Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 4 May 2023

‹ 03.05.2023 2023 07.05.2023 ›

Photosphere sunspot drawing and RDS evaluation

04.05.2023 photosphere drawing

High-resolution scan (3235 px)

Time
08:08 UT
Observer
Burçin TANIK
g
7
f
50
R
120
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 9Group 1 · BXI – 9 Group 2 · EHC – 13Group 2 · EHC – 13 Group 3 · DHI – 5Group 3 · DHI – 5 Group 4 · EHC – 17Group 4 · EHC – 17 Group 5 · BXI – 2Group 5 · BXI – 2 Group 6 · HH_ – 1Group 6 · HH_ – 1 Group 7 · BXI – 3Group 7 · BXI – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=4.05.2023
Saat=08:08
Gözlemci=Burçin TANIK
KontrolEden=Ergün EGE
Durumaçısı=-23.55
Enlemaçısı=-3.88
Boylamaçısı=179.22
Boylamfark=2
GKalite=3
GDurum=B.A
Kuzeyaçısı=-1.0
Sırano=19705
AyRasatNo=4
RasatÖnceki=03.05.2023
RasatSonraki=07.05.2023

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=50:44:6
RölatifSayı=120:84:36
01=BXI 09 +17.787 +35.254 214.474 26.177 0000 0 +21.168 +40.462 +14.407 +30.460 +15.832 +38.425 +19.619 +30.684
02=EHC 13 +11.286 -31.163 148.570 23.816 0000 0 +13.958 -25.834 +08.614 -36.491 +09.515 -27.267 +12.781 -34.696
03=DHI 05 +14.624 -43.760 136.144 22.128 0000 0 +16.253 -39.787 +12.995 -46.366 +13.851 -41.507 +15.201 -44.829
04=EHC 17 +06.704 -60.238 118.982 16.321 0000 0 +09.540 -54.807 +04.353 -65.669 +07.430 -56.284 +05.188 -63.965
05=BXI 02 -16.624 -40.809 138.411 +0.000 0000 0 -16.136 -39.136 -17.112 -42.482 -16.624 -39.636 -16.624 -41.982
06=HH_ 01 -08.767 -52.599 126.621 +0.000 0000 0 -07.762 -51.296 -09.772 -53.902 -08.767 -51.796 -08.767 -53.402
07=BXI 03 -06.223 -77.713 101.507 +0.000 0000 0 -04.991 -75.395 -07.454 -80.310 -06.223 -75.595 -06.223 -79.831
20230504.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 →

2023/20230504_bto · BTO · 3 frames · 64.3 MB · 08:14:29–08:17:16 UT

08:17:16 UT · 30 ms 08:14:29 UT · 30 ms 08:16:20 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.