Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 23 September 2023

‹ 22.09.2023 2023 24.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

23.09.2023 photosphere drawing

High-resolution scan (3224 px)

Time
10:05 UT
Observer
B.TANIK=K.Y.
g
11
f
96
R
206
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · EKC – 14Group 2 · EKC – 14 Group 3 · CSI – 14Group 3 · CSI – 14 Group 4 · BXI – 9Group 4 · BXI – 9 Group 5 · CKI – 20Group 5 · CKI – 20 Group 6 · HS_ – 2Group 6 · HS_ – 2 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · AX_ – 1Group 9 · AX_ – 1 Group 10 · AX_ – 3Group 10 · AX_ – 3 Group 11 · CSI – 29Group 11 · CSI – 29
RDS data file (.gzd) 
[Gözlem]
Tarih=23.09.2023
Saat=10:05
Gözlemci=B.TANIK=K.Y.
KontrolEden=Ergün EGE
Durumaçısı=25.21
Enlemaçısı=7.03
Boylamaçısı=100.29
Boylamfark=1
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.7
Sırano=19830
AyRasatNo=22
RasatÖnceki=22.09.2023
RasatSonraki=24.09.2023

[Leke Grupları]
Grupsayısı=11:8:3
LekeSayısı=96:63:33
RölatifSayı=206:143:63
01=HS_ 01 +28.286 +70.753 171.430 +0.000 0000 0 +28.855 +72.565 +27.717 +68.941 +28.286 +72.650 +28.286 +69.441
02=EKC 14 +28.956 +44.845 145.135 11.322 0000 0 +30.897 +51.128 +27.150 +38.563 +30.160 +49.753 +28.177 +40.526
03=CSI 14 +07.567 +37.600 137.296 +0.000 0000 0 +10.271 +42.762 +04.864 +31.249 +07.567 +42.562 +07.567 +31.449
04=BXI 09 +11.916 +09.215 109.505 +0.000 0000 0 +13.377 +11.598 +10.455 +06.832 +11.916 +11.398 +11.916 +07.320
05=CKI 20 +09.814 +00.925 101.215 +0.000 0000 0 +11.778 +04.248 +07.851 -02.398 +09.814 +04.480 +09.814 -02.198
06=HS_ 02 +18.545 -17.783 082.507 +0.000 0000 0 +19.346 -16.643 +17.744 -18.923 +18.545 -17.143 +18.545 -18.423
07=AX_ 02 +23.580 -23.628 076.662 +0.000 0000 0 +24.150 -23.340 +23.145 -23.916 +23.580 -23.840 +23.580 -23.416
08=AX_ 01 +22.411 -57.532 042.758 -1.000 0000 0 +22.411 -57.532 +22.411 -57.532
09=AX_ 01 -17.205 +77.434 177.724 -1.000 0000 0 -17.205 +77.434 -17.205 +77.434
10=AX_ 03 -22.928 -02.212 098.780 +0.000 0000 0 -22.489 -01.809 -23.366 -02.615 -22.928 -02.309 -22.928 -02.115
11=CSI 29 -11.676 -27.652 072.638 34.624 0000 0 -07.688 -21.981 -15.664 -33.322 -08.703 -23.204 -14.109 -31.800
20230923.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 →

2023/20230923_bto · BTO · 6 frames · 128.6 MB · 10:14:23–10:19:35 UT

10:15:32 UT · 40 ms 10:19:35 UT · 40 ms 10:17:36 UT · 30 ms 10:16:36 UT · 70 ms · over-exposed 10:18:29 UT · 70 ms · over-exposed 10:14:23 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.