Images 29.02.2024 · Istanbul University Observatory Solar Observations

Solar Images Thursday, 29 February 2024

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 08:30 UT
Observer: K.YELKENCİ=S.F.
g: 7
f: 50
R: 120
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · FKI – 12

Group 2 · HS_ – 1

Group 3 · DAC – 18

Group 4 · BXI – 4

Group 5 · CAI – 6

Group 6 · BXI – 8

Group 7 · HS_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=29.02.2024
Saat=08:30
Gözlemci=K.YELKENCİ=S.F.
KontrolEden=Süleyman FİŞEK
Durumaçısı=-21.45
Enlemaçısı=-7.21
Boylamaçısı=165.85
Boylamfark=2
GKalite=3
GDurum=H.S
Kuzeyaçısı=-0.6
Sırano=19926
AyRasatNo=18
RasatÖnceki=28.02.2024
RasatSonraki=02.03.2024

[Leke Grupları]
Grupsayısı=7:5:2
LekeSayısı=50:41:9
RölatifSayı=120:91:29
01=FKI 12 +19.850 +55.102 220.952 16.941 0000 0 +21.962 +64.199 +16.208 +46.400 +21.628 +63.685 +16.408 +46.233
02=HS_ 01 +04.811 +03.589 169.439 +0.000 0000 0 +05.401 +04.110 +04.220 +03.166 +04.811 +03.561 +04.811 +03.617
03=DAC 18 +19.440 -00.165 165.685 12.426 0000 0 +20.780 +05.414 +18.990 -05.743 +20.704 +05.363 +17.993 -05.771
04=BXI 04 +06.602 -11.912 153.938 +0.000 0000 0 +08.940 -10.822 +05.109 -13.200 +00.000 +00.000 +00.000 +00.000
05=CAI 06 +18.876 -33.630 132.787 48.334 0000 0 +21.941 -30.301 +15.810 -35.825 +21.741 -30.501 +16.100 -35.625
06=BXI 08 -12.760 +09.805 175.655 +0.000 0000 0 -12.139 +12.528 -13.380 +07.820 -12.760 +11.659 -12.760 +07.951
07=HS_ 01 -35.541 -06.210 159.640 +0.000 0000 0 -34.262 -05.160 -36.821 -07.404 -35.541 -05.588 -35.541 -06.832

20240229.gzd

Chromosphere (H-α) FITS frames

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 →

2024/20240229_ky · KY · 14 frames · 299.9 MB · 08:55:17–09:01:47 UT

08:55:17 UT · 30 ms