Up for sale a Tamron 150 - 600 in EOS mount in excellent condition BUT it has an intermittent fault where it wont auto focus sometimes also common with these lenses is the rubber grips on the zoom and focus get stretched and loose , I've replaced them with self adhesive grips which work much better.
These are a great lens for birding ( never tied it for astrophotography ) and I also used it as a 95mm spotting scope which worked very well with powers up to 100x
Includes box , instructions , original grips hood and caps