[AstroPy] Help with APLpy

John K. Parejko parejkoj at uw.edu
Thu Feb 2 12:47:44 EST 2017

Though it’s not APLpy, you could try astropy.visualization.make_lupton_rgb (just added in astropy v1.3):


If you increase the Q parameter, and play with stretch, you might get something that remains astrophysically consistent, while still showing your source of interest. Note that it requires the images be aligned, but you should be able to pass in the results from aplpy’s reprojection.


> On 2Feb 2017, at 05:09, Thomas Robitaille <thomas.robitaille at gmail.com> wrote:
> Hi Chika,
> The make_rgb_image function takes a number of arguments to control the brightness of each band:
> http://aplpy.readthedocs.io/en/stable/api/aplpy.make_rgb_image.html#aplpy.make_rgb_image
> e.g. vmin_r, vmax_r and so on.
> Cheers,
> Tom
> On 1 February 2017 at 08:51, Chika Chukwuemeka <chikachukwuemeka at gmail.com> wrote:
> Hello,
> I successfully made a composite-band image of a WISE YSO source using the make-RGB command in APLpy. However, the source i needed to mark is barely visible. How do I change the relative intensities of the different bands in order to bring it out more clearly? I guess it's the blue band which needs turning up a little.
> Reagards,
> Chika
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