Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 12 November 2021

‹ 11.11.2021 2021 13.11.2021 ›

Photosphere sunspot drawing and RDS evaluation

12.11.2021 photosphere drawing

High-resolution scan (3226 px)

Time
08:15 UT
Observer
Başar COŞKUNOĞLU
g
4
f
7
R
47
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 2Group 1 · HS_ – 2 Group 2 · BXI – 2Group 2 · BXI – 2 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · HS_ – 2Group 4 · HS_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=12.11.2021
Saat=08:15
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Korhan YELKENCİ
Durumaçısı=22.05
Enlemaçısı=3.16
Boylamaçısı=76.89
Boylamfark=2
GKalite=3
GDurum=
Kuzeyaçısı=-0.4
Sırano=19321
AyRasatNo=9
RasatÖnceki=11.11.2021
RasatSonraki=14.11.2021

[Leke Grupları]
Grupsayısı=4:3:1
LekeSayısı=7:5:2
RölatifSayı=47:35:12
01=HS_ 02 +18.540 +78.631 155.521 +0.000 0000 0 +19.440 +80.207 +17.650 +77.550 +18.540 +79.459 +18.540 +77.802
02=BXI 02 +24.327 -06.993 069.897 +0.000 0000 0 +24.618 -04.613 +24.360 -09.373 +24.327 -05.113 +24.327 -08.873
03=AX_ 01 +26.990 -38.673 038.217 -1.000 0000 0 +26.990 -38.673 +26.990 -38.673
04=HS_ 02 -24.947 +12.461 089.351 +0.000 0000 0 -23.806 +13.544 -26.890 +11.377 -24.947 +13.450 -24.947 +11.878
20211112.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 →

2021/20211112_bc · BC · 6 frames · 128.6 MB · 08:42:09–08:48:25 UT

08:45:12 UT · 40 ms 08:46:16 UT · 40 ms 08:42:09 UT · 40 ms · over-exposed 08:47:45 UT · 60 ms · over-exposed 08:48:25 UT · 60 ms · over-exposed 08:47:04 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.