I use military night vision in combination with my telescopes and this allows me to view Ha night sky objects in real time. This book is a fantastic resource of all the Ha nebula objects. The maps are cleared of all the usual objects and focus only on the nebula. Each nebula is drawn to size and the darker the colour then the brighter the nebula.
In the back are tables of all nebula with location co-ordinates, sizing and author commentary plus cross references to the map pages.
This book enables me to walk from one nebula to the next and the next... it’s so easy to use.
I am working my way through the Sharpless objects, I just passed 180 of 313, (I only started 5 months ago). This book really allows me to maximise the meagre amount of time we get outside observing in the UK. Highly recommended!