Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 21 May 2022

‹ 20.05.2022 2022 22.05.2022 ›

Photosphere sunspot drawing and RDS evaluation

21.05.2022 photosphere drawing

High-resolution scan (3230 px)

Time
09:55 UT
Observer
Ergün EGE
g
8
f
57
R
137
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 4Group 1 · BXO – 4 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · EAC – 30Group 3 · EAC – 30 Group 4 · BXI – 11Group 4 · BXI – 11 Group 5 · BXO – 4Group 5 · BXO – 4 Group 6 · BXO – 4Group 6 · BXO – 4 Group 7 · CSO – 2Group 7 · CSO – 2 Group 8 · AX_ – 1Group 8 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=21.05.2022
Saat=09:55
Gözlemci=Ergün EGE
KontrolEden=Süleyman FİŞEK
Durumaçısı=-19.09
Enlemaçısı=-1.96
Boylamaçısı=90.87
Boylamfark=1
GKalite=3
GDurum=
Kuzeyaçısı=-0.5
Sırano=19438
AyRasatNo=18
RasatÖnceki=20.05.2022
RasatSonraki=22.05.2022

[Leke Grupları]
Grupsayısı=8:5:3
LekeSayısı=57:50:7
RölatifSayı=137:100:37
01=BXO 04 +18.671 +33.220 124.900 +0.000 0000 0 +19.876 +35.802 +17.465 +30.637 +18.671 +35.602 +18.671 +30.837
02=AX_ 01 +13.606 +18.999 109.869 +0.000 0000 0 +14.990 +19.530 +13.114 +18.468 +13.606 +19.300 +13.606 +18.968
03=EAC 30 +21.216 +11.860 102.730 +0.000 0000 0 +23.984 +17.545 +18.447 +06.175 +21.216 +17.345 +21.216 +06.375
04=BXI 11 +12.665 -08.580 082.290 +0.000 0000 0 +14.876 -03.480 +10.453 -14.112 +12.665 -03.248 +12.665 -13.912
05=BXO 04 +13.270 -53.698 037.172 +0.000 0000 0 +13.856 -51.917 +12.199 -55.479 +13.270 -52.117 +13.270 -55.279
06=BXO 04 -16.548 +34.387 125.257 +0.000 0000 0 -15.413 +37.827 -17.683 +30.946 -16.548 +37.627 -16.548 +31.146
07=CSO 02 -18.540 -16.430 074.440 +0.000 0000 0 -17.679 -12.541 -19.401 -20.319 -18.540 -12.741 -18.540 -20.119
08=AX_ 01 -20.547 -77.889 012.981 +0.000 0000 0 -20.213 -76.685 -20.882 -79.920 -20.547 -76.771 -20.547 -79.700
20220521.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 →

2022/20220521_ee · EE · 8 frames · 171.4 MB · 10:01:18–10:26:14 UT

10:02:58 UT · 40 ms 10:13:13 UT · 40 ms 10:15:30 UT · 40 ms 10:26:14 UT · 40 ms 10:16:06 UT · 60 ms · over-exposed 10:25:33 UT · 60 ms · over-exposed 10:01:18 UT · 60 ms · over-exposed 10:13:50 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.