Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 13 December 2023

‹ 11.12.2023 2023 14.12.2023 ›

Photosphere sunspot drawing and RDS evaluation

13.12.2023 photosphere drawing

High-resolution scan (3230 px)

Time
10:00 UT
Observer
Olcay PLEVNE
g
6
f
55
R
115
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 4Group 1 · HS_ – 4 Group 2 · CSI – 26Group 2 · CSI – 26 Group 3 · BXI – 13Group 3 · BXI – 13 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · BXI – 4Group 5 · BXI – 4 Group 6 · BXI – 7Group 6 · BXI – 7
RDS data file (.gzd) 
[Gözlem]
Tarih=13.12.2023
Saat=10:00
Gözlemci=Olcay PLEVNE
KontrolEden=Burçin TANIK
Durumaçısı=11.05
Enlemaçısı=-0.63
Boylamaçısı=112.23
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19882
AyRasatNo=5
RasatÖnceki=11.12.2023
RasatSonraki=14.12.2023

[Leke Grupları]
Grupsayısı=6:4:2
LekeSayısı=55:44:11
RölatifSayı=115:84:31
01=HS_ 04 +17.998 +33.930 146.160 +0.000 0000 0 +19.413 +35.778 +16.582 +32.820 +17.998 +34.909 +17.998 +32.951
02=CSI 26 +05.580 +31.566 143.796 +0.000 0000 0 +06.759 +35.710 +03.358 +27.422 +05.580 +35.510 +05.580 +27.622
03=BXI 13 +12.202 +21.475 133.705 +0.000 0000 0 +16.398 +26.605 +08.600 +16.345 +12.202 +26.405 +12.202 +16.545
04=HS_ 01 +12.773 -69.501 042.729 +0.000 0000 0 +13.812 -67.808 +11.734 -71.194 +12.773 -68.308 +12.773 -70.694
05=BXI 04 -15.766 -18.781 093.449 +0.000 0000 0 -13.458 -17.950 -18.750 -19.611 +00.000 +00.000 +00.000 +00.000
06=BXI 07 -10.372 -47.310 064.920 +0.000 0000 0 -08.783 -44.843 -11.962 -49.778 -10.372 -45.430 -10.372 -49.578
20231213.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 →

2023/20231213_op · OP · 4 frames · 85.7 MB · 09:55:32–09:59:21 UT

09:57:14 UT · 40 ms 09:55:32 UT · 40 ms · over-exposed 09:58:03 UT · 70 ms · over-exposed 09:59:21 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.