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The Moon occluding a star, while being occluded by Earth...

Started by Yu Gu , May 16 2022 01:15 PM

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8 replies to this topic

#1 Yu Gu

Ranger 4

topic starter

Posts: 325
Joined: 18 Jun 2006
Loc: Morgantown, WV

Posted 16 May 2022 - 01:15 PM

I always like to see lunar occultations. This is the first time during an eclipse.

Equipment: TEC160FL, QUADTCC, Sony A7RII. ISO 800, exposure: 3.2s

Clear skies,
Gu

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#2 Jim Davis

Fly Me to the Moon

Posts: 5,154
Joined: 05 Jul 2014
Loc: Lewisberry, PA

Posted 16 May 2022 - 01:26 PM

Yes, we watched that, too.

Edit: Nice image btw

Edited by Jim Davis, 16 May 2022 - 01:27 PM.

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#3 RLK1

Vanguard

Posts: 2,080
Joined: 19 Apr 2020

Posted 16 May 2022 - 01:59 PM

I'm not sure which star it was but I could see it in my 7x50 binoculars so it was fairly bright. Awesome eclipse event all the way around. If I realized how long the eclipse was going to be, I would have taken out my 16" and observed some DSOs, too!

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#4 SabiaJD

Viking 1

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Joined: 20 Feb 2005
Loc: Clarks Summit, PA

Posted 16 May 2022 - 03:22 PM

The star in question is SAO 159317. a 6th magnitude star in the constellation of Libra.

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#5 David Knisely

James Webb Space Telescope

Posts: 17,622
Joined: 19 Apr 2004
Loc: southeastern Nebraska

Posted 16 May 2022 - 03:37 PM

I'm not sure the moon was exactly being "occluded" by the Earth, unless you mean at moonset, as the Earth never blocked the moon from our view. At Hyde Memorial Observatory, we could see several stars close to the moon's disk even early in the partial phases, particularly the 7th magnitude HD 137463 (SAO 159263) located west-southwest of the moon during the partial phase before totality, and the magnitude 5.5 star HD 138413 (SAO 159330) which appeared just northeast of the moon during totality. In fact, during the early partial phases, one of our club member's video camera showed HD 137463 quite easily even when the moon was less than half obscured. In addition, during totality, the magnitude 6.2 double star HD 138268 (SAO 159317 or ADS 9681) was occulted by the moon. Clear skies to you.

Edited by David Knisely, 16 May 2022 - 03:48 PM.

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#6 Larry Mc

Ranger 4

Posts: 385
Joined: 29 Sep 2008
Loc: Pittsburgh, PA.

Posted 16 May 2022 - 06:57 PM

hi Gu,

I caught that star too! During totality, around 11:45pm, I noticed that the Moon’s limb was heading toward a faint star.

I watched it till 11:55:40pm when the Moon occulted the star!!! A nice treat! Here’s a close-up. (using my 80mm Kson f6.3 Refractor & ZWO ASI294MC camera & L-Pro filter, Exp = 25 seconds, Gain = 25 of 500, Brightness = 50%.)

I also have a short video of the occultation: https://youtu.be/-pGA1cl5dJc

Here's my full observing report: http://stellar-journ...nar Eclipse.pdf