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RB Telescopes
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All
Reverse Binoculars

RB-66
Reverse Binocular |
RB
Reverse Binocular Telescopes
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Features |
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Ease
of use (no bulky, complicated or expensive mount, just look down
into the binocular to see the sky behind you) |
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Protective cover |
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RB-10 = White (available in black by
special order) |
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RB-66 = White (available in black by
special order) |
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Six motors for adjusting inter-ocular (eye)
spacing, focusing and optical tube alignment with the touch of a button |
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Modified Reverse Crayford focusers |
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Fold-away motorcycle-type handlebars
for
pointing the instrument |
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Handlebar and wheels
for easy movement
of the instrument (optional) |
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Compatible with MAX computers
(optional) |
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Battery operation |
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JMI's celebrated quality construction |
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Specifications |
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Type:
Dual Newtonian reflectors |
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Mount:
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RB-16 = Alt-Azimuth on a pier |
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RB-14.5 = Alt-Azimuth on a pier |
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RB-10 = Alt-Azimuth on a pier |
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RB-66 = Alt-Azimuth with Pebble Formica
for smooth azimuth operation, Celestron
tripod (26" retracted, 42" extended) |
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Mirrors: |
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RB-16 = 16" f/4.5 primary mirror, 3.5" diagonal secondary mirror |
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RB-14.5 = 14.5" f/4.5 primary mirror,
3.5" diagonal secondary mirror |
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RB-10 = 10" f/4.7 primary mirror, 2.5"
diagonal secondary mirror
< Will be
changing to f/5.0 |
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RB-66 = 6" f/5 primary mirror (reviewed
in October 2001 Astronomy Magazine),
1.6" diagonal secondary mirror |
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Diagonals: Erect Image or Regular
(specify)
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Clearance Between Optical Tubes: |
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RB-16 = 8" |
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RB-14.5 = 8" |
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RB-10 = 9" |
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RB-66 = 9.5"
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Eyepiece Spacing: Variable from
2" to 3.25" |
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Alignment: Motorized x and y axis for optical tube alignment |
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Power: 6vDC operation with a 4.5 amp-hour rechargeable battery and 110vAC/60Hz or 220vAC/50Hz charger (specify). (Anticipated
battery life will be measured in months.) |
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Binocular Weight: |
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RB-16 =
Approximately
175
lbs |
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RB-14.5 = Approximately
155
lbs |
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RB-10 = Approximately 70 lbs |
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RB-66 = Approximately 49.4 lbs (78.4 lbs
with Carrying Case) |
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Mount
Weight: |
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RB-16 = Approximately 29
lb |
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RB-14.5 = Approximately 29 lbs |
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RB-10 = Approximately 25 lbs |
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RB-66 = Approximately 9.6 lbs |
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Binocular Height: |
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RB-16 = 77.5" (vertical on pier) or 36" (horizontal
on pier) |
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RB-14.5 = 69"
(vertical on pier) or 34" (horizontal on pier) |
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RB-10 = 59" (vertical on pier) and 35"
(horizontal on pier) |
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RB-66 =
30.25" (from top of tripod to top of
binocular with binocular locked into vertical position) |
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Binocular Width: |
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RB-16 = 46" |
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RB-14.5 = 45" |
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RB-10 = 34" |
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RB-66 = 24.5" |
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Binocular Depth: |
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RB-16 = 22.5" |
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RB-14.5 = 22" |
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RB-10 = 12" |
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RB-66 = 11" (folded) |
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Binocular Tube Length: |
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RB-16 = 66" |
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RB-14.5 = 59" |
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RB-10 = 47"
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RB-66 =
27" |
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Shipping Crate or Box Size: |
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RB-16 = approximately 50" x 50" x
52" crate |
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RB-14.5 = approximately 50" x 50" x 52"
crate |
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RB-10 = approximately 50" x 50" x
52" crate |
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RB-66 Binocular = 36-1/2" x 17-3/4" x
29-1/4" box (85.4 lbs)
RB-66 Tripod Mount = 30-1/2"
x 10-1/4" x 11" box (12.2 lbs) |
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Standard Equipment |
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Focusers |
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RB-16 = Two Modified 2" RCF-1 Focusers with Motors
for motorized focusing |
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RB-14.5 = Two Modified 2" RCF-1 Focusers with Motors
for motorized focusing |
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RB-10 = Two Modified 2" RCF-1 Focusers with Motors for motorized
focusing |
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RB-66 = Two Modified 1.25"
RCF-mini1 Focusers with Motors
for motorized focusing |
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Eyepieces (Due to the
design of the telescope, we do not
recommend using 2" eyepieces or Barlows.) |
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RB-16 = Two 1.25" 30mm Wide-Angle
(subject to availability) |
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RB-14.5 = Two 1.25" 30mm Wide-Angle
(subject to availability) |
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RB-10 = Two 1.25" 30mm Wide-Angle
(subject to availability) |
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RB-66 = Two 1.25" 20mm Wide-Angle
(subject to availability) |
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Star Pointer Finder Scope |
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Battery: 6vDC battery (includes AC charger) |
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Product Manual |
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See
our Document
Library. |
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RB-16 =
Document Number
65 |
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RB-14.5 =
Document Number
65 |
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RB-10 =
Document Number
67 |
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RB-66 =
Document Number 64 |
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Pricing and Shipping Notes |
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Telescope
Prices
are for the standard telescope
configuration.
