Images 05.06.2025 · Istanbul University Observatory Solar Observations

Solar Images Thursday, 5 June 2025

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3228 px)

Time: 07:15 UT
Observer: Burçin TANIK
g: 4
f: 46
R: 86
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CAI – 14

Group 2 · BXI – 13

Group 3 · HS_ – 1

Group 4 · CAI – 18

RDS data file (.gzd)

[Gözlem]
Tarih=5.06.2025
Saat=07:15
Gözlemci=Burçin TANIK
KontrolEden=Ergün EGE
Durumaçısı=-13.7
Enlemaçısı=-0.15
Boylamaçısı=188.09
Boylamfark=3
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.6
Sırano=20262
AyRasatNo=5
RasatÖnceki=04.06.2025
RasatSonraki=06.06.2025

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=46:27:19
RölatifSayı=86:47:39
01=CAI 14 +10.119 +54.500 242.140 32.401 0000 0 +13.121 +60.295 +07.117 +47.805 +08.481 +56.249 +11.534 +51.429
02=BXI 13 +11.786 -09.283 178.807 +0.000 0000 0 +12.740 -06.737 +10.832 -11.830 +11.786 -06.937 +11.786 -11.630
03=HS_ 01 -13.480 +63.855 251.945 +0.000 0000 0 -12.650 +65.268 -14.320 +62.441 -13.480 +64.769 -13.480 +62.941
04=CAI 18 -15.399 -60.544 127.546 24.621 0000 0 -13.920 -54.330 -17.706 -67.540 -16.749 -56.752 -14.616 -61.415

20250605.gzd

Chromosphere (H-α) FITS frames

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 →

2025/20250605_bto · BTO · 4 frames · 85.7 MB · 07:25:03–07:29:20 UT

07:26:33 UT · 20 ms

07:29:20 UT · 40 ms

07:27:59 UT · 60 ms · over-exposed

07:25:03 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.