Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 30 June 2021

‹ 29.06.2021 2021 01.07.2021 ›

Photosphere sunspot drawing and RDS evaluation

30.06.2021 photosphere drawing

High-resolution scan (3226 px)

Time
08:15 UT
Observer
Olcay PLEVNE
g
3
f
21
R
51
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CRO – 3Group 1 · CRO – 3 Group 2 · CSO – 4Group 2 · CSO – 4 Group 3 · EKC – 14Group 3 · EKC – 14
RDS data file (.gzd) 
[Gözlem]
Tarih=30.06.2021
Saat=08:15
Gözlemci=Olcay PLEVNE
KontrolEden=Süleyman FİŞEK
Durumaçısı=-2.91
Enlemaçısı=2.79
Boylamaçısı=60.05
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19202
AyRasatNo=22
RasatÖnceki=29.06.2021
RasatSonraki=01.07.2021

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=21:3:18
RölatifSayı=51:13:38
01=CRO 03 +16.473 -53.500 007.450 +0.000 0000 0 +17.693 -51.712 +15.252 -54.298 +00.000 +00.000 +00.000 +00.000
02=CSO 04 -25.989 -02.984 057.660 15.770 0000 0 -24.589 +00.193 -27.388 -06.162 -25.810 -00.424 -26.642 -05.961
03=EKC 14 -18.454 -08.148 051.902 12.200 0000 0 -16.120 -01.924 -20.896 -14.372 -18.435 -05.213 -16.542 -14.800
20210630.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 →

2021/20210630_op · OP · 4 frames · 85.7 MB · 08:28:47–08:33:02 UT

08:33:02 UT · 40 ms 08:32:01 UT · 40 ms 08:28:47 UT · 60 ms · over-exposed 08:31:03 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.