JMI RB10 Reverse Binocular Telescope - 10"

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JMI RB10 Reverse Binocular Telescope - 10"
Item # JM-RB10
  • JMI RB-10 Reverse Binoculars are built with two aligned Newtonian optical tubes on an alt-az mount.
  • Dual 10" f/4.7 primary mirrors and 2.25" diagonal secondary mirrors with 10" clearance between light paths and variable eyepiece spacing from 2" to 3.25".
  • JMI RB-10 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-10 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 RB10 Reverse Binocular Telescope - 10"

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-10 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-10 Reverse Binocular Telescope weighs approximately 68 lb. and has a height of 58" at Zenith (measured from top of binocular to bottom of tripod with binocular in 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 RB10 Reverse Binocular Telescope - 10" 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: RB10

Additional Information

Additional Information

Manufacturer JMI
Telescope Series JMI RB
Optical Design Newtonian Reflector
Mount Type Alt-Azimuth - Motorized
Warranty 1 Year Warranty
Mount Weight 68 lb
Optical Coatings Aluminum
Limiting Stellar Magnitude 14.5
Tube Color or Finish Gloss White

Customer Reviews 3 item(s)

RB10 Reverse Binocular Telescope
The RB-10 is a deep space scope. I have used it to look at galaxy clusters with absolutely breathtaking results. Imagine seeing four or five 12th magnitude galaxies hanging as if suspended in mid-air!! You can see the wake of the Swan Nebula without a filter. Field of view for this scope can be determined by considering that it is just two 10 f/4.7 scopes, so you can use the normal formula.... The included 25mm eyepieces deliver about 48x magnification. Using a higher power only means the 'tweaking' or rather 'refining' needed takes a few extra seconds (that's right, seconds, remember everything is motorized!
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Tom Johnson, Production Manager, JMI / (Posted on 3/3/2009)
RB10 Reverse Binocular Telescope
Tell Jim I'm a 'Happy Camper!' I've looked through hundreds of telescopes in my life and I've never seen the nebulosity around Merope until I used the RB-10, and there it was plainly in site, visually.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Tony Hallas / (Posted on 3/3/2009)
RB10 Reverse Binocular Telescope
A professor and several of us serious astronomers spent the night trying to find words to describe what we were seeing. We were dumbstruck, blown away,'s unspeakable. The views are beyond the power of mere mortals to put into words. The RB-10 changes everything. It is the greatest piece of optical equipment I've ever looked through.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Paul Carmody / (Posted on 3/3/2009)
Included Items

Included Items

  • Dual 10" 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
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