Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 30 June 2023

‹ 28.06.2023 2023 01.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

30.06.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:45 UT
Observer
Hikmet ÇAKMAK
g
6
f
61
R
121
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 3Group 1 · AX_ – 3 Group 2 · FKC – 52Group 2 · FKC – 52 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · HA_ – 2Group 4 · HA_ – 2 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · ?__ – 1Group 6 · ?__ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=30.06.2023
Saat=08:45
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=-3.12
Enlemaçısı=2.74
Boylamaçısı=144.69
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.5
Sırano=19749
AyRasatNo=27
RasatÖnceki=28.06.2023
RasatSonraki=01.07.2023

[Leke Grupları]
Grupsayısı=6:2:4
LekeSayısı=61:55:6
RölatifSayı=121:75:46
01=AX_ 03 +15.508 +63.936 208.626 +0.000 0000 0 +15.969 +64.813 +15.470 +63.590 +15.508 +64.480 +15.508 +63.825
02=FKC 52 +16.720 +19.231 163.921 20.731 0000 0 +19.560 +26.911 +12.584 +11.550 +18.751 +26.141 +13.565 +12.267
03=AX_ 02 -15.602 +62.294 206.984 +0.000 0000 0 -15.269 +62.849 -15.935 +61.739 -15.602 +62.349 -15.602 +62.239
04=HA_ 02 -14.962 -31.172 113.518 +0.000 0000 0 -14.280 -30.582 -15.643 -31.762 -14.962 -31.820 -14.962 -31.262
05=AX_ 01 -06.877 -48.758 095.932 -1.000 0000 0 -06.877 -48.758 -06.877 -48.758
06=?__ 01 -12.145 -82.986 061.704 +0.000 0000 0 -11.609 -81.810 -12.680 -84.163 -12.145 -82.310 -12.145 -83.662
20230630.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 →

2023/20230630_hc · HC · 7 frames · 150.0 MB · 08:45:38–09:24:59 UT

08:54:56 UT · 30 ms 09:24:59 UT · 30 ms 08:45:38 UT · 30 ms 08:48:35 UT · 30 ms 08:46:57 UT · 60 ms · over-exposed 09:24:03 UT · 60 ms · over-exposed 09:03:28 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.