Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 17 March 2024

‹ 16.03.2024 2024 18.03.2024 ›

Photosphere sunspot drawing and RDS evaluation

17.03.2024 photosphere drawing

High-resolution scan (3220 px)

Time
09:10 UT
Observer
Olcay PLEVNE
g
6
f
21
R
81
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 1Group 1 · BXI – 1 Group 2 · BXI – 8Group 2 · BXI – 8 Group 3 · HS_ – 1Group 3 · HS_ – 1 Group 4 · HS_ – 1Group 4 · HS_ – 1 Group 5 · CSI – 8Group 5 · CSI – 8 Group 6 · BXI – 2Group 6 · BXI – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=17.03.2024
Saat=09:10
Gözlemci=Olcay PLEVNE
KontrolEden=Korhan YELKENCİ
Durumaçısı=-24.83
Enlemaçısı=-7.11
Boylamaçısı=301.48
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19935
AyRasatNo=9
RasatÖnceki=16.03.2024
RasatSonraki=18.03.2024

[Leke Grupları]
Grupsayısı=6:4:2
LekeSayısı=21:11:10
RölatifSayı=81:51:30
01=BXI 01 +21.223 +72.261 013.741 +0.000 0000 0 +21.962 +73.809 +20.484 +70.712 +21.223 +73.310 +21.223 +71.213
02=BXI 08 +10.235 +02.521 304.100 +0.000 0000 0 +11.733 +04.922 +08.737 +00.119 +10.235 +04.722 +10.235 +00.319
03=HS_ 01 +27.640 -29.372 272.108 +0.000 0000 0 +28.680 -28.651 +26.600 -30.930 +27.640 -28.733 +27.640 -30.110
04=HS_ 01 +16.170 -72.667 228.813 +0.000 0000 0 +17.281 -70.438 +14.753 -74.895 +16.170 -70.938 +16.170 -74.396
05=CSI 08 -22.997 +21.985 323.465 +0.000 0000 0 -21.726 +25.678 -24.269 +18.293 -22.997 +25.478 -22.997 +18.493
06=BXI 02 -16.790 +17.717 319.197 +0.000 0000 0 -16.690 +18.501 -17.511 +16.934 -16.790 +18.000 -16.790 +17.433
20240317.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 →

2024/20240317_op · OP · 4 frames · 85.7 MB · 09:10:25–09:14:50 UT

09:11:58 UT · 30 ms 09:14:50 UT · 50 ms · over-exposed 09:10:25 UT · 30 ms · over-exposed 09:14:03 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.