APOD: Orionid Meteors from Orion (2017 Oct 30)

Comments and questions about the APOD on the main view screen.
User avatar
APOD Robot
Otto Posterman
Posts: 2994
Joined: Fri Dec 04, 2009 3:27 am

APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby APOD Robot » Mon Oct 30, 2017 4:07 am

Image Orionid Meteors from Orion

Explanation: Meteors have been shooting out from the constellation of Orion. This was expected, as October is the time of year for the Orionids Meteor Shower. Pictured here, over a dozen meteors were caught in successively added exposures last weekend over Wulan Hada volcano in Inner Mongolia, China. The featured image shows multiple meteor streaks that can all be connected to a single small region on the sky called the radiant, here visible just above and to the left of the belt of Orion, The Orionids meteors started as sand sized bits expelled from Comet Halley during one of its trips to the inner Solar System. Comet Halley is actually responsible for two known meteor showers, the other known as the Eta Aquarids and visible every May. Next month, the Leonids Meteor Shower from Comet Tempel-Tuttle should also result in some bright meteor streaks.

<< Previous APOD This Day in APOD Next APOD >>

heehaw

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby heehaw » Mon Oct 30, 2017 8:49 am

Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken? It is surface brightness, so it is tricky.

ptirnovan
Asternaut
Posts: 1
Joined: Tue Sep 12, 2017 6:09 pm

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby ptirnovan » Mon Oct 30, 2017 9:47 am

I cannot find the website of Lu Shupei! Can anyone help me with his adress? I'm looking for more photos like that!

tetrodehead

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby tetrodehead » Mon Oct 30, 2017 9:55 am

Nice pic!
Exposure and processing details would be interesting.

saturno2
Commander
Posts: 588
Joined: Wed Jun 29, 2011 10:05 pm

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby saturno2 » Mon Oct 30, 2017 12:00 pm

beautiful image of "fireworks"

BDanielMayfield
Don't bring me down
Posts: 1466
Joined: Thu Aug 02, 2012 11:24 am
AKA: Bruce
Location: East Idaho

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby BDanielMayfield » Mon Oct 30, 2017 1:28 pm

heehaw wrote:Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken? It is surface brightness, so it is tricky.

Can any nocturnal creatures see the sky like this?

Don’t think it would be a good trade though. Daytime would be blinding. We’d have to live like bats.

Bruce
"Happy are the peaceable ... "

User avatar
Chris Peterson
Abominable Snowman
Posts: 13273
Joined: Wed Jan 31, 2007 11:13 pm
Location: Guffey, Colorado, USA

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby Chris Peterson » Mon Oct 30, 2017 1:31 pm

heehaw wrote:Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken?

It really comes down to how many photons you can collect. The eye only detects between 1% and 5% of the photons it receives. A good CCD detects close to 100%. So with a better designed retina, we could do much better. We also have a tiny aperture to admit those photons- just a few millimeters, compared with tens to hundreds of centimeters for telescopic optics. So if we had huge, bulging eyes we could do much better. And finally, our retinal chemistry yields an exposure time of tens of milliseconds, compared with minutes or hours for electronic imaging systems. If we could selectively increase our integration time, we could do much better.
Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

User avatar
rstevenson
Quis custodiet ipsos custodes?
Posts: 2440
Joined: Fri Mar 28, 2008 1:24 pm
Location: Dartmouth, NS, Canada

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby rstevenson » Mon Oct 30, 2017 2:20 pm

This sort of eye might help...
alien eye.jpg

Rob
You do not have the required permissions to view the files attached to this post.

User avatar
bystander
Apathetic Retiree
Posts: 16309
Joined: Mon Aug 28, 2006 2:06 pm
Location: Oklahoma

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby bystander » Mon Oct 30, 2017 2:31 pm

ptirnovan wrote:I cannot find the website of Lu Shupei! Can anyone help me with his adress? I'm looking for more photos like that!

