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Usage of Skymapper images #15

@dcorre

Description

@dcorre

The survey covers about 98% of the southern sky (DR1) so it might be a good solution to use them as reference images. Need to check limiting magnitude for DR1-DR2.

Some of out telescope are deeper than the survey so be careful.

Information about downloading images:
http://skymapper.anu.edu.au/how-to-access/#public_cutout

2 steps procedure:

It will list all the images overlapping the sky area defined by POS and SIZE (in degrees) in a csv file.

  • Loop over the url provided in the csv file (get_image column) to download each image.

  • Stack the images, as no stacked images seem to be provided and make a mosaic.

Limitation:

  • apparently RA dec size is limited between 0 and 0.17deg (ERROR: Right ascension component of SIZE (0.5 deg) must be between 0.0 and 0.17 deg)
  • apparently no stack image is provided, so will need to stack the data ourself. To be checked

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