香港天文論壇

2024 April 06 Sun - Solar surface in white-light, with AR13627, AR13628, AR13629, AR13630, AR13631, AR13632 and possible AR1363a. . Observation through clouds, and low in the sky. . AR13627 shows up at (N09E06). A single sunspot is observed. AR13628 shows up at (N08E28). A large sunspot, with full p...

2024 Solar Eclipse - 1st night in Waco (2)

After a 25-hour flight, and 2-hour driving, we arrive in our temporary observation site in Waco.
It seems all the equipment survived the flight.

2024 solar eclipse - First night in Waco.

Just arrive in Waco. The sky clear up after 9 pm, and I am able to locate my orientations, with UMa high up, and Polaris clearly visible.
Image taken with my hand-held Sony RX10iii, at 24 mm, ISO4000.

Images of AR13622 and possible AR1362a

Images of AR13624

2024 April 01 Sun - Solar surface in Ca-K, with AR13617, AR13619, AR13620, AR13622, AR13624, AR13625 and possible AR1362a. . Observation through clouds. . AR13617 shows up at (S13W81). No sunspot is observed, leaving just some plages. AR13619 shows up at (N18W84). A sunspot is observed, embedded in ...

Images of possible AR1362a

Images of AR13624

2024 April 01 Sun - Solar surface in white-light, with AR13617, AR13619, AR13620, AR13622, AR13624, AR13625 and possible AR1362a. . Observation through clouds. . AR13617 shows up at (S13W81). No sunspot is observed, leaving just some faculae. AR13619 shows up at (N18W84). A sunspot is observed, embe...

2024 May 10 Asteroid occultation event (16096) 1999 US6 occults UCAC4 345-085711 on 2024-May-10 at 20:34 UT I've prepared finder charts from DSS and The Sky 6. ------------------------------------------------------------ Details: Asteroid : (16096) 1999 US6 Magnitude: 18.9 Star: UCAC4 345-085711 (GS...

2024 May 09 Asteroid occultation event (189562) 2000 SX212 occults UCAC4 368-151311 on 2024-May-09 at 15:54 UT I've prepared finder charts from DSS and The Sky 6. ------------------------------------------------------------ Details: Asteroid : (189562) 2000 SX212 Magnitude: 20.5 Star: UCAC4 368-1513...

Images of AR13617 and AR13619

Images of AR13615

2024 March 29 Sun - Solar surface in Ca-K, with AR13614, AR13615, AR13617, AR13619, AR13620, AR13622 and AR13623. . Observation through clouds, at high GAIN, thus very noisy images. . AR13614, appears at (N16W77). A single sunspot with full penumbra is observed, embedded in plages AR13615 shows up a...

Images of AR13619