Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 21 November 2023

‹ 16.11.2023 2023 22.11.2023 ›

Photosphere sunspot drawing and RDS evaluation

21.11.2023 photosphere drawing

High-resolution scan (3233 px)

Time
09:30 UT
Observer
H.ÇAKMAK=K.Y.
g
11
f
53
R
163
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 3Group 1 · BXO – 3 Group 2 · HR_ – 1Group 2 · HR_ – 1 Group 3 · CAO – 5Group 3 · CAO – 5 Group 4 · HA_ – 1Group 4 · HA_ – 1 Group 5 · HA_ – 8Group 5 · HA_ – 8 Group 6 · CAI – 6Group 6 · CAI – 6 Group 7 · BXI – 11Group 7 · BXI – 11 Group 8 · DAC – 15Group 8 · DAC – 15 Group 9 · AX_ – 1Group 9 · AX_ – 1 Group 10 · HA_ – 1Group 10 · HA_ – 1 Group 11 · HA_ – 1Group 11 · HA_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=21.11.2023
Saat=09:30
Gözlemci=H.ÇAKMAK=K.Y.
KontrolEden=Korhan YELKENCİ
Durumaçısı=19.58
Enlemaçısı=2.15
Boylamaçısı=42.44
Boylamfark=1
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.4
Sırano=19874
AyRasatNo=14
RasatÖnceki=16.11.2023
RasatSonraki=22.11.2023

[Leke Grupları]
Grupsayısı=11:6:5
LekeSayısı=53:24:29
RölatifSayı=163:84:79
01=BXO 03 +07.419 -31.691 010.749 +0.000 0000 0 +07.774 -30.920 +07.630 -33.290 +07.419 -31.600 +07.419 -32.376
02=HR_ 01 +18.341 -44.844 357.596 +0.000 0000 0 +18.875 -44.396 +17.807 -45.292 +18.341 -44.896 +18.341 -44.792
03=CAO 05 +24.147 -51.297 351.143 28.167 0000 0 +26.634 -46.735 +21.660 -55.859 +22.527 -48.516 +25.968 -54.964
04=HA_ 01 +10.862 -54.125 348.315 +0.000 0000 0 +11.483 -53.398 +10.241 -54.852 +10.862 -53.898 +10.862 -54.352
05=HA_ 08 +20.735 -57.380 345.600 +0.000 0000 0 +22.228 -53.216 +19.243 -61.543 +20.735 -53.716 +20.735 -61.440
06=CAI 06 +18.953 -64.672 337.768 23.797 0000 0 +20.949 -60.630 +16.957 -68.715 +17.867 -62.339 +20.148 -67.523
07=BXI 11 -09.160 +16.833 059.273 22.885 0000 0 -07.398 +19.545 -10.923 +14.121 -08.503 +18.994 -10.314 +14.699
08=DAC 15 -14.164 -28.292 014.148 17.460 0000 0 -12.144 -24.440 -16.184 -32.540 -13.252 -25.336 -15.270 -31.935
09=AX_ 01 -17.464 -40.418 002.220 -1.000 0000 0 -17.464 -40.418 -17.464 -40.418
10=HA_ 01 -11.785 -69.530 332.910 +0.000 0000 0 -11.178 -68.950 -12.393 -70.964 -11.785 -69.230 -11.785 -70.370
11=HA_ 01 -16.689 -73.886 328.554 +0.000 0000 0 -15.845 -72.522 -17.534 -75.249 -16.689 -73.220 -16.689 -74.750
20231121.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 →

2023/20231121_hc · HC · 5 frames · 107.1 MB · 09:30:32–09:48:38 UT

09:30:32 UT · 30 ms 09:47:08 UT · 30 ms 09:38:00 UT · 30 ms 09:48:38 UT · 60 ms · over-exposed 09:36:28 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.