Images 29.04.2021 · Istanbul University Observatory Solar Observations

Solar Images Thursday, 29 April 2021

‹ 28.04.2021 2021 17.05.2021 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3228 px)

Time: 09:20 UT
Observer: Talar YONTAN
g: 3
f: 14
R: 44
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CSI – 8

Group 2 · DAI – 5

Group 3 · HS_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=29.04.2021
Saat=09:20
Gözlemci=Talar YONTAN
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=-24.37
Enlemaçısı=-4.33
Boylamaçısı=159.74
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19171
AyRasatNo=17
RasatÖnceki=28.04.2021
RasatSonraki=17.05.2021

[Leke Grupları]
Grupsayısı=3:0:3
LekeSayısı=14:0:14
RölatifSayı=44:0:44
01=CSI 08 -22.658 +58.609 218.349 18.199 0000 0 -20.849 +63.607 -24.467 +53.612 -21.855 +61.939 -24.800 +55.372
02=DAI 05 -22.647 +47.692 207.432 15.650 0000 0 -20.805 +53.440 -24.489 +42.340 -21.544 +51.546 -23.863 +43.237
03=HS_ 01 -15.962 +42.687 202.427 +0.000 0000 0 -14.974 +43.599 -16.950 +41.775 -15.962 +43.990 -15.962 +42.275

20210429.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 →

2021/20210429_ty · TY · 11 frames · 235.7 MB · 09:30:08–10:03:08 UT

09:30:08 UT · 30 ms