Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 28 December 2023

‹ 27.12.2023 2023 29.12.2023 ›

Photosphere sunspot drawing and RDS evaluation

28.12.2023 photosphere drawing

High-resolution scan (3237 px)

Time
09:30 UT
Observer
Burçin TANIK
g
7
f
39
R
109
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 7Group 1 · BXI – 7 Group 2 · DAC – 15Group 2 · DAC – 15 Group 3 · EKO – 4Group 3 · EKO – 4 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · HH_ – 1Group 5 · HH_ – 1 Group 6 · ?__ – 4Group 6 · ?__ – 4 Group 7 · BXI – 7Group 7 · BXI – 7
RDS data file (.gzd) 
[Gözlem]
Tarih=28.12.2023
Saat=09:30
Gözlemci=Burçin TANIK
KontrolEden=Ergün EGE
Durumaçısı=4.05
Enlemaçısı=-2.51
Boylamaçısı=274.9
Boylamfark=1
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.4
Sırano=19893
AyRasatNo=16
RasatÖnceki=27.12.2023
RasatSonraki=29.12.2023

[Leke Grupları]
Grupsayısı=7:2:5
LekeSayısı=39:22:17
RölatifSayı=109:42:67
01=BXI 07 +07.386 +52.181 327.810 +0.000 0000 0 +08.560 +54.501 +06.717 +49.862 +07.386 +54.000 +07.386 +50.361
02=DAC 15 +14.827 +28.318 303.218 19.614 0000 0 +16.589 +32.330 +13.640 +24.603 +14.580 +30.582 +15.900 +25.405
03=EKO 04 -20.338 +68.245 343.145 13.624 0000 0 -18.800 +75.457 -22.596 +61.330 -19.261 +73.648 -21.977 +62.358
04=AX_ 01 -20.405 +32.918 307.818 -1.000 0000 0 -20.405 +32.918 -20.405 +32.918
05=HH_ 01 -19.400 +26.680 300.968 +0.000 0000 0 -17.895 +27.627 -20.905 +24.509 -19.400 +27.739 -19.400 +25.621
06=?__ 04 -04.905 +08.492 283.392 +0.000 0000 0 -04.191 +09.705 -05.620 +07.278 -04.905 +09.205 -04.905 +07.778
07=BXI 07 -12.226 -53.660 221.240 +0.000 0000 0 -11.535 -49.659 -12.918 -57.662 -12.226 -50.159 -12.226 -57.161
20231228.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 →

2023/20231228_bto · BTO · 6 frames · 128.6 MB · 09:40:51–09:46:33 UT

09:44:25 UT · 30 ms 09:46:33 UT · 40 ms 09:41:53 UT · 30 ms 09:40:51 UT · 70 ms · over-exposed 09:42:56 UT · 70 ms · over-exposed 09:45:41 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.