Upgrades, Accessories, Crating and
Shipping are at additional cost. |
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A
Deposit in the amount of 10% of the Telescope Price is
required with all telescope orders (5%
is Non-Refundable). The remaining
amount due (90%) must be paid before the
telescope is shipped. |
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Crating
and Shipping Charges
are not included in the listed price. If the telescope
will be shipped to your location, there
will be an additional charge
for crating (except the 6" RB-66
which requires the purchase of a
Carrying Case for shipping) and an additional shipping
charge. Please call for a shipping
quote. Due to fluctuations in the
market, the shipping quote is only valid
for 30 days. |
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RB-16 = $300 crating charge
Buy Now |
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RB-14.5 = $300 crating charge
Buy Now |
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RB-10 = $250 crating charge
Buy Now |
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RB-66 = No crating charge but
Carrying Case Required for Shipping
(See Below) |
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Telescopes are not usually kept in stock and therefore require time to
build. |
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RB Optional Upgrades
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No Upgrades
at This Time

RB...
$RFQ** |
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| No Upgrades
at this time
**
RFQ = Request for Quote (Ask us for a price quote.) Upgrade prices are based on upgrading from standard equipment.
<< HIDDEN TEXT >> |
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RB Optional Accessories
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Handlebar
and Wheels
Wheelbarrow-style
Transportation

RBWHL16
$159
Buy
Now
RBWHL14
$159
Buy
Now
RBWHL10
$159
Buy
Now |
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Handlebar and Wheels for RB-10,
RB-14.5 and RB-16 For easily moving the fully assembled binocular telescope over
smooth surfaces. It uses 5" solid-rubber ball-bearing wheels.
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Truss-Rod
Light Shrouds
(Set of Two)

RBSHRD16
$199
Buy
Now
RBSHRD14
$199
Buy
Now |
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Truss-Rod Light Shrouds for
RB-14.5 and RB-16 Blocks stray light and air currents and helps keep dust off
of the mirrors. Made of light-weight black fabric with elastic at both ends.
One for each optical tube.
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Solar
Filter Inserts
(Set of Two)
For RB-66 ONLY
SFRB66
$200
Buy
Now |
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Solar Filter
Inserts for RB-66
Durable glass Solar Filters for inserting into the
RB-66 aperture openings to view the sun.
They are made from machine-polished optical glass elements and are triple-coated
with a scratch-resistant nickel-chromium stainless steel alloy (modified Orion
filters).
WARNING:
Do NOT use any telescope device for looking at the sun without appropriate
solar filters. Doing so may cause permanent blindness.
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A Solar Filter installed in the RB-66. |
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Proper Alignment
Procedure
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The Reverse
Binocular Telescope tubes must be aligned properly for comfortable viewing.
