Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 25 September 2024

‹ 24.09.2024 2024 26.09.2024 ›

Photosphere sunspot drawing and RDS evaluation

25.09.2024 photosphere drawing

High-resolution scan (3232 px)

Time
09:25 UT
Observer
Burçin TANIK
g
8
f
57
R
137
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 2Group 1 · BXO – 2 Group 2 · BXI – 8Group 2 · BXI – 8 Group 3 · HA_ – 2Group 3 · HA_ – 2 Group 4 · DAC – 6Group 4 · DAC – 6 Group 5 · AX_ – 2Group 5 · AX_ – 2 Group 6 · DRI – 9Group 6 · DRI – 9 Group 7 · ERC – 11Group 7 · ERC – 11 Group 8 · DAI – 17Group 8 · DAI – 17
RDS data file (.gzd) 
[Gözlem]
Tarih=25.09.2024
Saat=09:25
Gözlemci=Burçin TANIK
KontrolEden=Burçin TANIK
Durumaçısı=25.51
Enlemaçısı=6.94
Boylamaçısı=283.5
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.6
Sırano=20102
AyRasatNo=23
RasatÖnceki=24.09.2024
RasatSonraki=26.09.2024

[Leke Grupları]
Grupsayısı=8:2:6
LekeSayısı=57:10:47
RölatifSayı=137:30:107
01=BXO 02 +15.594 +65.648 349.148 +0.000 0000 0 +15.798 +67.252 +15.390 +64.430 +15.594 +66.559 +15.594 +64.737
02=BXI 08 +22.415 +56.904 340.404 +0.000 0000 0 +23.553 +59.814 +21.277 +53.994 +22.415 +59.614 +22.415 +54.194
03=HA_ 02 -25.540 +47.790 331.290 +0.000 0000 0 -24.115 +49.580 -25.993 +46.523 -25.540 +48.819 -25.540 +46.762
04=DAC 06 -10.309 +37.868 321.368 36.900 0000 0 -08.997 +39.540 -11.621 +36.196 -09.443 +38.802 -11.116 +36.499
05=AX_ 02 -09.549 +10.283 293.783 +0.000 0000 0 -09.314 +10.885 -09.784 +09.681 -09.549 +10.385 -09.549 +10.181
06=DRI 09 -14.830 -09.790 274.421 +0.000 0000 0 -13.605 -07.402 -16.550 -10.756 -14.830 -07.602 -14.830 -10.556
07=ERC 11 -21.392 -33.270 250.230 +0.000 0000 0 -18.350 -28.175 -24.433 -38.365 -21.392 -28.375 -21.392 -38.165
08=DAI 17 -09.557 -54.550 229.445 23.508 0000 0 -07.118 -50.124 -11.997 -57.986 -11.870 -51.611 -08.700 -57.110
20240925.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 →

2024/20240925_bto · BTO · 4 frames · 85.7 MB · 09:33:30–09:37:09 UT

09:36:11 UT · 30 ms 09:35:17 UT · 20 ms 09:33:30 UT · 50 ms · over-exposed 09:37:09 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.