It's not a web site. It's an e-mail address. Send an e-mail.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

User avatar
Ann
4725 Å
Posts: 8467
Joined: Sat May 29, 2010 5:33 am

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby Ann » Mon Oct 30, 2017 3:18 pm

BDanielMayfield wrote:
heehaw wrote:Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken? It is surface brightness, so it is tricky.

Can any nocturnal creatures see the sky like this?

Don’t think it would be a good trade though. Daytime would be blinding. We’d have to live like bats.

Bruce


Right you are. :(

Today's APOD is a very nice image! :ssmile:

Ann
Color Commentator

jisles

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby jisles » Mon Oct 30, 2017 9:12 pm

Judging from the photo, the radiant is above and to the left of Betelgeuse, and not near Orion's Belt as stated in the caption.

User avatar
neufer
Vacationer at Tralfamadore
Posts: 14417
Joined: Mon Jan 21, 2008 1:57 pm
Location: Alexandria, Virginia

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby neufer » Mon Oct 30, 2017 9:47 pm

jisles wrote:
Judging from the photo, the radiant is above and to the left of Betelgeuse,
and not near Orion's Belt as stated in the caption.

The APOD doesn't really say 'near' and Orion's Belt is more readily recognizable.

http://www.skyandtelescope.com/astronom ... -10192014/ wrote:
2014’s Orionid Meteor Shower
By: Kelly Beatty | October 19, 2014

<<The Orionid shower is a long-lasting affair that runs from roughly October 17th to 25th and peaks around the morning of the 21st. This shower is actually a complex of several threads of debris that arrive over several days. These radiants (the points in the sky from which the meteors appear to radiate) are grouped near Orion's club.

Since Orion doesn't rise in the east until around midnight, you'll have to stay up at least that late (or get up very early) to see any Halley bits flashing across the sky. For observers around 40° north latitude, the shower's radiants rise high in the eastern sky (at least 45° up) by about 2 a.m. So that's about when the meteor activity is best. Dawn's twilight begins stealing into the east about four hours later.

Like the Eta Aquariids, the Orionids tend to be faint and swift, as they strike our atmosphere at 66 km per second (only November's Leonids come in faster) — and they often leave briefly glowing trains.>>
Art Neuendorffer

User avatar
Fred the Cat
Theoretic Apothekitty
Posts: 388
Joined: Mon Feb 22, 2016 4:09 pm
AKA: Ron

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby Fred the Cat » Tue Oct 31, 2017 2:05 am

Meteor? Doubt it but either nose cones aren't very tough or there are some big birds out there. :no:
Feynman's Felicity "Only ascertain as a cat box survivor"

User avatar
neufer
Vacationer at Tralfamadore
Posts: 14417
Joined: Mon Jan 21, 2008 1:57 pm
Location: Alexandria, Virginia

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby neufer » Tue Oct 31, 2017 2:34 am

Click to play embedded YouTube video.


Fred the Cat wrote:
Meteor?

Doubt it but either nose cones aren't very tough or there are some big birds out there. :no:
Art Neuendorffer

User avatar
Ann
4725 Å
Posts: 8467
Joined: Sat May 29, 2010 5:33 am

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby Ann » Tue Oct 31, 2017 3:18 am

neufer wrote:
jisles wrote:
Judging from the photo, the radiant is above and to the left of Betelgeuse,
and not near Orion's Belt as stated in the caption.

The APOD doesn't really say 'near' and Orion's Belt is more readily recognizable.


Yes, because Orion's Belt is the only place in the entire sky where we can see three bright stars in an almost perfect row.

Ann
Color Commentator

jisles

Re: APOD: Orionid Meteors from Orion (2017 Oct 30)

Postby jisles » Tue Oct 31, 2017 3:24 pm

The caption said: "here visible JUST above and to the left of the belt of Orion".


Return to “The Bridge: Discuss an Astronomy Picture of the Day”

Who is online

Users browsing this forum: Ahrefs [Bot], CommonCrawl [Bot] and 1 guest