Click on the image shown at left to see a graphic illustration of the
two-step alignment process. If the two images you see are not aligned, as
represented by the first illustration (step 1), align the images with the
horizontal adjustment as indicated by the arrow in step 1. At this
point
the two images should be lined up vertically (one image over the other) as shown in
the illustration of step 2. Next, bring the two images together with the
vertical adjustment as shown by the arrow in step 2. If you try to do
the two steps backwards (vertical adjustment before horizontal), the eyes
will tend to automatically merge the images horizontally which will give you
crossed eyes and cause eyestrain. Proper alignment (3), or any
misalignment, will be readily revealed using high-power eyepieces and
quickly alternating between the
use of the left and right eye. |
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This picture
shows production models of the RB-16, RB-10 and RB-66 all together with Jim
Burr, president of JMI Telescopes. |
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RB-16 |
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The final
RB-16 prototype had no substantial difference in design from the production
model except width and focal length. |
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The final
RB-16 prototype actually had 12" mirrors for testing and was narrower and
about 14" shorter than the final production model. |
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This is the
first RB-16 prototype |
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RB-14.5 |
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The RB-14.5 |
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The RB-14.5 |
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The RB-14.5 |
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The RB-14.5
requires an adjustable-height chair for best viewing. |
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The RB-14.5
requires an adjustable-height chair for best viewing. |
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RB-10 |
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This RB-10 includes the optional
handlebar and wheels for easy transport. The final production
version will have a modified handlebar that is attached to the end of the
tripod leg rather than separate handles attached to the sides of the leg
as shown in this picture. |
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The handle, included with the
handlebar and wheels option, inserts into one of the tripod legs. |
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This RB-10 includes the optional
handlebar and wheels for easy transport. The final production
version has a modified handlebar that is attached to the end of the
tripod leg (see above) rather than separate handles attached to the sides of the leg
as shown in this picture. |
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This RB-10 has the top cover removed
so you can see inside the reverse binocular. |
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The RB-10 includes the optional
handlebar (not shown) and wheels for easy transport. |
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The RB-10 prototype (left) is in the final phase of
design/construction. The RB-10 is now in production. |
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RB-66 |
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Our production manager, Tom Johnston,
is viewing a large sunspot with a prototype RB-66 which has been equipped
with solar filters. This picture shows how easy it is to
use the Reverse Binocular. WARNING:
Do NOT use any telescope device for looking at the sun without appropriate
solar filters. Doing so may cause permanent blindness. |
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The RB-66 has a handle on the top for
carrying. Here the binocular is being removed from the carrying
case. |
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The RB-66 is relatively easy to pick up
(even with the mount attached, as shown in this picture) using the handle located
on the top of the instrument. The binocular should only be lifted
at three points; the top handle (as shown), the base (locked into
position) and the folding handlebars (also locked into position). |
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The RB-66 includes a lock to hold it in
the vertical position for transporting. In this picture the vertical
lock is in the unlocked position. |
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The RB-66 carrying handle must be
removed in order to remove the top cover. |
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The RB-66 top cover can be easily
lifted after the handle and two side thumbscrews have been removed. |
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The RB-66 bottom cover is released by
removing four thumbscrews. |
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The RB-66 bottom cover slides away
after the thumbscrews have been removed. |
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The RB-66 optical tube is held by one
screw at the top end. The bottom end is held by part of the
mirror cell. |
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Once the mounting screw is removed you
can carefully slide the tube away from the mirror just enough to clear the mirror cell. |
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The RB-66 optical tube can now be
carefully lifted around the secondary mirror and removed from the system. |
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If the diagonals become misaligned,
they can be easily realigned by leveling them with the frame of the
binocular while in the vertical position. |
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The RB-66 buttons control the motorized
adjustments for tube alignments, eye spacing and focusing. These
buttons are on the handle assembly which folds up next to the binocular
for transportation and storage. |
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The RB-66 is designed for extremely
easy viewing without the need for a special chair or binocular
support. It is compatible with the NGC-microMAX, NGC-MAX, SGT-MAX
and Pocket PC running TheSky Pocket Edition from Software Bisque. |
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The RB-66 with Celestron tripod
(included). |
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The RB-66 with Celestron tripod
(included). A carrying handle is positioned on the top of the
binocular. |
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The RB-66 (front view looking inside)
showing the primary mirrors, secondary mirrors and focusers. |
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The RB-66 (side view) showing handle
bars folded up and optical system locked into vertical position for
transport. |
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The RB-66 is designed for extremely
easy viewing without the need for a special chair or binocular
support. |
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The twelfth and final prototype was very close to
the final production design. |
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Eleven prototypes were built, tested
and discarded as improvements were added and refined. This prototype improved on the
original mount and experimented with an open optical tube design. |
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The first experiment with
dual-newtonian
binoculars was simply two NGT-6 optical tube assemblies mounted on an alt-az frame. |
What
is the Reverse Binocular Telescope?
