The Nikon D810a astrophotography camera has been listed as discontinued or on back order at some of the top camera retailers.

B&H Photo lists the Nikon D810a as discontinued, while Amazon says it is out of stock.

Adorama lists the D810a as on back order.

The Nikon D810a was launched nearly three years ago in February 2015 and was priced $3,995.

Via Nikon Rumors