Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 9 August 2021

‹ 08.08.2021 2021 10.08.2021 ›

Photosphere sunspot drawing and RDS evaluation

09.08.2021 photosphere drawing

High-resolution scan (3230 px)

Time
08:00 UT
Observer
Ergün EGE
g
1
f
1
R
11
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=9.08.2021
Saat=08:00
Gözlemci=Ergün EGE
KontrolEden=Burçin TANIK
Durumaçısı=14.04
Enlemaçısı=6.33
Boylamaçısı=250.98
Boylamfark=2
GKalite=4
GDurum=
Kuzeyaçısı=-0.4
Sırano=19241
AyRasatNo=9
RasatÖnceki=08.08.2021
RasatSonraki=10.08.2021

[Leke Grupları]
Grupsayısı=1:1:0
LekeSayısı=1:1:0
RölatifSayı=11:11:0
01=AX_ 01 +22.251 -58.590 192.390 +0.000 0000 0 +22.591 -58.179 +21.911 -59.100 +22.251 -58.630 +22.251 -58.550
20210809.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 →

2021/20210809_ee · EE · 13 frames · 278.6 MB · 08:01:39–08:30:06 UT

08:28:13 UT · 40 ms 08:02:55 UT · 60 ms 08:23:42 UT · 60 ms 08:14:50 UT · 40 ms 08:04:03 UT · 70 ms 08:01:39 UT · 40 ms 08:22:39 UT · 40 ms 08:29:16 UT · 60 ms 08:15:45 UT · 60 ms 08:06:11 UT · 80 ms · over-exposed 08:24:40 UT · 80 ms · over-exposed 08:17:08 UT · 80 ms · over-exposed 08:30:06 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.