Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 12 May 2024

‹ 07.05.2024 2024 13.05.2024 ›

Photosphere sunspot drawing and RDS evaluation

12.05.2024 photosphere drawing

High-resolution scan (3230 px)

Time
06:30 UT
Observer
Süleyman FİŞEK
g
9
f
78
R
168
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HH_ – 3Group 1 · HH_ – 3 Group 2 · DAI – 16Group 2 · DAI – 16 Group 3 · CSI – 9Group 3 · CSI – 9 Group 4 · FKC – 27Group 4 · FKC – 27 Group 5 · DSI – 2Group 5 · DSI – 2 Group 6 · AX_ – 2Group 6 · AX_ – 2 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · DAI – 14Group 8 · DAI – 14 Group 9 · EHO – 4Group 9 · EHO – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=12.05.2024
Saat=06:30
Gözlemci=Süleyman FİŞEK
KontrolEden=Korhan YELKENCİ
Durumaçısı=-21.56
Enlemaçısı=-2.95
Boylamaçısı=283.57
Boylamfark=3
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.8
Sırano=19975
AyRasatNo=6
RasatÖnceki=07.05.2024
RasatSonraki=13.05.2024

[Leke Grupları]
Grupsayısı=9:3:6
LekeSayısı=78:28:50
RölatifSayı=168:58:110
01=HH_ 03 +26.283 +19.789 303.359 +0.000 0000 0 +27.702 +21.197 +24.864 +18.380 +26.283 +20.698 +26.283 +18.880
02=DAI 16 +21.515 -01.622 281.948 +0.000 0000 0 +25.347 +01.560 +17.684 -04.299 +21.515 +00.856 +21.515 -04.990
03=CSI 09 +18.108 -29.673 253.897 +0.000 0000 0 +19.819 -25.440 +16.397 -33.906 +18.108 -25.640 +18.108 -33.706
04=FKC 27 -19.781 +62.588 346.158 +0.000 0000 0 -15.844 +73.979 -23.718 +51.197 -19.781 +73.779 -19.781 +51.397
05=DSI 02 -15.638 +31.633 315.203 +0.000 0000 0 -12.708 +33.480 -18.568 +29.786 -15.638 +33.280 -15.638 +29.986
06=AX_ 02 -04.496 +28.556 312.126 +0.000 0000 0 -03.663 +29.205 -05.328 +27.907 -04.496 +28.705 -04.496 +28.407
07=AX_ 01 -08.815 -07.277 276.293 -1.000 0000 0 -08.815 -07.277 -08.815 -07.277
08=DAI 14 -21.130 -20.871 262.699 33.107 0000 0 -18.836 -18.190 -23.423 -23.551 -19.730 -18.949 -22.103 -22.592
09=EHO 04 -11.381 -59.547 224.230 21.900 0000 0 -08.567 -67.609 -14.195 -51.486 -09.267 -52.123 -13.546 -62.850
20240512.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 →

2024/20240512_sf · SF · 6 frames · 128.6 MB · 07:03:13–07:09:41 UT

07:06:43 UT · 30 ms 07:08:33 UT · 30 ms 07:03:13 UT · 40 ms 07:07:33 UT · 60 ms · over-exposed 07:09:41 UT · 60 ms · over-exposed 07:05:43 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.