Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 13 September 2023

‹ 12.09.2023 2023 14.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

13.09.2023 photosphere drawing

High-resolution scan (3224 px)

Time
10:00 UT
Observer
Olcay PLEVNE
g
8
f
64
R
144
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EAC – 14Group 1 · EAC – 14 Group 2 · BXI – 21Group 2 · BXI – 21 Group 3 · BXI – 7Group 3 · BXI – 7 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · HS_ – 1Group 5 · HS_ – 1 Group 6 · CSI – 16Group 6 · CSI – 16 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · BXI – 3Group 8 · BXI – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=13.09.2023
Saat=10:00
Gözlemci=Olcay PLEVNE
KontrolEden=Burçin TANIK
Durumaçısı=23.69
Enlemaçısı=7.23
Boylamaçısı=232.34
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19820
AyRasatNo=12
RasatÖnceki=12.09.2023
RasatSonraki=14.09.2023

[Leke Grupları]
Grupsayısı=8:5:3
LekeSayısı=64:44:20
RölatifSayı=144:94:50
01=EAC 14 +16.371 +46.112 278.452 +0.000 0000 0 +18.400 +53.550 +14.342 +38.673 +16.371 +53.350 +16.371 +38.873
02=BXI 21 +24.231 +15.570 247.397 +0.000 0000 0 +26.520 +20.568 +22.409 +09.546 +24.231 +20.368 +24.231 +09.746
03=BXI 07 +11.317 -28.425 203.915 +0.000 0000 0 +12.536 -23.616 +10.970 -33.235 +11.317 -23.816 +11.317 -33.350
04=AX_ 01 +07.796 -35.657 196.683 -1.000 0000 0 +07.796 -35.657 +07.796 -35.657
05=HS_ 01 +27.134 -61.740 171.266 +0.000 0000 0 +28.474 -59.595 +25.793 -62.553 +27.134 -60.761 +27.134 -62.719
06=CSI 16 -17.107 +23.410 255.381 +0.000 0000 0 -15.126 +27.225 -19.890 +18.858 -17.107 +27.250 -17.107 +19.580
07=AX_ 01 -12.665 -23.810 209.259 -1.000 0000 0 -12.665 -23.810 -12.665 -23.810
08=BXI 03 -06.645 -28.565 203.775 +0.000 0000 0 -05.921 -26.831 -07.370 -30.299 -06.645 -27.331 -06.645 -29.799
20230913.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 →

2023/20230913_op · OP · 4 frames · 85.7 MB · 09:55:00–09:58:37 UT

09:56:23 UT · 30 ms 09:55:00 UT · 30 ms 09:57:29 UT · 60 ms · over-exposed 09:58:37 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.