Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 13 July 2023

‹ 12.07.2023 2023 14.07.2023 ›

Photosphere sunspot drawing and RDS evaluation

13.07.2023 photosphere drawing

High-resolution scan (3231 px)

Time
06:35 UT
Observer
Burçin TANIK
g
7
f
84
R
154
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DSI – 6Group 1 · DSI – 6 Group 2 · EKI – 21Group 2 · EKI – 21 Group 3 · FHC – 17Group 3 · FHC – 17 Group 4 · AX_ – 3Group 4 · AX_ – 3 Group 5 · DKI – 25Group 5 · DKI – 25 Group 6 · CRI – 10Group 6 · CRI – 10 Group 7 · HS_ – 2Group 7 · HS_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=13.07.2023
Saat=06:35
Gözlemci=Burçin TANIK
KontrolEden=Korhan YELKENCİ
Durumaçısı=2.71
Enlemaçısı=4.1
Boylamaçısı=333.82
Boylamfark=3
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.7
Sırano=19761
AyRasatNo=12
RasatÖnceki=12.07.2023
RasatSonraki=14.07.2023

[Leke Grupları]
Grupsayısı=7:3:4
LekeSayısı=84:44:40
RölatifSayı=154:74:80
01=DSI 06 +25.173 +65.515 039.335 +0.000 0000 0 +26.295 +68.413 +24.500 +62.616 +25.173 +68.213 +25.173 +62.816
02=EKI 21 +10.758 +44.995 018.815 13.601 0000 0 +12.937 +50.986 +08.579 +39.400 +09.440 +49.493 +11.584 +40.591
03=FHC 17 +22.611 -64.242 269.578 13.951 0000 0 +26.720 -56.264 +19.151 -72.219 +21.364 -58.490 +24.520 -68.944
04=AX_ 03 -08.447 +33.120 006.940 +0.000 0000 0 -07.228 +34.353 -09.667 +31.887 +00.000 +00.000 +00.000 +00.000
05=DKI 25 -21.833 +08.925 342.745 36.307 0000 0 -18.220 +12.953 -25.645 +04.898 -20.172 +11.843 -24.556 +05.855
06=CRI 10 -15.278 -32.201 301.619 +0.000 0000 0 -14.374 -27.630 -16.182 -36.772 -15.278 -27.830 -15.278 -36.572
07=HS_ 02 -15.244 -43.884 289.936 +0.000 0000 0 -14.384 -42.783 -16.104 -44.984 -15.244 -43.284 -15.244 -44.484
20230713.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 →

2023/20230713_bto · BTO · 6 frames · 128.6 MB · 06:40:39–06:45:32 UT

06:43:34 UT · 30 ms 06:45:32 UT · 40 ms 06:42:39 UT · 40 ms 06:40:39 UT · 60 ms · over-exposed 06:44:30 UT · 70 ms · over-exposed 06:41:40 UT · 80 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.