Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 8 September 2021

‹ 07.09.2021 2021 11.09.2021 ›

Photosphere sunspot drawing and RDS evaluation

08.09.2021 photosphere drawing

High-resolution scan (3228 px)

Time
10:17 UT
Observer
Başar COŞKUNOĞLU
g
5
f
48
R
98
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 2Group 1 · HS_ – 2 Group 2 · HS_ – 1Group 2 · HS_ – 1 Group 3 · CAI – 16Group 3 · CAI – 16 Group 4 · DSI – 26Group 4 · DSI – 26 Group 5 · BXO – 3Group 5 · BXO – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=8.09.2021
Saat=10:17
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=22.8
Enlemaçısı=7.25
Boylamaçısı=213.32
Boylamfark=1
GKalite=3
GDurum=G.T , B.A
Kuzeyaçısı=-0.5
Sırano=19271
AyRasatNo=8
RasatÖnceki=07.09.2021
RasatSonraki=11.09.2021

[Leke Grupları]
Grupsayısı=5:1:4
LekeSayısı=48:2:46
RölatifSayı=98:12:86
01=HS_ 02 +25.610 +41.827 255.147 +0.000 0000 0 +25.884 +43.220 +24.237 +40.632 +25.610 +42.621 +25.610 +41.330
02=HS_ 01 -15.561 +48.733 262.530 +0.000 0000 0 -14.663 +49.531 -16.460 +47.936 -15.561 +49.310 -15.561 +48.436
03=CAI 16 -19.940 +01.660 214.386 +0.000 0000 0 -17.590 +04.678 -21.130 -02.545 -19.940 +04.478 -19.940 -02.345
04=DSI 26 -16.721 -15.644 197.676 +0.000 0000 0 -15.150 -12.296 -18.292 -18.992 -16.721 -12.496 -16.721 -18.792
05=BXO 03 -34.145 -17.572 195.748 +0.000 0000 0 -33.334 -15.599 -34.956 -19.544 -34.145 -15.799 -34.145 -19.344
20210908.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 →

2021/20210908_bc · BC · 7 frames · 150.0 MB · 10:20:52–10:28:17 UT

10:20:52 UT · 60 ms 10:24:54 UT · 60 ms 10:23:03 UT · 60 ms 10:27:35 UT · 40 ms 10:28:17 UT · 40 ms 10:26:55 UT · 40 ms 10:22:10 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.