Guess what the Graph Shows!

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Re: Guess what the Graph Shows!

Postby Arneb » Sat Mar 03, 2018 10:12 pm

Stars and a plane is correct. The plane is not the point.

ETA: I admit, this is a subtle one, and the rather striking difference in the appearance of the sky between the two photos makes it harder.

Ah, and the game we are playing is "spot the important difference".
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Re: Guess what the Graph Shows!

Postby Lance » Sat Mar 03, 2018 11:07 pm

Are they from the same (your) place 6 months apart?
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Re: Guess what the Graph Shows!

Postby Arneb » Sun Mar 04, 2018 11:06 am

No, only two weeks. Which explains why the second photo is a lot worse in terms of "pretty pictures": The Moon ruined the sky in the second image.
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Re: Guess what the Graph Shows!

Postby Lance » Sun Mar 04, 2018 3:37 pm

I got nuthin
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Re: Guess what the Graph Shows!

Postby Arneb » Mon Mar 05, 2018 9:32 am

It may take a bit or research.

You may recognize a well-known asterism at one of the edges of the image. That may lead you to the constellation which (almost in its entirety) displayed in the photo. THEN you might look for things that are interesting in that constellation.

Or something like that. The photos were taken on 14 Feb and 2 March. The full Moon was rising on the opposite horizon when the second photo was made, which makes the important difference harder to spot.
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Re: Guess what the Graph Shows!

Postby Arneb » Tue Mar 06, 2018 12:56 pm

<crickets>
Anyone?
<crickets>

OKOK, the tight grouping of stars on the left is the Pleiades, and the constellation shown is Perseus.
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Re: Guess what the Graph Shows!

Postby Arneb » Sat Mar 10, 2018 9:32 pm

OK, sorry.

The second photograh shows a minimum of Algol. It's quite tricky to pick up the minima, which are short, and it's not easy to photograph, especially in late winter/early spring when a low position in the Northern sky, longer light hours and rotteh German weather all conspire against you. The son did it for a school project, with a camera mounted on a tripod. Algol is towards the lower middle of the two photos, in the upper right corner of the little quadrangle of stars. It clearly outshines its neighbours in the first photo (with the plane track), but not in the other one.

Next up would bei Heid, as before, or anyone else who's interested.
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Re: Guess what the Graph Shows!

Postby Lance » Sat Mar 10, 2018 9:37 pm

Arneb wrote:or anyone else who's interested.

Have we done anything with labias recently? (Yes, I do that to annoy you.)
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Re: Guess what the Graph Shows!

Postby Lianachan » Sat Mar 10, 2018 9:53 pm

Been a while since I've done anything with labias, certainly. Wife's working away from home for a few weeks.

Arneb - that's a cool school project! And sorry for "labias".
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Re: Guess what the Graph Shows!

Postby Arneb » Sat Mar 10, 2018 10:05 pm

Never mind, I'll just throw in something about the "Celtic race" or how Gaelic has totally chaotic spelling to get back at you :D .

Yeah, the project is cool. He was asking me about something astronomical to do, and of the four things I offered (Algol, documenting an entire month of Moon phases, catching an opposition loop of a planet, filming the eclipse of Aldebaran on March 19), he chose the most iffy and difficult.
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Re: Guess what the Graph Shows!

Postby Lance » Sun Jul 15, 2018 5:20 am

Anyone?
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