Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 1 August 2023

‹ 31.07.2023 2023 02.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

01.08.2023 photosphere drawing

High-resolution scan (3230 px)

Time
10:00 UT
Observer
Hikmet ÇAKMAK
g
10
f
61
R
161
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EAI – 17Group 1 · EAI – 17 Group 2 · CAI – 7Group 2 · CAI – 7 Group 3 · CAO – 5Group 3 · CAO – 5 Group 4 · HA_ – 2Group 4 · HA_ – 2 Group 5 · AX_ – 2Group 5 · AX_ – 2 Group 6 · EAC – 17Group 6 · EAC – 17 Group 7 · AX_ – 3Group 7 · AX_ – 3 Group 8 · CRO – 2Group 8 · CRO – 2 Group 9 · AX_ – 4Group 9 · AX_ – 4 Group 10 · AX_ – 2Group 10 · AX_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=1.08.2023
Saat=10:00
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Olcay PLEVNE
Durumaçısı=10.84
Enlemaçısı=5.77
Boylamaçısı=80.57
Boylamfark=1
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.5
Sırano=19780
AyRasatNo=1
RasatÖnceki=31.07.2023
RasatSonraki=02.08.2023

[Leke Grupları]
Grupsayısı=10:5:5
LekeSayısı=61:33:28
RölatifSayı=161:83:78
01=EAI 17 +12.730 +10.853 091.423 22.214 0000 0 +16.829 +16.763 +08.632 +04.944 +10.756 +14.833 +14.338 +06.140
02=CAI 07 +23.145 -13.813 066.757 37.440 0000 0 +25.933 -10.336 +20.357 -17.291 +21.105 -11.272 +25.249 -16.781
03=CAO 05 +09.956 -45.570 035.513 +0.000 0000 0 +10.747 -39.845 +09.164 -50.268 +09.956 -40.858 +09.956 -50.282
04=HA_ 02 +23.760 -46.382 034.188 +0.000 0000 0 +24.952 -45.149 +22.568 -47.615 +23.760 -45.649 +23.760 -47.115
05=AX_ 02 +18.474 -69.780 011.492 +0.000 0000 0 +19.230 -68.267 +17.925 -69.888 +18.474 -69.469 +18.474 -70.900
06=EAC 17 -09.747 +43.959 124.529 10.570 0000 0 -07.432 +49.255 -12.610 +38.664 -10.119 +47.791 -08.593 +39.583
07=AX_ 03 -16.671 +28.550 108.625 +0.000 0000 0 -15.775 +29.256 -17.566 +26.854 +00.000 +00.000 +00.000 +00.000
08=CRO 02 -22.776 -06.440 074.130 +0.000 0000 0 -22.328 -02.896 -23.223 -09.983 -22.776 -03.397 -22.776 -09.483
09=AX_ 04 -08.419 -16.915 063.655 +0.000 0000 0 -08.540 -15.869 -08.785 -17.962 -08.419 -16.369 -08.419 -17.462
10=AX_ 02 -18.389 -28.359 052.211 +0.000 0000 0 -17.250 -27.550 -19.528 -29.663 +00.000 +00.000 +00.000 +00.000
20230801.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 →

2023/20230801_hc · HC · 6 frames · 128.6 MB · 10:03:56–10:33:38 UT

10:23:32 UT · 30 ms 10:03:56 UT · 30 ms 10:33:38 UT · 30 ms 10:14:40 UT · 30 ms 10:15:38 UT · 50 ms · over-exposed 10:26:13 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.