Images 04.04.2024 · Istanbul University Observatory Solar Observations

Solar Images Thursday, 4 April 2024

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3230 px)

Time: 07:00 UT
Observer: Korhan YELKENCİ
g: 6
f: 14
R: 74
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 3

Group 2 · AX_ – 4

Group 3 · AX_ – 2

Group 4 · AX_ – 2

Group 5 · HS_ – 2

Group 6 · AX_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=4.04.2024
Saat=07:00
Gözlemci=Korhan YELKENCİ
KontrolEden=Ergün EGE
Durumaçısı=-26.24
Enlemaçısı=-6.34
Boylamaçısı=65.28
Boylamfark=3
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.5
Sırano=19950
AyRasatNo=3
RasatÖnceki=03.04.2024
RasatSonraki=05.04.2024

[Leke Grupları]
Grupsayısı=6:6:0
LekeSayısı=14:14:0
RölatifSayı=74:74:0
01=BXO 03 +11.299 +60.507 125.787 23.101 0000 0 +12.252 +62.508 +10.346 +58.506 +12.300 +62.190 +10.546 +58.706
02=AX_ 04 +05.600 +01.630 066.343 +0.000 0000 0 +05.768 +02.288 +04.245 -00.163 +05.600 +02.355 +05.600 +00.905
03=AX_ 02 +08.966 -16.000 049.280 +0.000 0000 0 +09.499 -15.742 +08.434 -16.259 +08.966 -16.242 +08.966 -15.759
04=AX_ 02 +07.932 -42.920 022.360 +0.000 0000 0 +08.314 -42.488 +07.550 -43.353 +07.932 -42.987 +07.932 -42.852
05=HS_ 02 +06.572 -64.713 000.567 +0.000 0000 0 +08.560 -62.841 +05.880 -66.585 +06.572 -63.341 +06.572 -66.850
06=AX_ 01 +24.449 -67.333 357.947 -1.000 0000 0 +24.449 -67.333 +24.449 -67.333

20240404.gzd

Chromosphere (H-α) FITS frames

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 →

2024/20240404_ky · KY · 14 frames · 299.9 MB · 07:21:24–07:27:58 UT

07:22:24 UT · 30 ms