Images 11.04.2024 · Istanbul University Observatory Solar Observations

Solar Images Thursday, 11 April 2024

‹ 10.04.2024 2024 12.04.2024 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 08:45 UT
Observer: Korhan YELKENCİ
g: 5
f: 42
R: 92
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 6

Group 2 · DAI – 17

Group 3 · BXI – 8

Group 4 · CAI – 10

Group 5 · HS_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=11.04.2024
Saat=08:45
Gözlemci=Korhan YELKENCİ
KontrolEden=Korhan YELKENCİ
Durumaçısı=-26.17
Enlemaçısı=-5.87
Boylamaçısı=331.94
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.8
Sırano=19957
AyRasatNo=10
RasatÖnceki=10.04.2024
RasatSonraki=12.04.2024

[Leke Grupları]
Grupsayısı=5:3:2
LekeSayısı=42:31:11
RölatifSayı=92:61:31
01=HS_ 06 +07.531 +27.981 359.921 +0.000 0000 0 +09.209 +29.813 +05.854 +26.149 +07.531 +29.313 +07.531 +26.649
02=DAI 17 +24.940 -19.565 312.375 30.810 0000 0 +26.130 -16.440 +22.580 -22.689 +25.736 -16.640 +22.258 -22.489
03=BXI 08 +19.107 -49.820 282.858 15.974 0000 0 +20.698 -43.995 +17.516 -54.168 +20.498 -44.195 +17.716 -53.968
04=CAI 10 -08.306 -15.215 316.725 18.780 0000 0 -06.826 -11.800 -09.785 -19.349 -07.260 -11.280 -09.585 -19.149
05=HS_ 01 -20.131 -85.218 246.722 +0.000 0000 0 -19.282 -82.263 -20.980 -88.174 -20.131 -82.763 -20.131 -87.674

20240411.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 →

2024/20240411_ky · KY · 14 frames · 299.9 MB · 09:22:46–09:29:20 UT

09:26:50 UT · 50 ms