Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 24 August 2023

‹ 23.08.2023 2023 25.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

24.08.2023 photosphere drawing

High-resolution scan (3230 px)

Time
09:05 UT
Observer
Hikmet ÇAKMAK
g
6
f
24
R
84
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HA_ – 3Group 1 · HA_ – 3 Group 2 · HA_ – 1Group 2 · HA_ – 1 Group 3 · HA_ – 2Group 3 · HA_ – 2 Group 4 · HK_ – 12Group 4 · HK_ – 12 Group 5 · BXO – 2Group 5 · BXO – 2 Group 6 · HA_ – 4Group 6 · HA_ – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=24.08.2023
Saat=09:05
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=18.86
Enlemaçısı=7
Boylamaçısı=137.02
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.3
Sırano=19801
AyRasatNo=22
RasatÖnceki=23.08.2023
RasatSonraki=25.08.2023

[Leke Grupları]
Grupsayısı=6:5:1
LekeSayısı=24:20:4
RölatifSayı=84:70:14
01=HA_ 03 +10.529 +51.372 188.392 +0.000 0000 0 +11.687 +52.949 +09.371 +49.795 +10.529 +52.449 +10.529 +50.295
02=HA_ 01 +14.302 +32.776 169.796 +0.000 0000 0 +14.849 +33.576 +13.755 +31.976 +14.302 +33.760 +14.302 +32.476
03=HA_ 02 +31.142 -03.618 133.402 +0.000 0000 0 +31.781 -02.555 +30.502 -04.682 +31.142 -03.550 +31.142 -04.181
04=HK_ 12 +11.353 -39.856 097.164 +0.000 0000 0 +15.197 -36.616 +07.509 -43.970 +11.353 -36.679 +11.353 -43.330
05=BXO 02 +15.309 -48.750 088.945 +0.000 0000 0 +15.795 -46.690 +14.823 -50.820 +15.309 -47.185 +15.309 -50.315
06=HA_ 04 -09.848 -58.127 078.893 +0.000 0000 0 -07.863 -55.827 -11.833 -60.428 -09.848 -56.326 -09.848 -59.927
20230824.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 →

2023/20230824_hc · HC · 8 frames · 171.4 MB · 09:06:51–10:01:00 UT

10:00:06 UT · 40 ms 09:09:04 UT · 60 ms 09:06:51 UT · 30 ms 09:27:43 UT · 40 ms 09:20:45 UT · 30 ms 10:01:00 UT · 80 ms · over-exposed 09:19:08 UT · 80 ms · over-exposed 09:11:52 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.