Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 28 January 2022

‹ 26.01.2022 2022 29.01.2022 ›

Photosphere sunspot drawing and RDS evaluation

28.01.2022 photosphere drawing

High-resolution scan (3226 px)

Time
08:39 UT
Observer
Başar COŞKUNOĞLU
g
4
f
41
R
81
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 3Group 1 · AX_ – 3 Group 2 · DSC – 30Group 2 · DSC – 30 Group 3 · HA_ – 2Group 3 · HA_ – 2 Group 4 · BXI – 6Group 4 · BXI – 6
RDS data file (.gzd) 
[Gözlem]
Tarih=28.01.2022
Saat=08:39
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Özgecan ÖNALTAŞ
Durumaçısı=-10.62
Enlemaçısı=-5.73
Boylamaçısı=142.28
Boylamfark=2
GKalite=3
GDurum=
Kuzeyaçısı=-0.3
Sırano=19363
AyRasatNo=13
RasatÖnceki=26.01.2022
RasatSonraki=29.01.2022

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=41:33:8
RölatifSayı=81:53:28
01=AX_ 03 +27.520 +33.365 175.645 +0.000 0000 0 +27.775 +33.813 +26.329 +32.917 +27.520 +33.313 +27.520 +33.417
02=DSC 30 +16.116 -31.312 110.968 +0.000 0000 0 +18.670 -26.397 +13.562 -36.227 +16.116 -26.597 +16.116 -36.270
03=HA_ 02 -25.100 +25.340 167.314 +0.000 0000 0 -24.360 +26.570 -25.984 +24.100 -25.100 +26.750 -25.100 +24.605
04=BXI 06 -20.305 +14.377 156.657 26.711 0000 0 -18.568 +17.325 -22.420 +11.428 -19.900 +16.412 -21.350 +11.752
20220128.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 →

2022/20220128_bc · BC · 6 frames · 128.6 MB · 08:27:46–08:31:32 UT

08:28:43 UT · 30 ms 08:29:30 UT · 30 ms 08:27:46 UT · 30 ms 08:31:32 UT · 60 ms · over-exposed 08:30:56 UT · 60 ms · over-exposed 08:30:20 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.