Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 7 April 2024

‹ 06.04.2024 2024 08.04.2024 ›

Photosphere sunspot drawing and RDS evaluation

07.04.2024 photosphere drawing

High-resolution scan (3231 px)

Time
11:20 UT
Observer
Burçin TANIK
g
4
f
10
R
50
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · HK_ – 3Group 2 · HK_ – 3 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · CSI – 4Group 4 · CSI – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=7.04.2024
Saat=11:20
Gözlemci=Burçin TANIK
KontrolEden=Ergün EGE
Durumaçısı=-26.25
Enlemaçısı=-6.14
Boylamaçısı=23.31
Boylamfark=0
GKalite=3
GDurum=B.A , Y.B
Kuzeyaçısı=-0.5
Sırano=19953
AyRasatNo=6
RasatÖnceki=06.04.2024
RasatSonraki=08.04.2024

[Leke Grupları]
Grupsayısı=4:3:1
LekeSayısı=10:6:4
RölatifSayı=50:36:14
01=AX_ 02 +06.386 +46.329 069.639 +0.000 0000 0 +06.918 +46.843 +05.854 +45.814 +06.386 +46.343 +06.386 +46.314
02=HK_ 03 +07.642 -23.395 359.915 +0.000 0000 0 +09.324 -21.683 +05.960 -25.106 +07.642 -22.184 +07.642 -24.607
03=AX_ 01 +25.670 -26.920 356.390 -1.000 0000 0 +25.670 -26.920 +25.670 -26.920
04=CSI 04 -08.342 -64.801 318.509 +0.000 0000 0 -07.558 -61.470 -09.126 -68.556 -08.342 -61.758 -08.342 -67.844
20240407.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 →

2024/20240407_bto · BTO · 1 frames · 21.4 MB · 11:31:51 UT

11:31:51 UT · 70 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.