Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 6 April 2024

‹ 05.04.2024 2024 07.04.2024 ›

Photosphere sunspot drawing and RDS evaluation

06.04.2024 photosphere drawing

High-resolution scan (3229 px)

Time
06:45 UT
Observer
Süleyman FİŞEK
g
7
f
26
R
96
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DAI – 8Group 1 · DAI – 8 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · HH_ – 3Group 4 · HH_ – 3 Group 5 · CRI – 3Group 5 · CRI – 3 Group 6 · BXI – 7Group 6 · BXI – 7 Group 7 · HH_ – 2Group 7 · HH_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=6.04.2024
Saat=06:45
Gözlemci=Süleyman FİŞEK
KontrolEden=Burçin TANIK
Durumaçısı=-26.26
Enlemaçısı=-6.22
Boylamaçısı=39.03
Boylamfark=3
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19952
AyRasatNo=5
RasatÖnceki=05.04.2024
RasatSonraki=07.04.2024

[Leke Grupları]
Grupsayısı=7:5:2
LekeSayısı=26:17:9
RölatifSayı=96:67:29
01=DAI 08 +05.344 +29.123 068.153 16.264 0000 0 +06.610 +31.381 +04.770 +26.864 +05.732 +30.900 +04.681 +27.295
02=AX_ 02 +11.441 +04.651 043.681 +0.000 0000 0 +11.860 +04.951 +11.220 +04.350 +11.441 +04.451 +11.441 +04.851
03=AX_ 01 +08.131 -16.434 022.596 -1.000 0000 0 +08.131 -16.434 +08.131 -16.434
04=HH_ 03 +07.426 -38.518 000.512 +0.000 0000 0 +08.882 -36.732 +05.971 -40.304 +07.426 -37.232 +07.426 -39.804
05=CRI 03 +25.483 -39.493 359.537 +0.000 0000 0 +26.231 -37.200 +24.734 -41.786 +25.483 -37.700 +25.483 -41.286
06=BXI 07 -10.557 +27.438 066.468 +0.000 0000 0 -09.149 +31.382 -11.965 +23.493 -10.557 +31.182 -10.557 +23.693
07=HH_ 02 -08.440 -79.913 319.117 +0.000 0000 0 -07.559 -77.550 -09.322 -82.277 -08.440 -78.490 -08.440 -81.777
20240406.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 →

2024/20240406_sf · SF · 6 frames · 128.6 MB · 07:09:59–07:15:28 UT

07:09:59 UT · 30 ms 07:12:47 UT · 30 ms 07:14:41 UT · 30 ms 07:13:35 UT · 60 ms · over-exposed 07:15:28 UT · 60 ms · over-exposed 07:12:01 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.