City and sky map generator for website with final high quality image as final product

IMPORTANT! READ BEFORE POST: any application with pre-set text (copy & paste) will be automatically rejected. If we perceive that you have not read the project you will not be taken into consideration. We recommend you that you show evidence that you have read the project and you comprehend it. THE PROJECT: we want something similar to the following website [login to view URL] Navigate the website and pay special attention to the CITY MAPS and STAR MAP generation. This is what we are looking for. We are looking for someone skilled enough to make us our own city and sky map generation. You will have to face two main challenges: 1. How to make the online mapping generation (I guess it would have to be related with an API sky chart and something similar for the city maps) with all the frames, types of colors and the options to add the grids, constellation names and constellation lines and the Milky Way. You can check other similar websites for inspiration. 2. The final product must be a high quality PDF/JPG image ready to be printed in 70x50cm. You will work upon the following website: [login to view URL] We can agree to split the payment in two parts, one half after the realization of the city or sky map, and the other half after finishing both city and sky map. Or if you preferred, one single payment once the project is done.