Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 11 February 2022

‹ 10.02.2022 2022 12.02.2022 ›

Photosphere sunspot drawing and RDS evaluation

11.02.2022 photosphere drawing

High-resolution scan (3234 px)

Time
08:00 UT
Observer
Olcay PLEVNE
g
5
f
15
R
65
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · FHI – 7Group 2 · FHI – 7 Group 3 · CSI – 3Group 3 · CSI – 3 Group 4 · BXO – 2Group 4 · BXO – 2 Group 5 · CRO – 2Group 5 · CRO – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=11.02.2022
Saat=08:00
Gözlemci=Olcay PLEVNE
KontrolEden=Ergün EGE
Durumaçısı=-16.09
Enlemaçısı=-6.65
Boylamaçısı=318.31
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.6
Sırano=19373
AyRasatNo=7
RasatÖnceki=10.02.2022
RasatSonraki=12.02.2022

[Leke Grupları]
Grupsayısı=5:2:3
LekeSayısı=15:8:7
RölatifSayı=65:28:37
01=AX_ 01 +16.122 +68.229 026.539 +0.000 0000 0 +16.738 +69.485 +15.507 +66.973 +16.122 +68.985 +16.122 +67.473
02=FHI 07 +22.430 +16.785 335.950 03.153 0000 0 +24.147 +25.244 +20.713 +08.325 +22.718 +24.395 +23.564 +08.857
03=CSI 03 -21.681 +72.114 030.424 79.114 0000 0 -16.279 +74.548 -27.840 +69.679 -17.385 +72.604 -26.574 +70.821
04=BXO 02 -21.604 +23.831 342.141 +0.000 0000 0 -21.108 +26.670 -22.100 +21.596 -21.604 +25.868 -21.604 +21.794
05=CRO 02 -09.606 -78.292 240.180 +0.000 0000 0 -08.865 -74.950 -10.348 -81.634 -09.606 -75.450 -09.606 -81.134
20220211.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 →

2022/20220211_op · OP · 4 frames · 85.7 MB · 08:02:50–08:08:02 UT

08:02:50 UT · 40 ms 08:05:16 UT · 40 ms 08:08:02 UT · 70 ms · over-exposed 08:06:12 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.