Ineed an instruction booklet on how to use the Jason Rotary power 540 telescope.
given one with no instructions on how to use. Need website or business address.

Hi Salkeyo, 

Jason telescopes are manufactured by Bushnell ---
http://www.bushnell.com/index.html

Instruction Manuals are here --
http://www.bushnell.com/support/manuals.html

Identifying your product:
Each product has a 6 digit number printed somewhere on it, match that
number with the number listed below. If there is not a number to match
it, simply refer to the product name.

I don’t see your model listed using the numbers you provided, so
perhaps it’s an older telescope. I’d recommend first looking at the
manuals of similar models to see if they give you enough information
to operate yours. If that doesn’t work, then contact the company.

Contact information --
http://www.bushnell.com/support/contact.html

Good luck and enjoy your telescope! 

--K~

search terms:
 
Used Google advanced search for pdf files with the terms:  

Jason telescope manual 

This led me to Bushnell’s pdf file for the Deep Space telescope where
it was referred to as a “Jason Telescope.” From there I went to
Bushnell’s homepage.

I don't believe that I could have rec'd a more complete or detailed answer!
Can't wait to send to the recommended contact sites.  Thanks SO much. Salkeyo

I realize this post is a bit old, but wanted to add some information
on the Jason line for people searching.  This is from Bushnell's
public relations department although it doesn't appear on any of their
websites:

Jake Levin founded Jason/Empire, Inc. in 1947.  Jake and his son,
Dick, started the business by importing binoculars from France, as
well as cigarettes and pearls from the Orient.  The product was sold
to jewelry stores and catalog showrooms.  The company?s name was
created by shortening the name of ?Jake and Son? to get Jason.  Empire
was the name of a brand of products the company sold.  Jason?s
original location was on the 8th floor of a building at 12th and
Walnut in downtown Kansas City, Missouri.  The company later moved to
a facility in Kansas City on Warwick Boulevard.  As the business
continued to grow, Dick was responsible for the expansion and
evolution of the binocular and telescope business into a major
competitor in the U.S. Sports optics market.
Carson Companies, Inc. of Minneapolis acquired Jason/Empire, Inc. in
1977.  In 1987, Jason introduced the Perma Focus binocular.  This
patented binocular eliminated the need for focusing and revolutionized
the binocular industry.  GlassOn, the first binocular exclusively for
eyeglass wearers, was introduced in 1991.  The eyeglass wearer could
obtain a wide angle, full field of view when using the binoculars
while wearing eyeglasses.  Other innovations included: the graphite
binocular, upscale consumer packaging, clam packaging, the ?Easy
Track? telescope mount, and the telescope dual-position diagonal
eyepiece.

In 1992, Bausch & Lomb a.k.a. Bushnell, purchased Jason from Carlson
Companies and moved the sports optics operation to the current
facility in Overland Park, Kansas.  The name of the division was
changed from Bushnell to Bausch & Lomb Sports Optics Division.

Bausch & Lomb divested the Sports Optics Division in 1995 and Bushnell
became a wholly owned subsidiary of Worldwide Sports & Recreation, Inc
(WSR).  WSR was a leading designer, manufacturer, and marketer of
brand name sporting goods and outdoor-recreational products.

Since then, Bushnell has changed hands again and the Jason name has
been discontinued.  It is no longer used in new products produced by
Bushnell and  many of the more popular models were simply rebranded as
Bushnell models.  Hope that adds a little bit of information for those
looking for information on Jason models.

Matthew McDermott
Chief Binocular Officer
http://www.binocularoutlet.com/jason-binoculars.html