Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 16 September 2023

‹ 15.09.2023 2023 17.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

16.09.2023 photosphere drawing

High-resolution scan (3241 px)

Time
09:15 UT
Observer
Burçin TANIK
g
7
f
26
R
96
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2Group 1 · AX_ – 2 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · DSI – 14Group 4 · DSI – 14 Group 5 · AX_ – 4Group 5 · AX_ – 4 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · AX_ – 3Group 7 · AX_ – 3
RDS data file (.gzd) 
[Gözlem]
Tarih=16.09.2023
Saat=09:15
Gözlemci=Burçin TANIK
KontrolEden=Başar COŞKUNOĞLU
Durumaçısı=24.2
Enlemaçısı=7.19
Boylamaçısı=193.15
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.8
Sırano=19823
AyRasatNo=15
RasatÖnceki=15.09.2023
RasatSonraki=17.09.2023

[Leke Grupları]
Grupsayısı=7:6:1
LekeSayısı=26:23:3
RölatifSayı=96:83:13
01=AX_ 02 +16.132 +76.615 269.765 +0.000 0000 0 +17.630 +77.216 +15.200 +76.140 +16.132 +76.653 +16.132 +76.577
02=AX_ 01 +18.619 +62.384 255.534 -1.000 0000 0 +18.619 +62.384 +18.619 +62.384
03=AX_ 01 +22.684 +50.351 243.501 -1.000 0000 0 +22.684 +50.351 +22.684 +50.351
04=DSI 14 +11.413 +12.243 205.393 +0.000 0000 0 +13.600 +17.370 +09.765 +07.448 +11.413 +16.837 +11.413 +07.648
05=AX_ 04 +09.192 +03.701 196.851 +0.000 0000 0 +10.292 +04.519 +08.910 +02.883 +00.000 +00.000 +00.000 +00.000
06=HS_ 01 +28.850 -20.400 173.146 +0.000 0000 0 +29.891 -18.810 +27.808 -21.199 +28.850 -19.705 +28.850 -21.940
07=AX_ 03 -17.965 +63.418 256.568 +0.000 0000 0 -17.238 +64.489 -18.693 +62.348 -17.965 +63.988 -17.965 +62.847
20230916.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 →

2023/20230916_bto · BTO · 6 frames · 128.6 MB · 09:23:50–09:29:49 UT

09:27:48 UT · 30 ms 09:29:49 UT · 40 ms 09:25:41 UT · 30 ms 09:23:50 UT · 60 ms · over-exposed 09:26:38 UT · 70 ms · over-exposed 09:28:41 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.