Images 23.10.2021 · Istanbul University Observatory Solar Observations

Solar Images Saturday, 23 October 2021

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3234 px)

Time: 11:58 UT
Observer: Özgecan ÖNALTAŞ
g: 5
f: 23
R: 73
Seeing: 4 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 2

Group 2 · HS_ – 1

Group 3 · AX_ – 4

Group 4 · CSI – 8

Group 5 · DSI – 8

RDS data file (.gzd)

[Gözlem]
Tarih=23.10.2021
Saat=11:58
Gözlemci=Özgecan ÖNALTAŞ
KontrolEden=Hikmet ÇAKMAK
Durumaçısı=25.59
Enlemaçısı=5.19
Boylamaçısı=338.56
Boylamfark=0
GKalite=4
GDurum=
Kuzeyaçısı=0.0
Sırano=19305
AyRasatNo=16
RasatÖnceki=22.10.2021
RasatSonraki=25.10.2021

[Leke Grupları]
Grupsayısı=5:1:4
LekeSayısı=23:2:21
RölatifSayı=73:12:61
01=AX_ 02 +24.302 -21.216 317.344 +0.000 0000 0 +24.682 -20.190 +23.923 -22.242 +24.302 -20.690 +24.302 -21.742
02=HS_ 01 -17.604 -05.825 332.735 +0.000 0000 0 -16.597 -04.988 -18.610 -06.662 -17.604 -05.488 -17.604 -06.162
03=AX_ 04 -25.682 -31.680 307.492 +0.000 0000 0 -23.498 -29.958 -27.865 -32.178 +00.000 +00.000 +00.000 +00.000
04=CSI 08 -21.347 -59.860 279.474 +0.000 0000 0 -19.861 -54.408 -22.834 -63.764 -21.347 -54.608 -21.347 -63.564
05=DSI 08 -26.416 -59.208 279.352 +0.000 0000 0 -24.839 -55.728 -27.993 -62.688 -26.416 -55.928 -26.416 -62.488

20211023.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 →

2021/20211023_oot · OOT · 10 frames · 214.3 MB · 11:46:28–12:42:48 UT

12:23:38 UT · 40 ms