Search found 428 matches

by yltansg
Wed Dec 08, 2021 4:36 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

Hi Mr Chia and solar enthusiasts, 7Dec - There was a 1 hour imaging window interspersed with thin clouds. I used the Solar Spectrum H-Alpha SUNA (0.65 Angstrom) on a Celestron C11 fitted with a full-aperture D-ERF for this session. On this day, the features of the Sun look like one from a solar mini...
by yltansg
Thu Dec 02, 2021 1:44 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

Sun, 1 Dec 2021. In 540nm...... Sunspot 2899and 2900 visible as 3 sunspots at the edge of the southern belt. All three showed umbra with a small penumbra. In the northern belt, only sunspot 2902 is visible to me as 3 ultra tiny spots with no penumbra. I can't see 2901 and 2903 honestly. In Cak........
by yltansg
Thu Dec 02, 2021 1:26 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

Glad to see solar observing promoting in schools. Great work Alfred. As of this sunspot cycle, its quite disappointing as the sunspots are SMALL. Activities are low if compared to the previous cycle. Prominences are also small and long filaments are relatively rare. As such, l am quite happy that l...
by yltansg
Wed Nov 24, 2021 11:17 am
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

A very active chromoshere
by yltansg
Mon Nov 22, 2021 8:12 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

21Nov - The solar disk was relatively quiet. Global Oscillation Network Group (GONG) showed 1 sunspot https://blogger.googleusercontent.com/img/a/AVvXsEgWYEYAy_aMEfiG4eIf_Hxm4at695ox3RYmiLWKzzeLxQRxJSzzpcuSpRashksjEAo9TbZZ5YzwEVBoZ6y9zojYLC47ErFYAv9gZEIyhCcVtC1O6lMnu_MAasa-27MJSLFCAGFWANx3xoYY3AG0wC...
by yltansg
Sun Nov 07, 2021 2:11 pm
Forum: Buy and Sell
Topic: WTS: Borg 77ED II (SOLD)
Replies: 2
Views: 4063

Re: WTS: Borg 77ED II

Hi KK,

Sent you a PM with an offer :) .

Alfred
by yltansg
Thu Oct 28, 2021 3:23 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

An expert in Ukraine added his magic touch to bring out even more features: https://blogger.googleusercontent.com/img/a/AVvXsEi5hxpDUv5IOuZk1t6D-mt5hRbUkVUwZCbWEMo8KbB9j4wtV-Q_ja45MuMmNo-8baXc4tslwRGmFN2O-wEMIwzqgux1VMX-CYAGOAdNbRigWU0WqZD5Ez804LpGZfxz8cnjPlGKe9Jowjms37r1CcBVihlcZgsaDMUEQDdC8dTzLiR3...
by yltansg
Tue Oct 26, 2021 7:16 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

26Oct. Tracking AR2887, it is the one to observe as it harbours beta-gamma magnetic field capable of M-Class flares.

The magnificent magnetic structures around the spots give us a clue on energy it harbours.


Alfred
by yltansg
Mon Oct 25, 2021 4:17 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

Thanks, Superiorstream for sharing your thoughts.



Alfred
by yltansg
Sun Oct 24, 2021 9:41 pm
Forum: Astronomy Events & Observation Sessions
Topic: Solar cycle 25
Replies: 163
Views: 83293

Re: Solar cycle 25

24Oct21. Used a 76mm refractor to capture the full disk of the Sun in H-Alpha wavelength. More sunspots are appearing. It should be an interesting week ahead. https://blogger.googleusercontent.com/img/a/AVvXsEhAYdxwMLVpqHUdgJRCcamBKrNeH2uIYJ4U73FYwBhxze3y0yVtzhWEZLmVg-XKd2YJU26zR86qZ1ikcytmRyvATtHz8...