Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 12 July 2023

‹ 11.07.2023 2023 13.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

12.07.2023 photosphere drawing

High-resolution scan (3226 px)

Time
08:10 UT
Observer
Olcay PLEVNE
g
11
f
65
R
175
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · ESC – 10Group 2 · ESC – 10 Group 3 · DAC – 16Group 3 · DAC – 16 Group 4 · AX_ – 4Group 4 · AX_ – 4 Group 5 · FAC – 6Group 5 · FAC – 6 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · BXI – 8Group 7 · BXI – 8 Group 8 · HS_ – 1Group 8 · HS_ – 1 Group 9 · HA_ – 11Group 9 · HA_ – 11 Group 10 · BXI – 5Group 10 · BXI – 5 Group 11 · CSI – 2Group 11 · CSI – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=12.07.2023
Saat=08:10
Gözlemci=Olcay PLEVNE
KontrolEden=Burçin TANIK
Durumaçısı=2.29
Enlemaçısı=4.01
Boylamaçısı=346.18
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19760
AyRasatNo=11
RasatÖnceki=11.07.2023
RasatSonraki=13.07.2023

[Leke Grupları]
Grupsayısı=11:5:6
LekeSayısı=65:37:28
RölatifSayı=175:87:88
01=AX_ 01 +23.267 +76.720 062.252 -1.000 0000 0 +23.267 +76.720 +23.267 +76.720
02=ESC 10 +24.636 +51.446 037.626 +0.000 0000 0 +26.122 +57.250 +23.151 +45.641 +24.636 +57.500 +24.636 +45.841
03=DAC 16 +10.177 +30.904 017.840 +0.000 0000 0 +12.162 +36.161 +08.192 +25.647 +10.177 +35.961 +10.177 +25.847
04=AX_ 04 +23.560 +13.703 359.883 +0.000 0000 0 +24.432 +14.780 +22.688 +12.625 +00.000 +00.000 +00.000 +00.000
05=FAC 06 +23.494 -77.650 268.530 +0.000 0000 0 +26.531 -67.896 +20.457 -87.405 +23.494 -68.960 +23.494 -87.205
06=HS_ 01 -09.799 +74.470 060.650 +0.000 0000 0 -08.484 +76.515 -11.114 +72.424 -09.799 +76.160 -09.799 +72.924
07=BXI 08 -18.452 +59.709 045.889 +0.000 0000 0 -17.301 +69.556 -19.603 +49.861 -18.452 +69.356 -18.452 +50.610
08=HS_ 01 -07.768 +21.530 007.233 +0.000 0000 0 -07.760 +21.834 -08.459 +20.273 -07.768 +21.811 -07.768 +21.250
09=HA_ 11 -21.290 -03.419 342.761 +0.000 0000 0 -17.374 +00.343 -24.683 -07.181 -21.290 -00.157 -21.290 -06.681
10=BXI 05 -14.839 -45.116 301.640 +0.000 0000 0 -14.151 -41.381 -15.528 -48.852 -14.839 -41.881 -14.839 -48.352
11=CSI 02 -15.168 -58.130 288.167 +0.000 0000 0 -13.768 -56.570 -16.569 -59.968 -15.168 -56.257 -15.168 -59.768
20230712.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 →

2023/20230712_op · OP · 4 frames · 85.7 MB · 08:06:07–08:08:47 UT

08:06:07 UT · 30 ms 08:07:15 UT · 30 ms 08:07:59 UT · 60 ms · over-exposed 08:08:47 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.