Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 4 September 2023

‹ 03.09.2023 2023 05.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

04.09.2023 photosphere drawing

High-resolution scan (3222 px)

Time
10:05 UT
Observer
Başar COŞKUNOĞLU
g
7
f
28
R
98
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 2Group 1 · HS_ – 2 Group 2 · DAC – 14Group 2 · DAC – 14 Group 3 · BXI – 7Group 3 · BXI – 7 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · HS_ – 2Group 6 · HS_ – 2 Group 7 · AX_ – 1Group 7 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=4.09.2023
Saat=10:05
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Korhan YELKENCİ
Durumaçısı=21.8
Enlemaçısı=7.23
Boylamaçısı=351.15
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.4
Sırano=19812
AyRasatNo=4
RasatÖnceki=03.09.2023
RasatSonraki=05.09.2023

[Leke Grupları]
Grupsayısı=7:3:4
LekeSayısı=28:23:5
RölatifSayı=98:53:45
01=HS_ 02 +21.711 -05.697 345.453 +0.000 0000 0 +22.185 -05.152 +21.237 -06.242 +21.711 -05.652 +21.711 -05.742
02=DAC 14 +15.460 -10.885 340.265 06.171 0000 0 +16.961 -07.144 +13.959 -14.626 +16.180 -07.756 +15.460 -14.426
03=BXI 07 +15.771 -31.912 319.238 +0.000 0000 0 +16.242 -29.640 +15.299 -34.760 +15.771 -29.852 +15.771 -33.972
04=HS_ 01 -06.632 +17.798 008.948 +0.000 0000 0 -05.959 +18.316 -07.306 +17.279 -06.632 +17.816 -06.632 +17.780
05=AX_ 01 -08.290 +08.237 359.387 -1.000 0000 0 -08.290 +08.237 -08.290 +08.237
06=HS_ 02 -18.724 -09.858 341.292 +0.000 0000 0 -18.186 -08.961 -19.261 -10.756 -18.724 -09.460 -18.724 -10.255
07=AX_ 01 -20.552 -13.200 338.130 -1.000 0000 0 -20.552 -13.200 -20.552 -13.200
20230904.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 →

2023/20230904_bc · BC · 6 frames · 128.6 MB · 10:14:53–10:18:27 UT

10:15:50 UT · 40 ms 10:16:26 UT · 40 ms 10:14:53 UT · 40 ms 10:17:44 UT · 70 ms · over-exposed 10:18:27 UT · 70 ms · over-exposed 10:17:06 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.