A preliminary report on the observation of the asteroid occultation event on 2019 November 08

Exoplanet occultation, asteroid occultation,
solar research, comet observation, astrometry, etc.
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PTS
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來自: HK

A preliminary report on the observation of the asteroid occultation event on 2019 November 08

文章 PTS » 週日 10 11月, 2019 17:05

A preliminary report on the observation of the asteroid occultation event on 2019 November 08

Kenneith Hui and I arrived at Hokoon before 15:00 UTC, and by 15:13 UTC, the target star (GSC4757-00579-1) was located. A faint object was located to the NE of the target star. After comparing the image with the finder chart, this faint object was identified as Asteroid (1337) Gerarda.
A sequence of images (cropped to 800x600) were taken, and the asteroid was observed to move towards the target star, and by 16:24 UTC, the asteroid and the target star "merged".

At this point, exposure was reduced to 40 ms (later increased to 50 ms as seeing deteriated) and an AVI stream was started at 16:25:25 UTC. The AVI recording ran until 16:45 UTC, about 1 minute beyond the recommendation given by IOTA.

The on-screen image was monitored throughout the AVI recording, but the image of the target star was there throughout the whole AVI.
Result: The occultation was a MISS. No occultation was observed to have occurred at Hokoon.

Telescope: 50-cm f/8 RC reflector
Camera: ASI1600MM Pro, cooled to -15C
binned 2x2
exposure : about 7 s
The 1st image was not cropped, others were cropped 800x600
south is up and east to the left.
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Eddy So
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註冊時間: 週四 04 12月, 2008 22:35
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Re: A preliminary report on the observation of the asteroid occultation event on 2019 November 08

文章 Eddy So » 週日 10 11月, 2019 22:14

[Good Job]

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