The atlas presents spectroscopic and imaging observations of comets collected over approximately ten years of activity at the observatory. The spectroscopic observations were obtained with the 1.22 m Galileo Telescope, while imaging observations were acquired with the 1.82 m Copernico Telescope and the 0.67/0.92 m Schmidt Telescope at the Asiago Observatory (Italy). In total, the book includes observations of 47 comets. The document opens with a brief description of the atlas, including the observational strategy adopted during the survey and an overview of the data reduction procedures. The main body of the atlas consists of 47 individual comet entries. For each comet, the atlas provides a short description of the object and its activity, tables summarizing the main orbital and physical parameters, imaging observations, and a table listing all the observational circumstances of the collected spectra. This Zenodo record provides the complete atlas in PDF format (181 pages). The reduced spectra and associated observational data are available upon request. Researchers interested in accessing the dataset are invited to contact the ASIACO team via the atlas email address or the first author. Contact:atlantecomete@gmail.comandrea.farina.2@studenti.unipd.it