Norwegian version here.
Flying at night is both beautiful and exciting, but not entirely without risk. Because of this, it is of utmost importance that you are well prepared and have the required knowledge to minimize risk and to avoid unpleasant surprises.
This book will give you the basic knowledge you will need to fly at night. It is also suitable if you want to fly helicopters at night – or if you want to brush some dust of your almost forgotten knowledge.
This book is also available at Apple Books or Google Play Books.