Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 28 June 2023

‹ 27.06.2023 2023 30.06.2023 ›

Photosphere sunspot drawing and RDS evaluation

28.06.2023 photosphere drawing

High-resolution scan (3226 px)

Time
08:00 UT
Observer
Olcay PLEVNE
g
7
f
58
R
128
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 12Group 1 · BXI – 12 Group 2 · AX_ – 1Group 2 · AX_ – 1 Group 3 · BXI – 4Group 3 · BXI – 4 Group 4 · DKC – 36Group 4 · DKC – 36 Group 5 · HS_ – 1Group 5 · HS_ – 1 Group 6 · AX_ – 3Group 6 · AX_ – 3 Group 7 · AX_ – 1Group 7 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=28.06.2023
Saat=08:00
Gözlemci=Olcay PLEVNE
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=-4.04
Enlemaçısı=2.51
Boylamaçısı=171.58
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19748
AyRasatNo=26
RasatÖnceki=27.06.2023
RasatSonraki=30.06.2023

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=58:53:5
RölatifSayı=128:93:35
01=BXI 12 +23.687 +57.931 229.511 +0.000 0000 0 +26.266 +64.780 +21.107 +51.784 +23.687 +63.878 +23.687 +51.984
02=AX_ 01 +08.739 +39.100 210.581 -1.000 0000 0 +08.739 +39.100 +08.739 +39.100
03=BXI 04 +22.900 -03.261 168.319 +0.000 0000 0 +22.812 -01.517 +21.206 -05.600 +22.900 -01.717 +22.900 -04.806
04=DKC 36 +14.538 -08.780 162.800 +0.000 0000 0 +18.628 -02.539 +10.449 -15.220 +14.538 -02.739 +14.538 -14.822
05=HS_ 01 -19.440 +68.465 240.450 +0.000 0000 0 -18.168 +71.373 -19.920 +65.558 -19.440 +70.872 -19.440 +66.570
06=AX_ 03 -15.608 +34.658 206.238 +0.000 0000 0 -14.733 +35.846 -16.484 +33.469 +00.000 +00.000 +00.000 +00.000
07=AX_ 01 -14.533 -59.325 112.255 +0.000 0000 0 -13.735 -58.195 -15.331 -60.455 -14.533 -58.695 -14.533 -59.955
20230628.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 →

2023/20230628_op · OP · 4 frames · 85.7 MB · 07:59:14–08:05:55 UT

07:59:14 UT · 30 ms 08:00:22 UT · 30 ms 08:01:15 UT · 60 ms · over-exposed 08:05:55 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.