Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 9 September 2023

‹ 07.09.2023 2023 10.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

09.09.2023 photosphere drawing

High-resolution scan (3222 px)

Time
10:00 UT
Observer
Olcay PLEVNE
g
5
f
68
R
118
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 6Group 1 · BXI – 6 Group 2 · CSI – 16Group 2 · CSI – 16 Group 3 · DHC – 30Group 3 · DHC – 30 Group 4 · BXI – 2Group 4 · BXI – 2 Group 5 · CAI – 14Group 5 · CAI – 14
RDS data file (.gzd) 
[Gözlem]
Tarih=9.09.2023
Saat=10:00
Gözlemci=Olcay PLEVNE
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=22.91
Enlemaçısı=7.25
Boylamaçısı=285.16
Boylamfark=1
GKalite=3
GDurum=Y.B , K.T
Kuzeyaçısı=0.0
Sırano=19816
AyRasatNo=8
RasatÖnceki=07.09.2023
RasatSonraki=10.09.2023

[Leke Grupları]
Grupsayısı=5:5:0
LekeSayısı=68:68:0
RölatifSayı=118:118:0
01=BXI 06 +20.493 +56.782 341.942 +0.000 0000 0 +22.559 +61.119 +18.426 +52.445 +20.493 +60.919 +20.493 +52.645
02=CSI 16 +15.289 +54.687 339.847 +0.000 0000 0 +17.893 +62.121 +12.686 +47.252 +15.289 +61.921 +15.289 +47.452
03=DHC 30 +17.480 -06.337 278.823 +0.000 0000 0 +20.121 -00.419 +14.839 -12.254 +17.480 -00.619 +17.480 -12.540
04=BXI 02 +18.245 -31.330 254.127 +0.000 0000 0 +19.593 -29.630 +16.897 -32.437 +00.000 +00.000 +00.000 +00.000
05=CAI 14 +25.441 -39.940 245.220 +0.000 0000 0 +27.895 -33.912 +22.987 -45.967 +25.441 -34.112 +25.441 -45.767
20230909.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 →

2023/20230909_op · OP · 4 frames · 85.7 MB · 10:06:11–10:09:51 UT

10:08:00 UT · 40 ms 10:06:11 UT · 40 ms 10:08:51 UT · 60 ms · over-exposed 10:09:51 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.