Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 4 August 2022

‹ 03.08.2022 2022 05.08.2022 ›

Photosphere sunspot drawing and RDS evaluation

04.08.2022 photosphere drawing

High-resolution scan (3233 px)

Time
07:20 UT
Observer
Burçin TANIK
g
2
f
19
R
39
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ESI – 18Group 1 · ESI – 18 Group 2 · HS_ – 1Group 2 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=4.08.2022
Saat=07:20
Gözlemci=Burçin TANIK
KontrolEden=Korhan YELKENCİ
Durumaçısı=12.07
Enlemaçısı=5.99
Boylamaçısı=179.92
Boylamfark=3
GKalite=3
GDurum=G.T , B.A , K.T
Kuzeyaçısı=0.1
Sırano=19511
AyRasatNo=4
RasatÖnceki=03.08.2022
RasatSonraki=05.08.2022

[Leke Grupları]
Grupsayısı=2:0:2
LekeSayısı=19:0:19
RölatifSayı=39:0:39
01=ESI 18 -14.653 +27.662 207.582 16.546 0000 0 -12.627 +33.355 -16.680 +21.968 -13.305 +32.108 -16.165 +22.428
02=HS_ 01 -17.781 -53.897 126.230 +0.000 0000 0 -16.947 -52.842 -18.616 -54.953 -17.781 -53.341 -17.781 -54.452
20220804.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 →

2022/20220804_bto · BTO · 5 frames · 107.1 MB · 07:26:18–07:31:18 UT

07:31:18 UT · 30 ms 07:30:08 UT · 30 ms 07:26:18 UT · 60 ms · over-exposed 07:27:50 UT · 70 ms · over-exposed 07:29:07 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.