Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 4 November 2021

‹ 03.11.2021 2021 05.11.2021 ›

Photosphere sunspot drawing and RDS evaluation

04.11.2021 photosphere drawing

High-resolution scan (3232 px)

Time
08:50 UT
Observer
Burçin TANIK
g
2
f
8
R
28
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CAO – 7Group 1 · CAO – 7 Group 2 · HS_ – 1Group 2 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=4.11.2021
Saat=08:50
Gözlemci=Burçin TANIK
KontrolEden=Olcay PLEVNE
Durumaçısı=23.84
Enlemaçısı=4.04
Boylamaçısı=182.04
Boylamfark=2
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.5
Sırano=19315
AyRasatNo=3
RasatÖnceki=03.11.2021
RasatSonraki=05.11.2021

[Leke Grupları]
Grupsayısı=2:2:0
LekeSayısı=8:8:0
RölatifSayı=28:28:0
01=CAO 07 +17.512 +28.129 210.169 +0.000 0000 0 +22.311 +29.928 +12.714 +26.330 +17.512 +29.728 +17.512 +26.530
02=HS_ 01 +16.658 -28.330 153.710 +0.000 0000 0 +17.758 -27.790 +15.558 -29.581 +16.658 -27.934 +16.658 -28.726
20211104.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 →

2021/20211104_bto · BTO · 5 frames · 107.1 MB · 08:55:32–09:01:35 UT

09:00:14 UT · 30 ms 08:55:32 UT · 40 ms 09:01:35 UT · 60 ms · over-exposed 08:58:58 UT · 60 ms · over-exposed 08:57:17 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.