Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 28 July 2022

‹ 27.07.2022 2022 29.07.2022 ›

Photosphere sunspot drawing and RDS evaluation

28.07.2022 photosphere drawing

High-resolution scan (3231 px)

Time
07:45 UT
Observer
Burçin TANIK
g
4
f
8
R
48
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 3Group 1 · AX_ – 3 Group 2 · HS_ – 1Group 2 · HS_ – 1 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · BXO – 2Group 4 · BXO – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=28.07.2022
Saat=07:45
Gözlemci=Burçin TANIK
KontrolEden=Olcay PLEVNE
Durumaçısı=9.29
Enlemaçısı=5.48
Boylamaçısı=272.27
Boylamfark=2
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.3
Sırano=19504
AyRasatNo=27
RasatÖnceki=27.07.2022
RasatSonraki=29.07.2022

[Leke Grupları]
Grupsayısı=4:1:3
LekeSayısı=8:3:5
RölatifSayı=48:13:35
01=AX_ 03 +19.134 -49.526 222.744 +0.000 0000 0 +20.440 -48.442 +18.223 -50.609 +00.000 +00.000 +00.000 +00.000
02=HS_ 01 -25.450 +29.806 302.760 +0.000 0000 0 -23.796 +30.821 -26.295 +28.790 -25.450 +30.321 -25.450 +29.291
03=AX_ 02 -15.431 +18.104 290.374 +0.000 0000 0 -15.171 +18.380 -15.690 +17.827 -15.431 +17.881 -15.431 +18.327
04=BXO 02 -15.196 -68.742 203.528 17.797 0000 0 -14.920 -65.667 -16.300 -71.817 -14.404 -66.323 -16.100 -71.617
20220728.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 →

2022/20220728_bto · BTO · 7 frames · 150.0 MB · 07:54:57–08:03:51 UT

07:57:32 UT · 30 ms 07:58:42 UT · 30 ms 08:02:59 UT · 30 ms 07:54:57 UT · 60 ms · over-exposed 08:00:09 UT · 60 ms · over-exposed 08:03:51 UT · 60 ms · over-exposed 08:02:01 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.