Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 28 April 2022

‹ 27.04.2022 2022 29.04.2022 ›

Photosphere sunspot drawing and RDS evaluation

28.04.2022 photosphere drawing

High-resolution scan (3228 px)

Time
08:30 UT
Observer
Burçin TANIK
g
9
f
31
R
121
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CRI – 3Group 1 · CRI – 3 Group 2 · HK_ – 3Group 2 · HK_ – 3 Group 3 · CRI – 5Group 3 · CRI – 5 Group 4 · CHI – 8Group 4 · CHI – 8 Group 5 · CKI – 5Group 5 · CKI – 5 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · CHI – 4Group 7 · CHI – 4 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · HH_ – 1Group 9 · HH_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=28.04.2022
Saat=08:30
Gözlemci=Burçin TANIK
KontrolEden=Olcay PLEVNE
Durumaçısı=-24.57
Enlemaçısı=-4.46
Boylamaçısı=35.87
Boylamfark=2
GKalite=3
GDurum=G.T , K.T
Kuzeyaçısı=-0.7
Sırano=19419
AyRasatNo=20
RasatÖnceki=27.04.2022
RasatSonraki=29.04.2022

[Leke Grupları]
Grupsayısı=9:6:3
LekeSayısı=31:25:6
RölatifSayı=121:85:36
01=CRI 03 +19.761 +73.726 109.596 +0.000 0000 0 +20.865 +76.241 +18.657 +71.210 +19.761 +76.410 +19.761 +71.410
02=HK_ 03 +13.546 +72.802 108.672 +0.000 0000 0 +14.810 +76.215 +12.282 +69.390 +13.546 +75.715 +13.546 +69.890
03=CRI 05 +14.524 +62.658 098.528 +0.000 0000 0 +15.655 +64.210 +13.392 +61.106 +14.524 +64.100 +14.524 +61.306
04=CHI 08 +13.349 +40.992 076.862 54.390 0000 0 +16.390 +43.690 +10.309 +38.294 +15.583 +42.855 +10.718 +39.315
05=CKI 05 +10.744 -03.998 031.872 09.560 0000 0 +11.985 +02.555 +09.503 -10.550 +09.703 +01.533 +11.525 -09.981
06=AX_ 01 +12.847 -35.695 000.175 -1.000 0000 0 +12.847 -35.695 +12.847 -35.695
07=CHI 04 -19.414 -21.552 014.318 50.216 0000 0 -17.418 -19.771 -21.409 -23.334 -18.950 -20.215 -21.209 -22.812
08=AX_ 01 -17.414 -54.712 341.158 -1.000 0000 0 -17.414 -54.712 -17.414 -54.712
09=HH_ 01 -31.326 -59.281 336.589 +0.000 0000 0 -30.760 -57.521 -32.576 -61.400 -31.326 -57.841 -31.326 -60.720
20220428.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 →

2022/20220428_bto · BTO · 4 frames · 85.7 MB · 08:53:32–09:02:31 UT

09:02:31 UT · 30 ms 08:55:22 UT · 30 ms 08:53:32 UT · 60 ms · over-exposed 09:00:44 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.