Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 7 September 2023

‹ 06.09.2023 2023 09.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

07.09.2023 photosphere drawing

High-resolution scan (3230 px)

Time
11:00 UT
Observer
Hikmet ÇAKMAK
g
8
f
57
R
137
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EAC – 23Group 1 · EAC – 23 Group 2 · BXO – 4Group 2 · BXO – 4 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · DAI – 15Group 4 · DAI – 15 Group 5 · BXI – 3Group 5 · BXI – 3 Group 6 · BXI – 8Group 6 · BXI – 8 Group 7 · HR_ – 1Group 7 · HR_ – 1 Group 8 · AX_ – 2Group 8 · AX_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=7.09.2023
Saat=11:00
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Olcay PLEVNE
Durumaçısı=22.49
Enlemaçısı=7.25
Boylamaçısı=311.02
Boylamfark=1
GKalite=3
GDurum=G.T , Y.B , H.S
Kuzeyaçısı=-0.5
Sırano=19815
AyRasatNo=7
RasatÖnceki=06.09.2023
RasatSonraki=09.09.2023

[Leke Grupları]
Grupsayısı=8:6:2
LekeSayısı=57:54:3
RölatifSayı=137:114:23
01=EAC 23 +15.830 +29.591 340.611 06.850 0000 0 +18.423 +35.510 +13.237 +23.671 +14.310 +35.340 +15.419 +24.574
02=BXO 04 +21.326 +28.816 339.836 +0.000 0000 0 +22.330 +30.356 +20.619 +27.275 +21.326 +29.857 +21.326 +27.775
03=AX_ 01 +15.279 +12.281 323.301 -1.000 0000 0 +15.279 +12.281 +15.279 +12.281
04=DAI 15 +16.155 -31.765 279.255 03.650 0000 0 +17.999 -27.248 +14.311 -36.282 +16.670 -28.123 +15.672 -35.531
05=BXI 03 +17.425 -57.588 253.432 21.866 0000 0 +18.489 -55.413 +16.361 -59.762 +16.808 -56.268 +17.969 -59.163
06=BXI 08 +24.470 -66.700 245.130 20.260 0000 0 +26.270 -62.231 +21.824 -69.784 +22.810 -63.820 +24.912 -68.787
07=HR_ 01 -06.541 +58.000 009.200 +0.000 0000 0 -06.213 +58.526 -06.868 +57.474 -06.541 +58.260 -06.541 +57.974
08=AX_ 02 -15.611 -24.276 286.744 +0.000 0000 0 -15.264 -22.963 -15.959 -25.589 -15.611 -23.463 -15.611 -25.890
20230907.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 →

2023/20230907_hc · HC · 2 frames · 42.9 MB · 11:00:21–11:02:59 UT

11:02:59 UT · 60 ms · over-exposed 11:00:21 UT · 30 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.