JMI RB66 Reverse Binocular Telescope - 6"

JMI RB66 Reverse Binocular Telescope - 6"
Item # JM-RB66
  • JMI RB-66 Reverse Binoculars are built with two aligned Newtonian optical tubes on an alt-az mount.
  • Dual 6" f/5 primary mirrors and 1.6" diagonal secondary mirrors with 9.5" clearance between light paths and variable eyepiece spacing from 2" to 3.25".
  • JMI RB-66 Reverse Binoculars have six motors for adjusting inter-ocular (eye) spacing, focusing and optical tube alignment with the touch of a button.
  • Fold-away motorcycle type handle bars for aiming and handlebar and wheels for easy movement of the instrument.
  • JMI RB-66 Reverse Binoculars are compatible with MAX computers.
  • Finderscope, eyepieces, and batteries are included!
  • JMI Telescopes are a "Special Order" item. Please contact our expert sales staff for deposit, lead times and information regarding additional accessories. Thank you!


JMI RB66 Reverse Binocular Telescope - 6"

Are you curious about what a Reverse Binocular Telescope is? Then step inside the ingenious Jim's Mobile RB design which allows you to look down into the eyepieces, either sitting or standing, to see what is in the sky behind you, instead of straining to look up as is the case with normal binoculars. JMI Reverse Binoculars are built with two aligned Newtonian optical tubes on an alt-az mount creating a very compact and comfortable viewing experience and the sizes available sizes 6" (RB-66), 10" (RB-10), 14.5" (RB-14.5) and 16" (RB-16). All models feature JMI's celebrated quality construction!

What makes the JMI Reverse Binocular telescope different? Other designs of this type usually involve manual adjustments of some kind for focus, eye spacing and image convergence. This results in a large amount of time needed to get the system set the way you want it. Sometimes it takes two people. Jim's Mobile has motorized all of those adjustments and the total "tweak" time is lowered from one or two hours to one or two minutes. These adjustments are now made by pushing buttons (while you are comfortably seated) and visually watching the results in real time. This is a huge advantage, especially if more than one person is going to be using the instrument.

The portable JMI RB-66 Reverse Binocular telescope includes an altitude-azimuth mount. Altitude-azimuth is sometimes abbreviated as alt-azimuth or just alt-az. An alt-az mount moves in altitude (up and down) on a horizontal axis and in azimuth (left and right) on a vertical axis like a gun turret on a tank. By comparison, an equatorial mount is essentially an alt-az mount that is tilted to match your latitude, allowing a telescope to track the stars with the addition of a simple clock drive. Both types of mounts have their advantages. Which one is best for a particular situation depends mostly on how one intends to use the telescope. The Altitude and Azimuth axis on the JMI RB telescopes operate as smooth as silk and optical encoders can be installed for use with a guiding computer to easily find objects.

The JMI RB-66 Reverse Binocular Telescope weighs approximately 50 lb. and has a height of 30.25" (from top of tripod to top of binocular with binocular locked into vertical position). It includes two modified 2" RCF-1 focusers with motors for motorized focusing, two 1.25" 30mm Wide-Angle Eyepieces and a Star Pointer Finder Scope.

JMI RB66 Reverse Binocular Telescope - 6" Features

  • Ease of Use: No bulky, complicated or expensive mount, just look down into the binocular to see the sky behind you.
  • Modified Reverse Crayford focusers and your choice of erect image or regular diagonals.
  • Motorized x and y axis for optical tube alignment.
  • 6vDC operation with a 4.5 amp-hour rechargeable battery and your choice of 110vAC/60Hz or 220vAC/50Hz charger.
  • Two Modified 2" RCF-1 Focusers with Motors for motorized focusing (Due to the design of the telescope, using 2" eyepieces or Barlows is not recommended.)
Jim's Mobile Product Number: RB66
Additional Information

Additional Information

Manufacturer JMI
Telescope Series JMI RB
Optical Design Newtonian Reflector
Mount Type Alt-Azimuth - Manual
Warranty 1 Year Warranty
Telescope Aperture 6"
Telescope Focal Length Not supplied by manufacturer
Telescope Focal Ratio f/5
Length of Optical Tube 30.25"
Optical Tube Outer Diameter 11"
Optical Tube Weight 49.4 lbs.
Mount Weight 9.6 lbs.
Total Telescope Weight 59 lbs.
Optical Coatings Fully Coated
Limiting Stellar Magnitude 13.3
Highest Useful Magnification Not supplied by manufacturer
Tube Color or Finish Gloss White
Eyepiece(s) Included None

Customer Reviews 3 item(s)

RB66 Reverse Binocular Telescope
Thanks for reinventing astronomy.... It's a whole new ballgame now.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Ralph Holt / (Posted on 3/3/2009)
RB66 Reverse Binocular Telescope
The West Yorkshire Astronomical Society, Pontefract, England, recently purchased a pair of 6-inch reverse binoculars following some outstanding reports about them. I have to say that everyone using them has been staggered by the improvement they give in the general view of the heavens. The old saying of 'seeing is believing' is very appropriate. I cannot describe the improvement in the view, you would really have to look for yourself. Thank you JMI for another outstanding product.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Kevin Read FRAS, Chairman WYAS / (Posted on 3/3/2009)
RB66 Reverse Binocular Telescope
Few binoculars can compare to the RB-66. ... If you're looking for breathtaking low- and medium-power views of star fields, nebulae, star cluster, and the Moon, give the RB-66 from JMI serious consideration. For observers who appreciate the wonderful views seen only through a true binocular telescope, the RB-66 is a real bargain.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Phil Harrington, Telescope Review, February 2004 A / (Posted on 3/3/2009)
Included Items

Included Items

  • Dual 6" Newtonian Reflectors
  • Alt-Az Mount Attached to a Pier Mount
  • Two Modified 2" RCF-1 Focusers with Motors
  • Two 1.25" 30mm Wide-Angle Eyepieces
  • Star Pointer Finder Scope
  • Battery: \r\n6vDC battery
  • AC Charger
  • Handlebar and Wheels
Questions & Answers

Product Questions

Can these binoculars be adapted or are they even appropriate for whale watching?
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