Solar Images Wednesday, 21 April 2021
‹ 20.04.2021 2021 22.04.2021 ›Photosphere sunspot drawing and RDS evaluation
- Time
- 07:25 UT
- Observer
- Olcay PLEVNE
- g
- 3
- f
- 9
- R
- 39
- Seeing
- 3 / 5
Sunspot groups and observation details →
Sunspot groups (from the drawing)
RDS data file (.gzd)
[Gözlem] Tarih=21.04.2021 Saat=07:25 Gözlemci=Olcay PLEVNE KontrolEden=Burçin TANIK Durumaçısı=-25.47 Enlemaçısı=-5.09 Boylamaçısı=266.5 Boylamfark=3 GKalite=3 GDurum=K.T Kuzeyaçısı=0.0 Sırano=19166 AyRasatNo=12 RasatÖnceki=20.04.2021 RasatSonraki=22.04.2021 [Leke Grupları] Grupsayısı=3:1:2 LekeSayısı=9:2:7 RölatifSayı=39:12:27 01=CSO 02 +18.513 +64.635 331.135 10.580 0000 0 +20.116 +70.460 +16.909 +59.223 +18.658 +68.317 +17.182 +59.965 02=CSI 06 -25.106 -05.237 261.263 30.283 0000 0 -21.938 -10.329 -28.274 -00.146 -22.421 -00.465 -27.751 -09.658 03=AX_ 01 -16.929 -61.342 205.158 -1.000 0000 0 -16.929 -61.342 -16.929 -61.34220210421.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 →
2021/20210420_ky · KY · 3 frames · 64.3 MB · 07:35:53–07:36:53 UT
2021/20210421_op · OP · 4 frames · 85.7 MB · 07:38:46–07:42:50 UT
Coronado H-α animations from frame sequences
No Coronado observation for this day.