Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 17 July 2023

‹ 16.07.2023 2023 18.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

17.07.2023 photosphere drawing

High-resolution scan (3230 px)

Time
08:29 UT
Observer
Ergün EGE
g
9
f
42
R
132
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 4Group 1 · BXO – 4 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · FSI – 14Group 3 · FSI – 14 Group 4 · DSC – 11Group 4 · DSC – 11 Group 5 · BXO – 4Group 5 · BXO – 4 Group 6 · CAO – 5Group 6 · CAO – 5 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · AX_ – 1Group 9 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=17.07.2023
Saat=08:29
Gözlemci=Ergün EGE
KontrolEden=Süleyman FİŞEK
Durumaçısı=4.52
Enlemaçısı=4.5
Boylamaçısı=279.85
Boylamfark=2
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.6
Sırano=19765
AyRasatNo=16
RasatÖnceki=16.07.2023
RasatSonraki=18.07.2023

[Leke Grupları]
Grupsayısı=9:5:4
LekeSayısı=42:34:8
RölatifSayı=132:84:48
01=BXO 04 +13.199 +42.609 322.459 +0.000 0000 0 +14.203 +45.470 +12.194 +40.172 +13.199 +44.847 +13.199 +40.372
02=AX_ 01 +20.870 +35.162 315.120 +0.000 0000 0 +20.303 +35.464 +19.871 +34.859 +20.870 +34.965 +20.870 +35.359
03=FSI 14 +23.345 -11.575 268.275 +0.000 0000 0 +26.546 -03.172 +20.144 -19.978 +23.345 -03.372 +23.345 -19.778
04=DSC 11 +06.957 -35.797 244.530 +0.000 0000 0 +09.577 -30.230 +04.338 -41.571 +06.957 -30.223 +06.957 -41.371
05=BXO 04 +23.803 -52.748 227.102 +0.000 0000 0 +24.830 -50.296 +22.776 -55.200 +23.803 -50.496 +23.803 -55.000
06=CAO 05 -22.250 +61.658 341.508 +0.000 0000 0 -18.601 +66.126 -25.449 +57.189 -22.250 +65.926 -22.250 +57.389
07=AX_ 01 -15.300 +09.545 289.395 +0.000 0000 0 -14.506 +09.924 -15.553 +09.166 -15.300 +09.424 -15.300 +09.666
08=AX_ 01 -07.237 -37.771 242.790 +0.000 0000 0 -06.586 -36.986 -07.889 -38.557 -07.237 -37.486 -07.237 -38.560
09=AX_ 01 -09.533 -83.495 196.355 +0.000 0000 0 -08.920 -80.786 -10.147 -86.203 -09.533 -81.286 -09.533 -85.704
20230717.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 →

2023/20230717_ee · EE · 8 frames · 171.4 MB · 08:14:02–08:35:48 UT

08:15:17 UT · 30 ms 08:14:02 UT · 30 ms 08:15:58 UT · 40 ms 08:34:26 UT · 30 ms 08:35:12 UT · 40 ms · over-exposed 08:17:41 UT · 50 ms · over-exposed 08:35:48 UT · 50 ms · over-exposed 08:18:17 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.