Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 28 June 2021

‹ 26.06.2021 2021 29.06.2021 ›

Photosphere sunspot drawing and RDS evaluation

28.06.2021 photosphere drawing

High-resolution scan (3230 px)

Time
07:50 UT
Observer
Ergün EGE
g
3
f
9
R
39
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · DRI – 3Group 2 · DRI – 3 Group 3 · DSI – 5Group 3 · DSI – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=28.06.2021
Saat=07:50
Gözlemci=Ergün EGE
KontrolEden=Oğuzhan ÇAKIR
Durumaçısı=-3.83
Enlemaçısı=2.57
Boylamaçısı=86.75
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19200
AyRasatNo=20
RasatÖnceki=26.06.2021
RasatSonraki=29.06.2021

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=9:1:8
RölatifSayı=39:11:28
01=AX_ 01 +16.343 -78.610 008.140 +0.000 0000 0 +16.958 -76.631 +15.728 -80.588 +16.343 -77.132 +16.343 -80.890
02=DRI 03 -26.590 -29.594 057.156 +0.000 0000 0 -25.477 -26.592 -27.704 -32.596 -26.590 -26.792 -26.590 -32.396
03=DSI 05 -18.464 -35.582 051.168 +0.000 0000 0 -17.164 -30.537 -19.764 -40.627 -18.464 -30.737 -18.464 -40.427
20210628.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 →

2021/20210628_ee · EE · 8 frames · 171.4 MB · 08:08:16–08:17:16 UT

08:13:07 UT · 40 ms 08:14:23 UT · 30 ms 08:16:25 UT · 40 ms 08:10:43 UT · 40 ms 08:17:16 UT · 70 ms · over-exposed 08:08:16 UT · 70 ms · over-exposed 08:11:58 UT · 80 ms · over-exposed 08:15:18 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.