Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 23 August 2022

‹ 22.08.2022 2022 24.08.2022 ›

Photosphere sunspot drawing and RDS evaluation

23.08.2022 photosphere drawing

High-resolution scan (3229 px)

Time
09:50 UT
Observer
E.EGE=Ö.Ö.
g
3
f
12
R
42
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DSI – 7Group 1 · DSI – 7 Group 2 · BXO – 4Group 2 · BXO – 4 Group 3 · HA_ – 1Group 3 · HA_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=23.08.2022
Saat=09:50
Gözlemci=E.EGE=Ö.Ö.
KontrolEden=Ergün EGE
Durumaçısı=18.64
Enlemaçısı=6.97
Boylamaçısı=287.37
Boylamfark=1
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.5
Sırano=19530
AyRasatNo=23
RasatÖnceki=22.08.2022
RasatSonraki=24.08.2022

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=12:7:5
RölatifSayı=42:17:25
01=DSI 07 +30.458 +01.320 288.402 +0.000 0000 0 +32.134 +05.546 +28.782 -03.482 +30.458 +05.346 +30.458 -03.282
02=BXO 04 -21.843 -51.318 236.520 +0.000 0000 0 -20.627 -48.847 -23.600 -53.789 -21.843 -49.470 -21.843 -53.589
03=HA_ 01 -14.779 -73.830 214.287 +0.000 0000 0 -14.102 -71.132 -15.456 -75.340 -14.779 -72.226 -14.779 -75.434
20220823.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 →

2022/20220823_ee · EE · 8 frames · 171.4 MB · 09:56:24–10:15:25 UT

10:03:00 UT · 40 ms 10:03:36 UT · 50 ms 10:15:25 UT · 30 ms 09:56:24 UT · 30 ms 09:57:50 UT · 30 ms 10:08:47 UT · 50 ms 10:09:25 UT · 60 ms · over-exposed 10:14:49 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.