Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 24 April 2022

‹ 23.04.2022 2022 25.04.2022 ›

Photosphere sunspot drawing and RDS evaluation

24.04.2022 photosphere drawing

High-resolution scan (3227 px)

Time
10:20 UT
Observer
Özgecan ÖNALTAŞ
g
8
f
88
R
168
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DKC – 20Group 1 · DKC – 20 Group 2 · EKC – 43Group 2 · EKC – 43 Group 3 · AX_ – 3Group 3 · AX_ – 3 Group 4 · CSO – 3Group 4 · CSO – 3 Group 5 · CSI – 5Group 5 · CSI – 5 Group 6 · CSI – 10Group 6 · CSI – 10 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · HS_ – 2Group 8 · HS_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=24.04.2022
Saat=10:20
Gözlemci=Özgecan ÖNALTAŞ
KontrolEden=Ergün EGE
Durumaçısı=-25.13
Enlemaçısı=-4.83
Boylamaçısı=87.71
Boylamfark=1
GKalite=4
GDurum=G.T
Kuzeyaçısı=-0.1
Sırano=19415
AyRasatNo=16
RasatÖnceki=23.04.2022
RasatSonraki=25.04.2022

[Leke Grupları]
Grupsayısı=8:6:2
LekeSayısı=88:84:4
RölatifSayı=168:144:24
01=DKC 20 +19.297 +20.547 108.257 43.300 0000 0 +22.448 +24.832 +16.146 +16.262 +17.170 +23.747 +20.930 +19.585
02=EKC 43 +13.935 +15.959 103.669 00.631 0000 0 +16.195 +09.822 +11.674 +22.970 +13.494 +20.593 +13.598 +11.920
03=AX_ 03 +16.718 -00.489 087.221 +0.000 0000 0 +17.565 +00.261 +15.870 -01.239 +16.718 -00.239 +16.718 -00.739
04=CSO 03 +12.555 -13.247 074.463 25.401 0000 0 +15.500 -08.961 +10.105 -17.533 +13.514 -10.210 +11.210 -15.471
05=CSI 05 +24.118 -25.138 062.572 01.621 0000 0 +24.981 -22.482 +23.255 -27.794 +24.282 -23.319 +24.167 -27.371
06=CSI 10 +11.488 -56.593 031.117 03.207 0000 0 +12.649 -50.315 +10.327 -62.871 +11.490 -51.779 +11.582 -61.338
07=AX_ 02 -22.299 +54.514 142.224 +0.000 0000 0 -21.956 +55.273 -22.641 +53.755 -22.299 +54.773 -22.299 +54.255
08=HS_ 02 -20.650 -70.462 017.248 +0.000 0000 0 -18.812 -68.785 -21.318 -72.138 -20.650 -69.285 -20.650 -71.638
20220424.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 →

2022/20220424_oot · OOT · 4 frames · 85.7 MB · 10:40:47–11:00:47 UT

10:40:47 UT · 40 ms 11:00:47 UT · 40 ms 10:58:09 UT · 60 ms · over-exposed 10:43:41 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.