Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 5 September 2023

‹ 04.09.2023 2023 06.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

05.09.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:35 UT
Observer
Korhan YELKENCİ
g
7
f
71
R
141
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CRI – 3Group 1 · CRI – 3 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · CAI – 26Group 3 · CAI – 26 Group 4 · CAI – 7Group 4 · CAI – 7 Group 5 · BXI – 10Group 5 · BXI – 10 Group 6 · EAI – 16Group 6 · EAI – 16 Group 7 · BXI – 7Group 7 · BXI – 7
RDS data file (.gzd) 
[Gözlem]
Tarih=5.09.2023
Saat=08:35
Gözlemci=Korhan YELKENCİ
KontrolEden=Olcay PLEVNE
Durumaçısı=22.02
Enlemaçısı=7.24
Boylamaçısı=338.77
Boylamfark=2
GKalite=3
GDurum=B.A
Kuzeyaçısı=-1.0
Sırano=19813
AyRasatNo=5
RasatÖnceki=04.09.2023
RasatSonraki=06.09.2023

[Leke Grupları]
Grupsayısı=7:5:2
LekeSayısı=71:48:23
RölatifSayı=141:98:43
01=CRI 03 +23.335 +65.105 043.875 29.229 0000 0 +25.161 +68.350 +21.508 +61.859 +24.961 +67.890 +21.708 +62.590
02=AX_ 02 +21.203 +06.734 345.504 +0.000 0000 0 +21.420 +07.420 +20.986 +06.426 +21.203 +06.731 +21.203 +06.737
03=CAI 26 +15.151 +02.453 341.223 14.972 0000 0 +16.601 +07.353 +13.701 -02.446 +16.401 +07.153 +13.901 -02.246
04=CAI 07 +16.950 -19.301 319.469 16.752 0000 0 +17.129 -16.280 +15.610 -22.322 +16.929 -16.571 +15.261 -22.122
05=BXI 10 +15.821 -60.711 278.590 20.568 0000 0 +17.240 -57.833 +14.618 -63.589 +16.824 -58.330 +14.818 -63.389
06=EAI 16 -06.546 +24.120 002.782 12.350 0000 0 -04.768 +31.706 -08.324 +16.318 -04.968 +31.506 -08.124 +16.518
07=BXI 07 -19.379 +00.514 339.284 33.722 0000 0 -17.755 +02.852 -21.400 -01.824 -17.955 +02.652 -20.804 -01.624
20230905.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 →

2023/20230905_ky · KY · 7 frames · 150.0 MB · 08:59:33–09:02:33 UT

09:00:33 UT · 30 ms 09:00:03 UT · 40 ms 08:59:33 UT · 60 ms 09:01:04 UT · 60 ms 09:01:34 UT · 40 ms 09:02:03 UT · 20 ms 09:02:33 UT

Coronado H-α animations from frame sequences

No Coronado observation for this day.