Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 25 December 2022

‹ 24.12.2022 2022 26.12.2022 ›

Photosphere sunspot drawing and RDS evaluation

25.12.2022 photosphere drawing

High-resolution scan (3234 px)

Time
11:45 UT
Observer
Hikmet ÇAKMAK
g
7
f
51
R
121
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HA_ – 2Group 1 · HA_ – 2 Group 2 · EAC – 31Group 2 · EAC – 31 Group 3 · HK_ – 5Group 3 · HK_ – 5 Group 4 · HA_ – 3Group 4 · HA_ – 3 Group 5 · HA_ – 1Group 5 · HA_ – 1 Group 6 · BXO – 7Group 6 · BXO – 7 Group 7 · BXO – 2Group 7 · BXO – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=25.12.2022
Saat=11:45
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Ergün EGE
Durumaçısı=5.34
Enlemaçısı=-2.18
Boylamaçısı=90.75
Boylamfark=0
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=-0.4
Sırano=19624
AyRasatNo=11
RasatÖnceki=24.12.2022
RasatSonraki=26.12.2022

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=51:41:10
RölatifSayı=121:81:40
01=HA_ 02 +18.757 +33.238 123.988 +0.000 0000 0 +19.669 +35.111 +17.844 +31.365 +18.757 +34.611 +18.757 +31.865
02=EAC 31 +22.156 +20.484 111.234 17.870 0000 0 +25.198 +26.280 +19.114 +14.941 +20.518 +24.791 +23.232 +16.334
03=HK_ 05 +22.711 +04.572 095.322 +0.000 0000 0 +25.132 +06.380 +20.289 +02.763 +22.711 +05.880 +22.711 +03.263
04=HA_ 03 +24.677 -43.927 046.823 +0.000 0000 0 +25.353 -42.630 +24.100 -45.225 +24.677 -43.129 +24.677 -44.724
05=HA_ 01 -15.560 +70.620 160.812 +0.000 0000 0 -14.760 +70.885 -16.361 +69.240 -15.560 +70.943 -15.560 +70.298
06=BXO 07 -34.370 -23.435 067.315 12.880 0000 0 -32.748 -17.823 -35.993 -29.470 -33.366 -18.599 -35.371 -28.500
07=BXO 02 -19.869 -62.535 028.215 25.957 0000 0 -19.400 -60.772 -20.698 -64.297 -20.513 -61.520 -19.315 -63.982
20221225.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 →

2022/20221225_hc · HC · 6 frames · 128.6 MB · 11:55:12–12:06:32 UT

12:06:32 UT · 30 ms 11:58:03 UT · 40 ms 12:05:23 UT · 30 ms 12:03:38 UT · 40 ms 12:04:31 UT · 70 ms · over-exposed 11:55:12 UT · 40 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.