Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 4 October 2023

‹ 03.10.2023 2023 05.10.2023 ›

Photosphere sunspot drawing and RDS evaluation

04.10.2023 photosphere drawing

High-resolution scan (3224 px)

Time
07:00 UT
Observer
Olcay PLEVNE
g
7
f
72
R
142
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HS_ – 2Group 1 · HS_ – 2 Group 2 · BXI – 12Group 2 · BXI – 12 Group 3 · DAI – 26Group 3 · DAI – 26 Group 4 · CSI – 6Group 4 · CSI – 6 Group 5 · EAI – 17Group 5 · EAI – 17 Group 6 · BXI – 3Group 6 · BXI – 3 Group 7 · BXI – 6Group 7 · BXI – 6
RDS data file (.gzd) 
[Gözlem]
Tarih=4.10.2023
Saat=07:00
Gözlemci=Olcay PLEVNE
KontrolEden=Burçin TANIK
Durumaçısı=26.11
Enlemaçısı=6.58
Boylamaçısı=316.82
Boylamfark=3
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19838
AyRasatNo=3
RasatÖnceki=03.10.2023
RasatSonraki=05.10.2023

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=72:46:26
RölatifSayı=142:86:56
01=HS_ 02 +14.649 +36.455 353.275 +0.000 0000 0 +15.669 +37.712 +13.629 +35.198 +14.649 +37.212 +14.649 +35.698
02=BXI 12 +11.296 +18.399 335.219 +0.000 0000 0 +12.621 +21.934 +09.970 +14.864 +11.296 +21.734 +11.296 +15.640
03=DAI 26 +11.624 -15.805 301.150 +0.000 0000 0 +14.102 -09.695 +09.147 -21.915 +11.624 -09.895 +11.624 -21.715
04=CSI 06 +17.293 -18.729 298.910 +0.000 0000 0 +19.400 -14.337 +15.582 -23.122 +17.293 -14.537 +17.293 -22.922
05=EAI 17 -18.371 +11.590 328.410 +0.000 0000 0 -16.656 +18.355 -20.870 +04.826 -18.371 +18.155 -18.371 +05.260
06=BXI 03 -30.302 +08.669 325.489 +0.000 0000 0 -29.434 +10.797 -31.170 +06.540 -30.302 +10.597 -30.302 +06.740
07=BXI 06 -10.109 -36.140 280.680 +0.000 0000 0 -08.770 -33.267 -11.447 -39.120 -10.109 -33.467 -10.109 -38.812
20231004.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 →

2023/20231004_op · OP · 4 frames · 85.7 MB · 07:16:10–07:20:43 UT

07:18:16 UT · 30 ms 07:20:06 UT · 60 ms 07:16:10 UT · 30 ms 07:20:43 UT · 60 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.