Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 22 May 2023

‹ 21.05.2023 2023 23.05.2023 ›

Photosphere sunspot drawing and RDS evaluation

22.05.2023 photosphere drawing

High-resolution scan (3229 px)

Time
08:10 UT
Observer
Hikmet ÇAKMAK
g
7
f
84
R
154
Seeing
4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ?__ – 2Group 1 · ?__ – 2 Group 2 · BXI – 6Group 2 · BXI – 6 Group 3 · FAC – 55Group 3 · FAC – 55 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · HK_ – 8Group 5 · HK_ – 8 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · BXI – 11Group 7 · BXI – 11
RDS data file (.gzd) 
[Gözlem]
Tarih=22.05.2023
Saat=08:10
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Korhan YELKENCİ
Durumaçısı=-18.87
Enlemaçısı=-1.88
Boylamaçısı=301.17
Boylamfark=2
GKalite=4
GDurum=G.T
Kuzeyaçısı=-0.4
Sırano=19715
AyRasatNo=14
RasatÖnceki=21.05.2023
RasatSonraki=23.05.2023

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=84:64:20
RölatifSayı=154:104:50
01=?__ 02 +12.287 +82.749 023.919 +0.000 0000 0 +13.668 +84.440 +10.905 +81.590 +12.287 +83.674 +12.287 +81.824
02=BXI 06 +12.196 +70.524 011.694 25.743 0000 0 +13.737 +73.464 +10.656 +67.584 +10.911 +72.212 +12.606 +68.693
03=FAC 55 +17.509 -29.684 271.486 18.692 0000 0 +21.841 -21.257 +13.177 -38.110 +14.913 -22.910 +19.715 -36.468
04=HS_ 01 +21.864 -46.546 254.624 +0.000 0000 0 +23.520 -45.347 +20.676 -47.746 +21.864 -45.847 +21.864 -47.246
05=HK_ 08 -19.850 -19.416 281.754 +0.000 0000 0 -16.103 -15.911 -22.680 -22.920 -19.850 -16.412 -19.850 -22.420
06=AX_ 01 -16.627 -27.276 273.894 -1.000 0000 0 -16.627 -27.276 -16.627 -27.276
07=BXI 11 -24.570 -39.220 262.148 06.950 0000 0 -21.462 -35.345 -26.652 -42.699 -24.407 -36.189 -23.844 -41.477
20230522.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 →

2023/20230522_hc · HC · 11 frames · 235.7 MB · 08:14:37–09:17:24 UT

09:10:10 UT · 40 ms 09:16:03 UT · 40 ms 08:19:32 UT · 30 ms 08:24:35 UT · 40 ms 09:05:51 UT · 40 ms 09:17:24 UT · 70 ms · over-exposed 08:14:37 UT · 70 ms · over-exposed 09:04:54 UT · 70 ms · over-exposed 08:26:35 UT · 70 ms · over-exposed 08:16:55 UT · 80 ms · over-exposed 08:25:42 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.