Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 27 September 2024

‹ 26.09.2024 2024 28.09.2024 ›

Photosphere sunspot drawing and RDS evaluation

27.09.2024 photosphere drawing

High-resolution scan (3235 px)

Time
09:30 UT
Observer
Burçin TANIK
g
12
f
60
R
180
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · AX_ – 2Group 5 · AX_ – 2 Group 6 · AX_ – 2Group 6 · AX_ – 2 Group 7 · DRI – 12Group 7 · DRI – 12 Group 8 · DRI – 15Group 8 · DRI – 15 Group 9 · AX_ – 1Group 9 · AX_ – 1 Group 10 · DSI – 20Group 10 · DSI – 20 Group 11 · HS_ – 1Group 11 · HS_ – 1 Group 12 · ?__ – 2Group 12 · ?__ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=27.09.2024
Saat=09:30
Gözlemci=Burçin TANIK
KontrolEden=Korhan YELKENCİ
Durumaçısı=25.7
Enlemaçısı=6.87
Boylamaçısı=257.06
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=0.0
Sırano=20104
AyRasatNo=25
RasatÖnceki=26.09.2024
RasatSonraki=28.09.2024

[Leke Grupları]
Grupsayısı=12:3:9
LekeSayısı=60:4:56
RölatifSayı=180:34:146
01=AX_ 02 +15.533 -22.770 234.983 +0.000 0000 0 +15.907 -20.832 +15.158 -23.322 +15.533 -22.250 +15.533 -23.515
02=AX_ 01 +15.622 -35.480 221.580 -1.000 0000 0 +15.622 -35.480 +15.622 -35.480
03=AX_ 01 +13.634 -68.501 188.559 -1.000 0000 0 +13.634 -68.501 +13.634 -68.501
04=AX_ 01 -24.996 +73.945 331.500 -1.000 0000 0 -24.996 +73.945 -24.996 +73.945
05=AX_ 02 -10.746 +66.731 323.791 +0.000 0000 0 -09.900 +67.758 -11.593 +65.704 +00.000 +00.000 +00.000 +00.000
06=AX_ 02 -10.317 +38.556 295.616 +0.000 0000 0 -09.866 +38.903 -10.769 +38.209 -10.317 +38.403 -10.317 +38.709
07=DRI 12 -15.228 +17.154 274.214 16.780 0000 0 -12.923 +20.586 -17.533 +13.723 -14.710 +20.109 -15.682 +14.755
08=DRI 15 -20.789 -05.770 251.983 28.790 0000 0 -17.992 -01.227 -23.586 -08.927 -19.343 -02.675 -22.119 -07.889
09=AX_ 01 -21.647 -16.328 240.732 -1.000 0000 0 -21.647 -16.328 -21.647 -16.328
10=DSI 20 -09.266 -25.955 231.105 29.515 0000 0 -07.190 -22.514 -11.343 -29.396 -08.740 -23.833 -10.707 -28.491
11=HS_ 01 -12.683 -66.369 190.691 +0.000 0000 0 -11.942 -65.114 -13.424 -67.623 -12.683 -65.615 -12.683 -67.124
12=?__ 02 -15.789 -78.147 178.913 +0.000 0000 0 -14.689 -74.349 -16.890 -81.945 -15.789 -74.849 -15.789 -81.445
20240927.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 →

2024/20240927_bto · BTO · 4 frames · 85.7 MB · 09:34:57–09:38:07 UT

09:38:07 UT · 30 ms 09:37:21 UT · 40 ms 09:36:29 UT · 60 ms · over-exposed 09:34:57 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.