Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 26 September 2023

‹ 25.09.2023 2023 28.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

26.09.2023 photosphere drawing

High-resolution scan (3232 px)

Time
08:40 UT
Observer
Hikmet ÇAKMAK
g
7
f
65
R
135
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ?__ – 2Group 1 · ?__ – 2 Group 2 · DAI – 12Group 2 · DAI – 12 Group 3 · HA_ – 2Group 3 · HA_ – 2 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · HA_ – 1Group 5 · HA_ – 1 Group 6 · DAI – 33Group 6 · DAI – 33 Group 7 · DAI – 14Group 7 · DAI – 14
RDS data file (.gzd) 
[Gözlem]
Tarih=26.09.2023
Saat=08:40
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Burçin TANIK
Durumaçısı=25.53
Enlemaçısı=6.93
Boylamaçısı=61.47
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.5
Sırano=19833
AyRasatNo=25
RasatÖnceki=25.09.2023
RasatSonraki=28.09.2023

[Leke Grupları]
Grupsayısı=7:5:2
LekeSayısı=65:18:47
RölatifSayı=135:68:67
01=?__ 02 +29.400 +78.559 140.290 +0.000 0000 0 +30.986 +80.872 +27.815 +76.246 +29.400 +80.372 +29.400 +76.746
02=DAI 12 +10.173 +40.587 102.570 21.945 0000 0 +12.472 +43.723 +07.873 +37.451 +10.824 +42.452 +09.640 +38.780
03=HA_ 02 +18.273 +20.793 082.263 +0.000 0000 0 +18.892 +21.348 +17.654 +20.238 +18.273 +20.848 +18.273 +20.738
04=AX_ 01 +14.849 -58.558 002.912 -1.000 0000 0 +14.849 -58.558 +14.849 -58.558
05=HA_ 01 +13.284 -69.963 351.507 +0.000 0000 0 +14.221 -68.879 +12.346 -71.470 +13.284 -69.167 +13.284 -70.758
06=DAI 33 -12.345 +12.811 074.281 32.587 0000 0 -08.639 +17.343 -16.510 +08.279 -10.251 +15.681 -14.480 +09.722
07=DAI 14 -22.170 -05.212 056.258 16.119 0000 0 -20.434 -01.966 -23.601 -08.458 -21.256 -02.822 -22.667 -07.711
20230926.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 →

2023/20230926_hc · HC · 6 frames · 128.6 MB · 08:40:53–09:16:30 UT

09:06:14 UT · 30 ms 09:16:30 UT · 30 ms 08:57:03 UT · 30 ms 08:40:53 UT · 30 ms 08:44:49 UT · 60 ms · over-exposed 09:10:08 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.