Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 5 January 2024

‹ 04.01.2024 2024 08.01.2024 ›

Photosphere sunspot drawing and RDS evaluation

05.01.2024 photosphere drawing

High-resolution scan (3224 px)

Time
10:20 UT
Observer
Başar COŞKUNOĞLU
g
7
f
55
R
125
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 17Group 1 · BXI – 17 Group 2 · DSC – 7Group 2 · DSC – 7 Group 3 · HS_ – 12Group 3 · HS_ – 12 Group 4 · CSO – 5Group 4 · CSO – 5 Group 5 · AX_ – 2Group 5 · AX_ – 2 Group 6 · DSI – 6Group 6 · DSI – 6 Group 7 · CSI – 6Group 7 · CSI – 6
RDS data file (.gzd) 
[Gözlem]
Tarih=5.01.2024
Saat=10:20
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=0.16
Enlemaçısı=-3.45
Boylamaçısı=169.08
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19897
AyRasatNo=2
RasatÖnceki=04.01.2024
RasatSonraki=08.01.2024

[Leke Grupları]
Grupsayısı=7:5:2
LekeSayısı=55:43:12
RölatifSayı=125:93:32
01=BXI 17 +22.286 +03.807 172.887 19.885 0000 0 +24.970 +06.893 +20.476 +00.721 +21.431 +06.617 +23.445 +01.380
02=DSC 07 +18.598 -17.970 151.110 14.757 0000 0 +20.534 -13.997 +16.661 -21.944 +17.848 -14.475 +19.634 -21.275
03=HS_ 12 +05.150 -18.686 150.394 +0.000 0000 0 +07.910 -17.649 +02.939 -19.723 +05.150 -18.149 +05.150 -19.223
04=CSO 05 +07.376 -23.899 145.181 49.895 0000 0 +09.362 -22.355 +05.390 -25.443 +08.658 -23.700 +06.340 -25.219
05=AX_ 02 +10.801 -34.999 134.810 -1.000 0000 0 +10.801 -34.999 +10.801 -34.999
06=DSI 06 -13.608 +51.829 220.909 +0.000 0000 0 -12.255 +55.390 -14.962 +48.619 -13.608 +54.839 -13.608 +48.819
07=CSI 06 -18.407 -78.270 090.810 41.424 0000 0 -15.334 -73.727 -21.480 -82.814 -20.668 -74.939 -16.223 -79.993
20240105.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 →

2024/20240105_bc · BC · 7 frames · 150.0 MB · 10:34:01–10:39:17 UT

10:36:48 UT · 30 ms 10:35:54 UT · 30 ms 10:35:16 UT · 30 ms 10:34:01 UT · 40 ms · over-exposed 10:38:23 UT · 60 ms · over-exposed 10:37:46 UT · 60 ms · over-exposed 10:39:17 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.