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Re: How to create synthetic images of stars with gaussian psf in IDL. [message #92978 is a reply to message #92970]

Mon, 04 April 2016 10:43

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 4/4/16 9:01 AM, Sonu Tabitha wrote:
> On Monday, April 4, 2016 at 1:13:27 PM UTC+5:30, Sonu Tabitha wrote:
>> I want to create a synthetic image to resemble a stellar field
>> (say covering an area of 255 by 255 pixels, with a total of about 4
>> stars having Gaussian PSF). The rest of the image has to be filled
>> with constant background and noise, as present in the entire image,
>> but devoid of stars. I want to create this to test a source
>> extraction algorithm that I have developed. I am a beginner in IDL.
>> Can you please help me out in coding?
>
> Is there any way to do it with FLTARR?

FLTARR just makes an array of floats (by default 0.0's) of a given size.
You might use it, but that will the least of your worries.

Mike
--
Michael Galloy
www.michaelgalloy.com
Modern IDL: A Guide to IDL Programming (http://modernidl.idldev.com)

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[Message index]

		How to create synthetic images of stars with gaussian psf in IDL. By: Sonu Tabitha on Mon, 04 April 2016 00:43
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Sonu Tabitha on Mon, 04 April 2016 07:59
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Jeremy Bailin on Tue, 05 April 2016 07:18
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Jeremy Bailin on Tue, 05 April 2016 07:24
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Sonu Tabitha on Mon, 04 April 2016 08:01
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Michael Galloy on Mon, 04 April 2016 10:43
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Sonu Tabitha on Mon, 04 April 2016 21:15
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Sonu Tabitha on Mon, 04 April 2016 21:22
		Re: How to create synthetic images of stars with gaussian psf in IDL. By: Sonu Tabitha on Thu, 07 April 2016 05:06

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