Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 2 December 2023

‹ 28.11.2023 2023 03.12.2023 ›

Photosphere sunspot drawing and RDS evaluation

02.12.2023 photosphere drawing

High-resolution scan (3236 px)

Time
09:35 UT
Observer
Hikmet ÇAKMAK
g
7
f
24
R
94
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ?__ – 1Group 1 · ?__ – 1 Group 2 · CAI – 7Group 2 · CAI – 7 Group 3 · HA_ – 1Group 3 · HA_ – 1 Group 4 · EAC – 12Group 4 · EAC – 12 Group 5 · HA_ – 1Group 5 · HA_ – 1 Group 6 · HA_ – 1Group 6 · HA_ – 1 Group 7 · HA_ – 1Group 7 · HA_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=2.12.2023
Saat=09:35
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Süleyman FİŞEK
Durumaçısı=15.67
Enlemaçısı=0.78
Boylamaçısı=257.41
Boylamfark=1
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.4
Sırano=19878
AyRasatNo=1
RasatÖnceki=28.11.2023
RasatSonraki=03.12.2023

[Leke Grupları]
Grupsayısı=7:3:4
LekeSayısı=24:9:15
RölatifSayı=94:39:55
01=?__ 01 +18.207 +81.127 338.537 +0.000 0000 0 +18.894 +82.384 +17.521 +79.870 +18.207 +81.884 +18.207 +80.370
02=CAI 07 +11.495 +56.705 314.115 28.511 0000 0 +13.420 +60.316 +09.569 +53.940 +10.280 +58.616 +12.519 +54.488
03=HA_ 01 +08.331 -36.833 220.577 +0.000 0000 0 +09.494 -35.428 +07.167 -38.238 +08.331 -35.928 +08.331 -37.738
04=EAC 12 -17.977 +47.790 305.200 16.376 0000 0 -15.658 +52.873 -20.296 +42.706 -16.713 +51.770 -19.960 +43.630
05=HA_ 01 -08.283 +38.790 296.200 +0.000 0000 0 -07.564 +39.584 -09.200 +37.997 -08.283 +39.830 -08.283 +38.497
06=HA_ 01 -16.491 -25.465 231.945 +0.000 0000 0 -15.580 -24.689 -17.403 -26.241 -16.491 -25.189 -16.491 -25.741
07=HA_ 01 -14.379 -34.582 222.828 +0.000 0000 0 -13.166 -33.805 -15.593 -35.359 -14.379 -34.305 -14.379 -34.859
20231202.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 →

2023/20231202_hc · HC · 5 frames · 107.1 MB · 09:34:07–09:58:05 UT

09:45:43 UT · 40 ms 09:35:26 UT · 70 ms 09:34:07 UT · 40 ms 09:58:05 UT · 40 ms 09:44:49 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.