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PTS
週五 16 2月, 2018 07:06
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2018 February 15 Sun - AR12699
回覆: 6
觀看: 93

Re: 2018 February 15 Sun - AR12699

a short animation
PTS
週四 15 2月, 2018 22:47
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2018 February 15 Sun - prominences
回覆: 2
觀看: 35

2018 February 15 Sun - prominences

2018 February 15 Sun - prominences There are only a few faint prominences, notably on the SW ans SWW limb. Telescope: AP Starfire EDT 155 mm f/9. stopped to 50 mm (f/28) for disc images, with 4X telecentric lens (f/36) for closeups filter: Solar Spectrum SO1.5/0.3A with CERF prefilter Camera: ASI160...
PTS
週四 15 2月, 2018 22:20
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2018 February 15 Sun - AR12699
回覆: 6
觀看: 93

2018 February 15 Sun - AR12699

2018 February 15 Sun - AR12699 The tilt jig was adjusted slightly, but no improvement is achieved as far as fringes are concerned. The vignetting problem still persisted. AR12699 is close to the W limb. It remains active with flares mostly originating from the leading sunspot. Telescope: AP Starfire...
PTS
週三 14 2月, 2018 06:08
版面: 業餘天文研究專區 Amateur Astronomers' Research Area
主題: Nova in Scorpius: Nova Sco 2018 No. 2 = PNV J16484962-4457032
回覆: 0
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Nova in Scorpius: Nova Sco 2018 No. 2 = PNV J16484962-4457032

AAVSO Alert Notice 616 Nova Sco 2018 No. 2 = PNV J16484962-4457032 February 13, 2018 Event: Nova in Scorpius: Nova Sco 2018 No. 2 = PNV J16484962-4457032 Discovered by: Hideo Nishimura (Kakegawa, Shizuoka-ken, Japan, reported by S. Nakano, Sumoto, Japan, via CBET 4488) Discovery magnitude: unfiltere...
PTS
週二 13 2月, 2018 21:15
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2018 February 13 Sun - prominences
回覆: 2
觀看: 61

2018 February 13 Sun - prominences

2018 February 13 Sun - prominences There are only a few faint prominences, notably on the NW ans SW limb. Telescope: AP Starfire EDT 155 mm f/9. stopped to 50 mm (f/28) for disc images, with 4X telecentric lens (f/36) for closeups filter: Solar Spectrum SO1.5/0.3A with CERF prefilter Camera: ASI1600...
PTS
週二 13 2月, 2018 20:53
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2018 February 13 Sun - AR12699
回覆: 3
觀看: 43

2018 February 13 Sun - AR12699

2018 February 13 Sun - AR12699 The tilting jig was completed today, and used to observe in the afternoon. It seems the tilting method works. While the fringes are not totally eliminated, they are reduced to acceptable level (somewhat better than with my old Imperx camera without tilting). There is a...
PTS
週二 13 2月, 2018 09:02
版面: 業餘天文研究專區 Amateur Astronomers' Research Area
主題: PNV J00423439+4044255 - Probable Nova in M31
回覆: 0
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PNV J00423439+4044255 - Probable Nova in M31

ASASSN-18ca = PNV J00423439+4044255 - Probable Nova in M31 February 12, 2018 Event: Probable Nova in M31: ASASSN-18ca = PNV J00423439+4044255 Discovered independently by: - Koichi Itagaki (Yamagata, Japan; reported via CBAT TOCP) - All Sky Automated Survey for SuperNovae (ASAS-SN) (reported by J. Br...
PTS
週二 13 2月, 2018 06:34
版面: 業餘天文研究專區 Amateur Astronomers' Research Area
主題: Monitoring of GW Lib to support XMM-Newton observation
回覆: 0
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Monitoring of GW Lib to support XMM-Newton observation

AAVSO Alert Notice 614 Monitoring of GW Lib to support XMM-Newton observation February 12, 2018: Dr. Koji Mukai (NASA Goddard Space Flight Center) and colleagues have requested AAVSO observations of the WZ Sge type dwarf nova GW Lib in support of observations with the ESA XMM-Newton spaceobservatory...

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