyRasatNo=29
RasatÖnceki=30.07.2024
RasatSonraki=01.08.2024

[Leke Grupları]
Grupsayısı=11:4:7
LekeSayısı=138:20:118
RölatifSayı=248:60:188
01=HS_ 01 +04.759 +38.159 342.349 +0.000 0000 0 +05.926 +39.311 +03.592 +37.700 +04.759 +38.465 +04.759 +37.854
02=DHC 13 +07.908 +18.730 322.263 +0.000 0000 0 +09.560 +22.287 +06.256 +13.859 +07.908 +22.870 +07.908 +14.590
03=CHO 02 +21.660 -21.870 282.320 +0.000 0000 0 +22.766 -20.125 +20.553 -23.614 +21.660 -20.325 +21.660 -23.414
04=BXI 04 +16.718 -68.645 235.545 +0.000 0000 0 +17.870 -67.000 +15.566 -70.290 +16.718 -67.200 +16.718 -70.900
05=FKC 20 -15.170 +56.750 000.940 +0.000 0000 0 -13.299 +64.251 -16.735 +49.249 -15.170 +64.510 -15.170 +49.449
06=BXI 08 -06.112 +45.830 350.200 36.910 0000 0 -04.358 +47.914 -07.866 +43.746 -07.460 +46.511 -05.356 +44.259
07=HS_ 01 -02.465 +32.534 336.724 +0.000 0000 0 -01.470 +33.323 -03.460 +31.746 -02.465 +32.823 -02.465 +32.245
08=EAC 32 -06.786 +27.737 331.927 +0.000 0000 0 -04.259 +34.179 -09.313 +21.294 -06.786 +33.979 -06.786 +21.494
09=FKC 36 -10.940 +18.381 322.571 24.445 0000 0 -05.939 +10.100 -14.249 +26.752 -13.404 +25.495 -07.410 +11.296
10=CKI 18 -23.806 -56.950 247.240 17.160 0000 0 -21.826 -51.278 -25.786 -62.622 -24.807 -53.217 -23.200 -58.432
11=?__ 03 -07.278 -79.140 225.500 +0.000 0000 0 -05.126 -73.700 -09.429 -85.210 -07.278 -73.885 -07.278 -84.395
20240731.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 →

2024/20240731_bto · BTO · 5 frames · 107.1 MB · 07:08:48–07:15:14 UT

07:15:14 UT · 20 ms 07:11:51 UT · 40 ms 07:08:48 UT · 30 ms 07:13:49 UT · 60 ms · over-exposed 07:10:31 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.