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Scale the psf on images. [message #89968]

Mon, 12 January 2015 00:15

anes.tziamtzis
Messages: 9
Registered: January 2015

Junior Member

Hi

I would like to perform a live test during an upcoming observing run. I want to take a series of frames on various sources and check for variability on them. I would like to make the image subtraction as accurate as possible, thus I think that image subtraction should take place after the psf of the frames is matched.

Which technique you think is the best? I tried with the convolve script but the result is not good.

imconv = convolve( image1, image2, FT_PSF = psf)

image 1 the science frame and image is the psf frame that I created through iraf.

Any suggestions are appreciated

Thanks a lot.

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[Message index]

		Scale the psf on images. By: anes.tziamtzis on Mon, 12 January 2015 00:15
		Re: Scale the psf on images. By: rryan%stsci.edu on Mon, 12 January 2015 01:17
		Re: Scale the psf on images. By: anes.tziamtzis on Mon, 12 January 2015 04:38
		Re: Scale the psf on images. By: anes.tziamtzis on Tue, 13 January 2015 22:50
		Re: Scale the psf on images. By: Mats Löfdahl on Wed, 14 January 2015 00:43
		Re: Scale the psf on images. By: Mats Löfdahl on Mon, 12 January 2015 02:42
		Re: Scale the psf on images. By: rryan%stsci.edu on Mon, 12 January 2015 04:57
		Re: Scale the psf on images. By: bstecklu on Tue, 13 January 2015 00:59
		Re: Scale the psf on images. By: anes.tziamtzis on Wed, 14 January 2015 23:13
		Re: Scale the psf on images. By: Mats Löfdahl on Wed, 14 January 2015 23:58
		Re: Scale the psf on images. By: anes.tziamtzis on Thu, 15 January 2015 00:04
		Re: Scale the psf on images. By: Mats Löfdahl on Thu, 15 January 2015 02:19
		Re: Scale the psf on images. By: anes.tziamtzis on Thu, 15 January 2015 05:33
		Re: Scale the psf on images. By: Mats Löfdahl on Thu, 15 January 2015 07:08
		Re: Scale the psf on images. By: Mats Löfdahl on Thu, 15 January 2015 07:12

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