Images 26.04.2021 · Istanbul University Observatory Solar Observations

Solar Images Monday, 26 April 2021

‹ 22.04.2021 2021 27.04.2021 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3232 px)

Time: 08:15 UT
Observer: Hikmet ÇAKMAK
g: 4
f: 25
R: 65
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1

Group 2 · CAI – 7

Group 3 · DAI – 16

Group 4 · HS_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=26.04.2021
Saat=08:15
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Burçin TANIK
Durumaçısı=-24.84
Enlemaçısı=-4.63
Boylamaçısı=199.98
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=0.0
Sırano=19168
AyRasatNo=14
RasatÖnceki=22.04.2021
RasatSonraki=27.04.2021

[Leke Grupları]
Grupsayısı=4:1:3
LekeSayısı=25:1:24
RölatifSayı=65:11:54
01=AX_ 01 +24.434 +46.431 246.411 -1.000 0000 0 +24.434 +46.431 +24.434 +46.431
02=CAI 07 -21.678 +18.390 218.190 10.524 0000 0 -20.727 +20.959 -22.628 +15.120 -21.408 +20.411 -22.262 +15.811
03=DAI 16 -21.754 +08.677 208.657 19.536 0000 0 -19.694 +12.997 -23.813 +04.357 -20.465 +12.100 -23.300 +04.922
04=HS_ 01 -15.839 +02.731 202.711 +0.000 0000 0 -15.103 +03.474 -16.575 +01.988 -15.839 +02.974 -15.839 +02.488

20210426.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 →

2021/20210426_hc · HC · 13 frames · 278.6 MB · 08:20:14–08:53:39 UT

08:53:39 UT · 30 ms