Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 23 April 2022

‹ 21.04.2022 2022 24.04.2022 ›

Photosphere sunspot drawing and RDS evaluation

23.04.2022 photosphere drawing

High-resolution scan (3230 px)

Time
13:00 UT
Observer
Ö.ÖNALTAŞ=B.T.
g
10
f
65
R
165
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CAI – 15Group 1 · CAI – 15 Group 2 · EHC – 34Group 2 · EHC – 34 Group 3 · CSO – 3Group 3 · CSO – 3 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · BXO – 4Group 5 · BXO – 4 Group 6 · HS_ – 3Group 6 · HS_ – 3 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · AX_ – 1Group 8 · AX_ – 1 Group 9 · AX_ – 1Group 9 · AX_ – 1 Group 10 · HS_ – 1Group 10 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=23.04.2022
Saat=13:00
Gözlemci=Ö.ÖNALTAŞ=B.T.
KontrolEden=Özgecan ÖNALTAŞ
Durumaçısı=-25.25
Enlemaçısı=-4.91
Boylamaçısı=99.45
Boylamfark=1
GKalite=4
GDurum=H.S
Kuzeyaçısı=-0.1
Sırano=19414
AyRasatNo=15
RasatÖnceki=21.04.2022
RasatSonraki=24.04.2022

[Leke Grupları]
Grupsayısı=10:8:2
LekeSayısı=65:63:2
RölatifSayı=165:143:22
01=CAI 15 +19.836 +09.210 108.471 64.203 0000 0 +22.324 +13.306 +17.348 +04.735 +18.193 +10.407 +21.762 +08.680
02=EHC 34 +14.553 +03.907 103.357 02.209 0000 0 +17.243 +10.272 +11.862 -02.459 +14.747 +08.280 +14.398 -01.340
03=CSO 03 +14.430 -22.125 077.325 +0.000 0000 0 +15.738 -20.522 +12.348 -23.728 +14.430 -20.722 +14.430 -23.528
04=AX_ 01 +14.590 -26.550 073.395 -1.000 0000 0 +14.590 -26.550 +14.590 -26.550
05=BXO 04 +17.626 -31.212 068.238 +0.000 0000 0 +19.596 -28.381 +15.656 -34.440 +17.626 -28.382 +17.626 -34.420
06=HS_ 03 +24.708 -34.310 065.419 +0.000 0000 0 +25.805 -32.789 +23.610 -35.273 +24.708 -33.568 +24.708 -35.520
07=AX_ 02 +12.966 -65.950 033.500 +0.000 0000 0 +13.937 -64.760 +11.996 -67.141 +00.000 +00.000 +00.000 +00.000
08=AX_ 01 +12.247 -74.836 024.614 -1.000 0000 0 +12.247 -74.836 +12.247 -74.836
09=AX_ 01 -21.929 +39.821 139.271 -1.000 0000 0 -21.929 +39.821 -21.929 +39.821
10=HS_ 01 -19.456 -80.685 018.765 +0.000 0000 0 -18.426 -77.274 -20.486 -84.970 -19.456 -77.337 -19.456 -84.330
20220423.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 →

2022/20220423_oot · OOT · 4 frames · 85.7 MB · 13:15:47–13:35:28 UT

13:17:46 UT · 60 ms 13:35:28 UT · 80 ms 13:34:21 UT · 60 ms 13:15:47 UT · 60 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.