Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 28 August 2023

‹ 27.08.2023 2023 29.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

28.08.2023 photosphere drawing

High-resolution scan (3236 px)

Time
07:30 UT
Observer
Ergün EGE
g
4
f
21
R
61
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · CSI – 13Group 2 · CSI – 13 Group 3 · CSI – 6Group 3 · CSI – 6 Group 4 · AX_ – 1Group 4 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=28.08.2023
Saat=07:30
Gözlemci=Ergün EGE
KontrolEden=Korhan YELKENCİ
Durumaçısı=19.98
Enlemaçısı=7.11
Boylamaçısı=85.04
Boylamfark=2
GKalite=3
GDurum=B.A , K.T
Kuzeyaçısı=-0.1
Sırano=19805
AyRasatNo=26
RasatÖnceki=27.08.2023
RasatSonraki=29.08.2023

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=21:14:7
RölatifSayı=61:34:27
01=AX_ 01 +30.585 +45.820 130.122 +0.000 0000 0 +30.916 +45.473 +30.254 +44.691 +30.585 +45.711 +30.585 +45.929
02=CSI 13 +10.630 +13.100 098.410 +0.000 0000 0 +13.167 +15.577 +08.930 +10.425 +10.630 +15.377 +10.630 +10.625
03=CSI 06 -09.556 -05.975 079.650 +0.000 0000 0 -07.803 -03.636 -11.308 -08.313 -09.556 -03.836 -09.556 -08.113
04=AX_ 01 -18.963 -38.290 047.110 +0.000 0000 0 -18.645 -37.811 -19.281 -38.247 -18.963 -38.572 -18.963 -38.800
20230828.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 →

2023/20230828_ee · EE · 1 frames · 21.4 MB · 07:45:10 UT

07:45:10 UT · 30 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.