Images 12.04.2024 · Istanbul University Observatory Solar Observations

Solar Images Friday, 12 April 2024

‹ 11.04.2024 2024 13.04.2024 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 09:35 UT
Observer: Korhan YELKENCİ
g: 5
f: 45
R: 95
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 7

Group 2 · DAI – 17

Group 3 · DAI – 13

Group 4 · CAI – 5

Group 5 · HS_ – 3

RDS data file (.gzd)

[Gözlem]
Tarih=12.04.2024
Saat=09:35
Gözlemci=Korhan YELKENCİ
KontrolEden=Ergün EGE
Durumaçısı=-26.13
Enlemaçısı=-5.79
Boylamaçısı=318.28
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19958
AyRasatNo=11
RasatÖnceki=11.04.2024
RasatSonraki=13.04.2024

[Leke Grupları]
Grupsayısı=5:3:2
LekeSayısı=45:37:8
RölatifSayı=95:67:28
01=HS_ 07 +07.366 +41.950 359.375 +0.000 0000 0 +08.832 +43.178 +05.901 +39.130 +07.366 +43.474 +07.366 +40.426
02=DAI 17 +25.214 -05.477 312.803 26.674 0000 0 +27.512 -01.780 +22.916 -09.875 +27.312 -01.278 +23.116 -09.675
03=DAI 13 +19.573 -35.307 282.973 16.572 0000 0 +21.200 -30.898 +18.125 -39.717 +20.820 -31.980 +18.325 -39.517
04=CAI 05 -07.373 +00.766 319.460 14.779 0000 0 -06.154 +04.842 -08.592 -03.310 -06.354 +04.642 -08.392 -03.110
05=HS_ 03 -19.924 -68.764 249.516 +0.000 0000 0 -18.745 -66.844 -21.102 -70.683 -19.924 -67.344 -19.924 -70.184

20240412.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 →

2024/20240412_ky · KY · 14 frames · 299.9 MB · 10:13:44–10:20:13 UT

10:14:44 UT · 30 ms