Lynds' Catalogue of Dark Nebulae (LDN)

This catalog is an updated version from the published version. The catalog was based on the red and blue prints of the National Geographic - Palomar Observatory Sky Atlas. The...本目录为已公开发布版本的更新版本。本目录基于《国家地理-帕洛玛天文台星空图册》的红蓝冲印底板制作而成。