Images 27.08.2023 · Istanbul University Observatory Solar Observations

Solar Images Sunday, 27 August 2023

‹ 26.08.2023 2023 28.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3223 px)

Time: 11:30 UT
Observer: Olcay PLEVNE
g: 5
f: 24
R: 74
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 1

Group 2 · HS_ – 1

Group 3 · HK_ – 15

Group 4 · HA_ – 6

Group 5 · AX_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=27.08.2023
Saat=11:30
Gözlemci=Olcay PLEVNE
KontrolEden=Ergün EGE
Durumaçısı=19.75
Enlemaçısı=7.09
Boylamaçısı=96.05
Boylamfark=0
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19804
AyRasatNo=25
RasatÖnceki=26.08.2023
RasatSonraki=28.08.2023

[Leke Grupları]
Grupsayısı=5:3:2
LekeSayısı=24:17:7
RölatifSayı=74:47:27
01=BXI 01 +13.540 +72.393 168.443 +0.000 0000 0 +14.890 +74.245 +12.992 +70.540 +13.540 +73.745 +13.540 +71.400
02=HS_ 01 +30.684 +35.722 131.772 +0.000 0000 0 +31.495 +37.180 +29.873 +34.425 +30.684 +36.599 +30.684 +34.845
03=HK_ 15 +12.228 +02.258 098.308 +0.000 0000 0 +16.450 +05.349 +08.600 -00.833 +12.228 +04.849 +12.228 -00.333
04=HA_ 06 -08.252 -17.862 078.188 +0.000 0000 0 -06.155 -15.222 -10.350 -20.503 -08.252 -15.721 -08.252 -20.200
05=AX_ 01 -17.929 -50.241 045.809 +0.000 0000 0 -17.680 -48.852 -18.790 -51.631 +00.000 +00.000 +00.000 +00.000

20230827.gzd

Chromosphere (H-α) FITS frames

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 →

2023/20230827_op · OP · 4 frames · 85.7 MB · 11:42:22–11:46:39 UT

11:44:04 UT · 30 ms

11:42:22 UT · 30 ms

11:45:33 UT · 60 ms · over-exposed

11:46:39 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.