Author Topic: weird objects  (Read 10159 times)

ElisabethB

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Re: weird objects
« Reply #60 on: October 13, 2010, 08:07:30 pm »
 :o

ElisabethB

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Re: weird objects
« Reply #61 on: October 14, 2010, 05:08:45 pm »
and another one

Eric F. Diaz

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Re: weird objects
« Reply #62 on: October 14, 2010, 07:13:32 pm »
Any explanation ?  :D

I've gotten a few like the ones you posted, Elisabeth. To be perfectly frank, I haven't a clue as to what has happened in these examples.  :D

Eric
« Last Edit: October 14, 2010, 07:18:34 pm by Eric F. Diaz »
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Caelum videre iussit et erectos ad sidera tollere vultus.
"He bid them look at the sky and lift their faces to the stars."

--Ovid, Metamorphoses 1. 85-86

ElisabethB

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Re: weird objects
« Reply #63 on: October 14, 2010, 07:30:20 pm »
that's the first time I've gotten a 'real' galaxy in SNZoo  :D

Eric F. Diaz

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Re: weird objects
« Reply #64 on: October 14, 2010, 07:50:15 pm »
that's the first time I've gotten a 'real' galaxy in SNZoo  :D


This is the first time that I've seen a 'real' galaxy from SNZoo!  :D  ;)

Eric
« Last Edit: October 14, 2010, 07:51:59 pm by Eric F. Diaz »
Eric's Journal

Caelum videre iussit et erectos ad sidera tollere vultus.
"He bid them look at the sky and lift their faces to the stars."

--Ovid, Metamorphoses 1. 85-86

Eric F. Diaz

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Re: weird objects
« Reply #65 on: October 14, 2010, 08:09:35 pm »
Here's another first, at least for me. This is the first candidate that I've gotten in SNZoo that actually looks 'round'.  :D

« Last Edit: October 14, 2010, 08:19:16 pm by Eric F. Diaz »
Eric's Journal

Caelum videre iussit et erectos ad sidera tollere vultus.
"He bid them look at the sky and lift their faces to the stars."

--Ovid, Metamorphoses 1. 85-86

Eric F. Diaz

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Re: weird objects
« Reply #66 on: October 14, 2010, 08:27:45 pm »
I think they missed the target on this one!  :D

Eric's Journal

Caelum videre iussit et erectos ad sidera tollere vultus.
"He bid them look at the sky and lift their faces to the stars."

--Ovid, Metamorphoses 1. 85-86

Eric F. Diaz

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Re: weird objects
« Reply #67 on: October 14, 2010, 08:30:29 pm »
Bet this one is a very faint variable in our own galaxy.

Eric's Journal

Caelum videre iussit et erectos ad sidera tollere vultus.
"He bid them look at the sky and lift their faces to the stars."

--Ovid, Metamorphoses 1. 85-86

ElisabethB

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Re: weird objects
« Reply #68 on: November 01, 2010, 08:29:15 pm »

ElisabethB

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Re: weird objects
« Reply #69 on: November 26, 2010, 08:17:56 pm »
any ideas ?

robert gagliano

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Re: weird objects
« Reply #70 on: November 27, 2010, 02:56:51 pm »
The tail certainly looks like artifact...possibly a cosmic ray hit?

ElisabethB

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Re: weird objects
« Reply #71 on: December 14, 2010, 05:46:31 pm »
I really like the subtraction image (dark matter distribution ?  ;) ;D ;D)

ElisabethB

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Re: weird objects
« Reply #72 on: January 12, 2011, 05:37:37 pm »
boomerang ?  golfclub ? ;D

robert gagliano

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Re: weird objects
« Reply #73 on: January 13, 2011, 05:28:26 pm »
"PTF takes the minimum depth image required to capture a supernova and moves on. This trade off between image quality and the number of galaxies you can get through is just something we have to live with" (from FAQ). The image subtraction process also produces artifacts. There are many known causes of "weird objects" (image artifacts) in CCD (charged-coupled device) imaging. Rarely, of course a "weird object" may be a real object. Much has been written on this topic in many astrophotography websites, books, and magazines. Below is one good discussion (not totally exhaustive or comprehensive) from the European Southern Observatory. It might be productive and interesting for one of the superzooites who has the time, patience and expertise to go through all the images posted in "weird objects" and categorize them by likely cause. Maybe we will learn something or find one that deserves followup?
http://www.eso.org/~ohainaut/ccd/CCD_artifacts.html

ElisabethB

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Re: weird objects
« Reply #74 on: January 28, 2011, 05:52:04 pm »