Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 28 September 2022

‹ 27.09.2022 2022 29.09.2022 ›

Photosphere sunspot drawing and RDS evaluation

28.09.2022 photosphere drawing

High-resolution scan (3229 px)

Time
09:44 UT
Observer
Özgecan ÖNALTAŞ
g
4
f
50
R
90
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DSI – 9Group 1 · DSI – 9 Group 2 · HS_ – 1Group 2 · HS_ – 1 Group 3 · DSI – 15Group 3 · DSI – 15 Group 4 · ESC – 25Group 4 · ESC – 25
RDS data file (.gzd) 
[Gözlem]
Tarih=28.09.2022
Saat=09:44
Gözlemci=Özgecan ÖNALTAŞ
KontrolEden=
Durumaçısı=25.74
Enlemaçısı=6.85
Boylamaçısı=172.05
Boylamfark=1
GKalite=3
GDurum=B.A
Kuzeyaçısı=0.0
Sırano=19563
AyRasatNo=26
RasatÖnceki=27.09.2022
RasatSonraki=29.09.2022

[Leke Grupları]
Grupsayısı=4:2:2
LekeSayısı=50:10:40
RölatifSayı=90:30:60
01=DSI 09 +17.800 -15.226 156.824 02.205 0000 0 +19.270 -09.187 +15.133 -21.265 +17.319 -11.350 +17.684 -20.577
02=HS_ 01 +28.916 -65.472 106.578 -1.000 0000 0 +29.912 -63.918 +27.919 -67.270
03=DSI 15 -16.897 +33.507 205.557 28.994 0000 0 -14.529 +36.951 -19.265 +30.620 -15.567 +35.673 -18.136 +31.280
04=ESC 25 -23.489 +14.557 186.607 01.556 0000 0 -22.254 +21.694 -24.723 +07.420 -23.832 +20.341 -23.489 +07.620
20220928.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 →

2022/20220928_oot · OOT · 5 frames · 107.1 MB · 09:53:38–10:01:58 UT

09:59:44 UT · 30 ms 10:01:06 UT · 30 ms 10:01:58 UT · 60 ms · over-exposed 09:58:48 UT · 60 ms · over-exposed 09:53:38 UT

Coronado H-α animations from frame sequences

No Coronado observation for this day.