Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 21 September 2022

‹ 20.09.2022 2022 23.09.2022 ›

Photosphere sunspot drawing and RDS evaluation

21.09.2022 photosphere drawing

High-resolution scan (3231 px)

Time
08:00 UT
Observer
Özgecan ÖNALTAŞ
g
5
f
45
R
95
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DAC – 13Group 1 · DAC – 13 Group 2 · AX_ – 3Group 2 · AX_ – 3 Group 3 · AX_ – 2Group 3 · AX_ – 2 Group 4 · DAC – 22Group 4 · DAC – 22 Group 5 · CSO – 5Group 5 · CSO – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=21.09.2022
Saat=08:00
Gözlemci=Özgecan ÖNALTAŞ
KontrolEden=Olcay PLEVNE
Durumaçısı=24.98
Enlemaçısı=7.08
Boylamaçısı=265.39
Boylamfark=2
GKalite=4
GDurum=
Kuzeyaçısı=0.0
Sırano=19557
AyRasatNo=20
RasatÖnceki=20.09.2022
RasatSonraki=23.09.2022

[Leke Grupları]
Grupsayısı=5:0:5
LekeSayısı=45:0:45
RölatifSayı=95:0:95
01=DAC 13 -25.532 +28.140 293.530 09.227 0000 0 -23.511 +33.914 -27.554 +22.366 -26.281 +31.943 -25.490 +24.337
02=AX_ 03 -11.899 -27.685 237.705 +0.000 0000 0 -11.470 -26.489 -12.751 -28.881 +00.000 +00.000 +00.000 +00.000
03=AX_ 02 -10.372 -45.563 219.827 -1.000 0000 0 -10.372 -45.563 -10.372 -45.563
04=DAC 22 -15.820 -57.217 208.173 22.810 0000 0 -12.332 -52.392 -17.832 -62.420 -14.410 -54.847 -16.280 -60.181
05=CSO 05 -23.240 -70.976 194.414 37.714 0000 0 -21.140 -68.657 -24.909 -73.295 -22.344 -70.920 -24.199 -72.492
20220921.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 →

2022/20220921_oot · OOT · 4 frames · 85.7 MB · 08:16:51–09:09:33 UT

09:08:24 UT · 30 ms 08:18:28 UT · 30 ms 09:09:33 UT · 60 ms · over-exposed 08:16:51 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.