[AstroPy] Past Mention of Source Extractor Command in IRAF?

Wayne Watson sierra_mtnview@sbcglobal....
Tue Apr 28 19:58:52 CDT 2009


Just IRAF. Well, I can easily get around this in a paper I'm writing by 
just saying that IRAF is another tool that does source extraction. BTW, 
who created IRAF and who supports it?   I found the install pdf. Ah, NOAO.

I don't have it installed, since I'm on Win. I did did install Cygwin, 
but never got around to installing it there. It's not something I need 
immediately.

Rose Finn wrote:
> I am not sure if you are referring to astrometry.net, but I think it
> does much of what you describe:
>
> http://astrometry.net/
>
> Take care,
> Rose
>
> On Tue, Apr 28, 2009 at 8:25 PM, Wayne Watson
> <sierra_mtnview@sbcglobal.net> wrote:
>   
>> Probably not, but is what you mentioned source extraction? The idea is
>> that you take a picture of some part of the night sky, and then turn it
>> over to the source extractor. It twists, rescales, and turns your image
>> every which way until it matches 10 or more corresponding objects
>> (stars, etc.) in a photographic atlas of some sort. If it looks right,
>> you can then extract information about those objects and maybe others.
>> It's an astrometric tool.
>>
>> James Turner wrote:
>>     
>>>> I believe in some of my exchanges on this mailing list in the last
>>>> many works someone mentioned an IRAF facility akin to what is
>>>> popularly called source extract. Mention was made of what could be
>>>> considered a command name that somehow is used in connection with the
>>>> idea. Does anyone know what that single (command) word was or where I
>>>> would find the extractor topic discussed in IRAF?
>>>>         
>>> Is it noao.digiphot.apphot (type "help apphot")?
>>>
>>> James.
>>>
>>>       
>> --
>>           Wayne Watson (Watson Adventures, Prop., Nevada City, CA)
>>
>>             (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
>>              Obz Site:  39° 15' 7" N, 121° 2' 32" W, 2700 feet
>>
>>           All the neutrons, and protons in the human body occupy
>>           a cube whose side is 5.52*10**-6 meters (tiny!). That
>>           adds up to a 150 pound person. It's not a surprise that
>>           we are mostly space. (Calculation by WTW)
>>
>>
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>>
>>     
>
>
>
>   

-- 
           Wayne Watson (Watson Adventures, Prop., Nevada City, CA)

             (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
              Obz Site:  39° 15' 7" N, 121° 2' 32" W, 2700 feet  

           All the neutrons, and protons in the human body occupy
           a cube whose side is 5.52*10**-6 meters (tiny!). That
           adds up to a 150 pound person. It's not a surprise that
           we are mostly space. (Calculation by WTW)
 




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