Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 18 May 2024

‹ 17.05.2024 2024 20.05.2024 ›

Photosphere sunspot drawing and RDS evaluation

18.05.2024 photosphere drawing

High-resolution scan (3238 px)

Time
11:24 UT
Observer
Burçin TANIK
g
8
f
56
R
136
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · HK_ – 2Group 3 · HK_ – 2 Group 4 · DAI – 11Group 4 · DAI – 11 Group 5 · CHI – 12Group 5 · CHI – 12 Group 6 · EHI – 11Group 6 · EHI – 11 Group 7 · EHC – 15Group 7 · EHC – 15 Group 8 · HK_ – 2Group 8 · HK_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=18.05.2024
Saat=11:24
Gözlemci=Burçin TANIK
KontrolEden=Korhan YELKENCİ
Durumaçısı=-19.83
Enlemaçısı=-2.25
Boylamaçısı=201.52
Boylamfark=0
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.8
Sırano=19981
AyRasatNo=12
RasatÖnceki=17.05.2024
RasatSonraki=20.05.2024

[Leke Grupları]
Grupsayısı=8:2:6
LekeSayısı=56:3:53
RölatifSayı=136:23:113
01=AX_ 02 +20.127 +50.893 252.413 +0.000 0000 0 +20.385 +51.707 +19.868 +50.790 +20.127 +50.852 +20.127 +50.935
02=AX_ 01 +13.509 -22.361 179.159 -1.000 0000 0 +13.509 -22.361 +13.509 -22.361
03=HK_ 02 -19.648 +63.551 265.710 +0.000 0000 0 -18.586 +64.950 -20.711 +62.152 -19.648 +64.450 -19.648 +62.652
04=DAI 11 -23.333 +37.171 238.691 48.203 0000 0 -20.502 +40.387 -26.163 +33.956 -21.210 +38.535 -25.305 +34.865
05=CHI 12 -12.717 +18.938 220.458 26.480 0000 0 -10.536 +22.700 -14.897 +15.805 -13.769 +20.866 -11.743 +16.794
06=EHI 11 -08.760 -02.327 199.193 +0.000 0000 0 -06.178 +04.420 -09.974 -08.696 -08.760 +03.842 -08.760 -08.496
07=EHC 15 -13.542 -50.987 150.533 18.900 0000 0 -10.816 -44.790 -16.267 -57.185 -12.710 -46.692 -14.686 -54.358
08=HK_ 02 -07.455 -59.716 141.804 +0.000 0000 0 -06.770 -57.886 -08.833 -61.545 -07.455 -58.387 -07.455 -61.450
20240518.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 →

2024/20240518_bto · BTO · 5 frames · 107.1 MB · 10:47:09–10:51:42 UT

10:50:30 UT · 30 ms 10:48:29 UT · 30 ms 10:51:42 UT · 60 ms · over-exposed 10:49:26 UT · 60 ms · over-exposed 10:47:09 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.