Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 5 October 2021

‹ 04.10.2021 2021 07.10.2021 ›

Photosphere sunspot drawing and RDS evaluation

05.10.2021 photosphere drawing

High-resolution scan (3231 px)

Time
06:55 UT
Observer
Süleyman FİŞEK
g
3
f
15
R
45
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CAI – 12Group 1 · CAI – 12 Group 2 · HH_ – 1Group 2 · HH_ – 1 Group 3 · AX_ – 2Group 3 · AX_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=5.10.2021
Saat=06:55
Gözlemci=Süleyman FİŞEK
KontrolEden=Burçin TANIK
Durumaçısı=26.17
Enlemaçısı=6.5
Boylamaçısı=218.78
Boylamfark=3
GKalite=3
GDurum=G.T , B.A , K.T
Kuzeyaçısı=-0.4
Sırano=19293
AyRasatNo=4
RasatÖnceki=04.10.2021
RasatSonraki=07.10.2021

[Leke Grupları]
Grupsayısı=3:3:0
LekeSayısı=15:15:0
RölatifSayı=45:45:0
01=CAI 12 +31.708 +23.234 241.804 06.510 0000 0 +33.848 +28.677 +29.567 +17.791 +32.721 +27.595 +31.708 +17.991
02=HH_ 01 +16.923 -62.182 156.388 +0.000 0000 0 +18.384 -60.120 +15.462 -64.243 +16.923 -60.620 +16.923 -63.743
03=AX_ 02 +22.134 -64.806 153.764 +0.000 0000 0 +22.552 -63.893 +21.715 -65.719 +22.134 -64.393 +22.134 -65.219
20211005.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 →

2021/20211005_sf · SF · 4 frames · 85.7 MB · 07:32:43–07:38:25 UT

07:34:46 UT · 60 ms · over-exposed 07:38:25 UT · 40 ms 07:32:43 UT · 30 ms 07:36:03 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.