Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 21 July 2022

‹ 20.07.2022 2022 22.07.2022 ›

Photosphere sunspot drawing and RDS evaluation

21.07.2022 photosphere drawing

High-resolution scan (3225 px)

Time
12:15 UT
Observer
Ö.ÖNALTAŞ=B.T.
g
8
f
53
R
133
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CSI – 6Group 1 · CSI – 6 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · CSI – 12Group 3 · CSI – 12 Group 4 · BXI – 15Group 4 · BXI – 15 Group 5 · CSI – 8Group 5 · CSI – 8 Group 6 · CSO – 5Group 6 · CSO – 5 Group 7 · AX_ – 4Group 7 · AX_ – 4 Group 8 · HS_ – 1Group 8 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=21.07.2022
Saat=12:15
Gözlemci=Ö.ÖNALTAŞ=B.T.
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=6.43
Enlemaçısı=4.91
Boylamaçısı=2.39
Boylamfark=0
GKalite=4
GDurum=
Kuzeyaçısı=-0.1
Sırano=19497
AyRasatNo=20
RasatÖnceki=20.07.2022
RasatSonraki=22.07.2022

[Leke Grupları]
Grupsayısı=8:5:3
LekeSayısı=53:43:10
RölatifSayı=133:93:40
01=CSI 06 +17.325 +55.167 057.557 +0.000 0000 0 +18.615 +58.512 +16.350 +51.822 +17.325 +58.312 +17.325 +52.220
02=AX_ 02 +14.948 +19.726 022.116 +0.000 0000 0 +15.607 +20.643 +14.288 +18.810 +14.948 +20.142 +14.948 +19.309
03=CSI 12 +14.701 +09.567 011.957 22.340 0000 0 +18.130 +14.219 +11.388 +04.914 +13.120 +13.660 +16.192 +05.445
04=BXI 15 +12.394 -04.893 357.497 13.238 0000 0 +13.839 -01.152 +10.949 -08.635 +11.607 -02.347 +12.849 -07.633
05=CSI 08 +09.508 -24.423 337.967 06.562 0000 0 +10.835 -19.686 +08.180 -29.159 +09.570 -20.919 +09.856 -27.884
06=CSO 05 -06.994 +06.114 008.504 02.827 0000 0 -05.647 +08.770 -08.341 +03.458 -06.802 +07.559 -06.994 +03.658
07=AX_ 04 -17.934 -22.627 339.763 +0.000 0000 0 -16.706 -21.855 -19.163 -23.399 -17.934 -22.355 -17.934 -22.899
08=HS_ 01 -23.970 -55.485 306.905 +0.000 0000 0 -21.933 -54.221 -24.261 -56.748 -23.970 -54.722 -23.970 -56.249
20220721.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 →

2022/20220721_oot · OOT · 2 frames · 42.9 MB · 12:26:49–12:28:53 UT

12:28:53 UT · 30 ms 12:26:49 UT · 60 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.