Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 29 July 2023

‹ 28.07.2023 2023 30.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

29.07.2023 photosphere drawing

High-resolution scan (3230 px)

Time
05:25 UT
Observer
Korhan YELKENCİ
g
11
f
64
R
174
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 1Group 1 · HS_ – 1 Group 2 · DAI – 18Group 2 · DAI – 18 Group 3 · CAI – 6Group 3 · CAI – 6 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · HA_ – 2Group 5 · HA_ – 2 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · DAI – 27Group 7 · DAI – 27 Group 8 · HA_ – 3Group 8 · HA_ – 3 Group 9 · AX_ – 2Group 9 · AX_ – 2 Group 10 · HS_ – 2Group 10 · HS_ – 2 Group 11 · AX_ – 1Group 11 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=29.07.2023
Saat=05:25
Gözlemci=Korhan YELKENCİ
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=9.56
Enlemaçısı=5.53
Boylamaçısı=122.78
Boylamfark=4
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19777
AyRasatNo=28
RasatÖnceki=28.07.2023
RasatSonraki=30.07.2023

[Leke Grupları]
Grupsayısı=11:4:7
LekeSayısı=64:26:38
RölatifSayı=174:66:108
01=HS_ 01 +14.333 +50.979 173.759 +0.000 0000 0 +15.490 +52.420 +13.176 +49.538 +14.333 +51.920 +14.333 +50.380
02=DAI 18 +11.784 -32.481 090.299 22.753 0000 0 +14.960 -27.312 +09.473 -37.649 +13.721 -27.735 +09.673 -37.449
03=CAI 06 +19.580 -53.935 068.845 47.735 0000 0 +21.998 -51.714 +17.163 -56.156 +21.798 -51.914 +17.363 -55.956
04=HS_ 01 +23.471 -85.820 036.960 +0.000 0000 0 +24.296 -81.810 +22.646 -89.829 +23.471 -82.311 +23.471 -89.329
05=HA_ 02 -08.432 +75.857 198.637 +0.000 0000 0 -06.934 +78.357 -09.931 +73.358 -08.432 +77.856 -08.432 +73.858
06=AX_ 01 -15.218 +52.630 175.410 -1.000 0000 0 -15.218 +52.630 -15.218 +52.630
07=DAI 27 -09.538 +00.190 122.970 25.250 0000 0 -07.209 +04.978 -11.866 -04.597 -07.409 +04.778 -11.666 -04.397
08=HA_ 03 -22.599 -44.441 078.339 +0.000 0000 0 -21.455 -43.340 -23.744 -45.849 -22.599 -43.687 -22.599 -45.196
09=AX_ 02 -23.550 -51.405 071.375 +0.000 0000 0 -22.467 -50.247 -23.644 -52.563 -23.550 -50.747 -23.550 -52.630
10=HS_ 02 -08.865 -59.348 063.432 +0.000 0000 0 -07.850 -58.910 -09.880 -60.604 -08.865 -59.100 -08.865 -59.695
11=AX_ 01 -17.287 -68.141 054.639 -1.000 0000 0 -17.287 -68.141 -17.287 -68.141
20230729.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 →

2023/20230729_ky · KY · 28 frames · 599.9 MB · 05:40:23–05:55:46 UT

05:40:53 UT · 40 ms · over-exposed 05:41:23 UT · 30 ms 05:50:17 UT · 30 ms 05:53:47 UT · 30 ms 05:44:23 UT · 40 ms · over-exposed 05:44:53 UT · 30 ms 05:49:47 UT · 40 ms · over-exposed 05:53:16 UT · 40 ms · over-exposed 05:40:23 UT · 60 ms · over-exposed 05:43:53 UT · 60 ms · over-exposed 05:49:16 UT · 60 ms · over-exposed 05:52:46 UT · 60 ms · over-exposed 05:55:46 UT 05:50:47 UT · 60 ms 05:51:17 UT · 40 ms 05:51:47 UT · 20 ms 05:52:17 UT 05:45:23 UT · 60 ms 05:45:53 UT · 40 ms 05:46:23 UT · 20 ms 05:46:53 UT 05:41:53 UT · 60 ms 05:42:23 UT · 40 ms 05:42:53 UT · 20 ms 05:43:23 UT 05:54:17 UT · 60 ms 05:54:46 UT · 40 ms 05:55:16 UT · 20 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.