Checkout this Nikon 1200mm f/11 lens - Nikon Rumors
AF-S NIKKOR 800mm f/5.6E FL ED VR
RARE Nikon AU-1 focusing unit with strap for 400mm 600mm 800mm 1200mm lenses | eBay
This Rare Nikon 1200mm Lens Setup is Over 3 Feet Long | PetaPixel
Rare 1,200mm Nikon Lens Can Be Yours for a Cool $5,750 | Digital Trends
Nikon NIKKOR Z 180-600mm f/5.6-6.3 VR Lens (Nikon Z)
Amazon.com : Nikon AF-S FX NIKKOR 800mm f/5.6E FL ED Vibration Reduction Fixed Zoom Lens with Auto Focus for Nikon DSLR Cameras : Camera Lenses : Electronics
6 of the most ridiculous lenses ever made - Amateur Photographer