Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 2 August 2023

‹ 01.08.2023 2023 03.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

02.08.2023 photosphere drawing

High-resolution scan (3222 px)

Time
10:00 UT
Observer
Olcay PLEVNE
g
8
f
47
R
127
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CSI – 8Group 1 · CSI – 8 Group 2 · HS_ – 3Group 2 · HS_ – 3 Group 3 · CSI – 13Group 3 · CSI – 13 Group 4 · HS_ – 3Group 4 · HS_ – 3 Group 5 · EKC – 13Group 5 · EKC – 13 Group 6 · BXI – 3Group 6 · BXI – 3 Group 7 · BXI – 2Group 7 · BXI – 2 Group 8 · BXI – 2Group 8 · BXI – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=2.08.2023
Saat=10:00
Gözlemci=Olcay PLEVNE
KontrolEden=Burçin TANIK
Durumaçısı=11.24
Enlemaçısı=5.84
Boylamaçısı=67.35
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19781
AyRasatNo=2
RasatÖnceki=01.08.2023
RasatSonraki=03.08.2023

[Leke Grupları]
Grupsayısı=8:4:4
LekeSayısı=47:27:20
RölatifSayı=127:67:60
01=CSI 08 +12.890 +23.417 090.767 +0.000 0000 0 +14.985 +28.358 +09.192 +18.476 +12.890 +28.158 +12.890 +18.676
02=HS_ 03 +21.493 +00.191 067.541 +0.000 0000 0 +22.909 +01.781 +20.770 -01.399 +21.493 +01.281 +21.493 -00.899
03=CSI 13 +10.288 -33.116 034.234 +0.000 0000 0 +11.576 -26.832 +09.000 -39.400 +10.288 -27.320 +10.288 -39.200
04=HS_ 03 +24.158 -35.782 031.568 +0.000 0000 0 +26.384 -33.174 +21.932 -38.389 +24.158 -33.674 +24.158 -37.890
05=EKC 13 -10.182 +55.746 123.960 +0.000 0000 0 -07.749 +62.109 -12.615 +49.384 -10.182 +61.909 -10.182 +49.584
06=BXI 03 -22.453 +06.256 073.606 +0.000 0000 0 -21.259 +08.836 -23.647 +03.676 -22.453 +08.636 -22.453 +03.876
07=BXI 02 -08.657 -05.262 062.880 +0.000 0000 0 -08.250 -03.595 -09.288 -06.929 -08.657 -04.950 -08.657 -06.429
08=BXI 02 -18.616 -16.447 050.903 +0.000 0000 0 -17.195 -15.500 -20.370 -17.843 +00.000 +00.000 +00.000 +00.000
20230802.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 →

2023/20230802_op · OP · 5 frames · 107.1 MB · 10:19:54–10:26:50 UT

10:19:54 UT · 30 ms 10:22:29 UT · 40 ms 10:23:55 UT · 40 ms 10:26:50 UT · 50 ms · over-exposed 10:25:55 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.