香港天文論壇

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2018 April 19 Sun - prominences on W limb Prominences show up on the NWW, W, SWW and SSW limb. These images are very faint prominence on the W limb . As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very tedious ...

2018 April 19 Sun - prominences on SWW limb Prominences show up on the NWW, W, SWW and SSW limb. These images are very faint prominence on the SWW limb . As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very tedi...

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2018 April 19 Sun - prominences on SSW limb Prominences show up on the NWW, W, SWW and SSW limb. These images are very faint prominence on the SSW limb . As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very tedi...

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2018 April 19 Sun - prominences on NWW limb Prominences show up on the NWW, W, SWW and SSW limb. These images are very faint prominence on the NWW limb . As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very tedi...

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2018 April 19 Sun - AR12706? On 2018 April 18, a minor eruption showed up on the NEE limb, indicating a possible AR is turning to the front. Today, a very active flare with many filaments comes to the front. In pseudo white light, several tiny spotlets are visible. NOAA has not yet assigned a number...

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2018 April 13 Sun - prominences on SW limb Prominences show up on the E, NEE, SSE, SW and SSW limb. The prominence on SW limb is huge and show northward material movement. As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task...

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2018 April 13 Sun - prominences on SSW limb Prominences show up on the E, NEE, SSE, SW and SSW limb. The prominence on SSW limb is half off-disc and half on-disc. As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes ...

2018 April 13 Sun - prominences on SSE limb Prominences show up on the E, NEE, SSE, SW and SSW limb. The prominence on SSE limb shows rapid changes during this short observation. As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. Th...

2018 April 13 Sun - prominences on NEE limb Prominences show up on the E, NEE, SSE, SW and SSW limb. These images are very faint prominence on the NEE limb . As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very ...