The RB Reverse Binocular
telescope 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. They are built with two aligned Newtonian optical tubes on
an alt-az mount creating a very compact and comfortable viewing experience.
The available sizes are 6" (RB-66), 10" (RB-10),
14.5" (RB-14.5) and 16"
(RB-16). (U.S. Patent No.
Des. 499,436)
Binocular telescopes show their superiority in two major areas;
1) enhanced visual clarity due
to improved contrast and resolution
and
2) complete elimination of eye fatigue.
According to research, there can be as much as a 40% improvement in
resolution of lower contrast visual material when viewing is binocular as
compared to monocular. ("Observing Experiments in Vision" by Tom Mote
in Observatory Techniques, Issue #10, Summer 1994)
Read
Bruce
Sayre's article "Binocular
vision science and why two eyes are better than one."

RB-66
Reverse Binocular |
What
is an Alt-Az Mount?
The 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. |
Customer
Comments
RB-16
"I met Jim Burr at the Riverside
Telescope Maker's Conference in the spring of 2005. There I
tried out the RB-10 for the first time. Using two eyes I could see
much more detail in Jupiter than using one eye through some larger
scopes. Deep sky was awesome. ...the RB-16 was out performing
it by a factor of 3 to 4 times. I did find both RBs to operate very
well mechanically and very comfortably using both eyes." (L.
W.) "One of my concerns was
handling the very large RB-16 by myself, I'm 62. However when Kathy,
my wife, maneuvered the RB-16 with ease, all my concerns went
away." (L. W.)
RB-14.5 "It's a home run with
bases loaded.... The most outstanding scope I've ever used."
(Ralph Holt)
"I've got
the scope (RB-14½) I've wanted all my life!" (P. C.)
RB-10 "My
compliments go to the chef. I received my RB-10 last week. It's
the most wonderful instrument I've ever had. It's everything everyone
said it would be and more. My description of it can only be the same
that everyone else told me when I asked them what they were like. It's
a hole other thing. I'm 65 years old and although it makes no
astronomical sense to do so, I just couldn't resist putting my eyes to it,
grabbing the handlebars, and going from horizon to horizon and spinning in
360's till I started to laugh. What a wonderful scope. The image
is magnificent. Thank you for your invention." (G. B.)
"Got it collimated and converged.
Wow! I was counting the stars in Messier 4 last night. Even
the 16" LX200 couldn't resolve the cluster like the RB-10.
Fantastic." (W. P.) "The Binoviewer is better than using a
single eyepiece but viewing through JMI's Reverse Binocular is 10 times
better than a Binoviewer." (Stan McDonald, GA, USA)
See
David Levy's blog entry on the RB-10 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." (Phone
call from Tony Hallas)"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, astonished...it'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." (Paul Carmody,
RB-10 owner who traded up from a 6" RB-66) "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!" (Tom Johnson, Production Manager, JMI)
RB-66 "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." (Kevin Read FRAS,
Chairman WYAS)
"P.S. We all (club members)
thought Sky and Telescope gave you a bad article on the big JMI BINOS!
We were disappointed in that review, and
those I have talked to also feel it was "not a fair
review." Anyway, we all disregarded that review as not
acceptably accurate information and we astronomers are smart enough to
figure out what works and what does not. I think the big binos are
great and I bet that it is a fun experience at the eyepiece."
(D. C.)
"Thanks for reinventing
astronomy.... It's a whole new ballgame now." (Ralph
Holt)
"...my RB-66 is terrific. You've
invented a great instrument." (B. K.)
"A group from the Fort
Wayne Astronomical Society, while in New Mexico this past September, put
our scopes aside and rented JMI's RB-66 for a night. We all agree
with Phil Harrington's assessment of the binoscope's spectacular seeing in
the night sky..." (Ron Kerr, Letters, June 2004 Astronomy)
"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. (Phil Harrington, Telescope
Review, February 2004 Astronomy)
"The Swan was
hanging suspended in a 3D star field with the bird's wake clearly visible,
awesome!" (Okie-Tex Attendee) "I could see far
more than just the core of M101 ... hinting at spiral structure.
This is impressive contrast for a 6" scope." (Okie-Tex Attendee) |
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Frequently Asked Questions
(FAQ)
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| Q. |
I've
seen this basic design before. What makes JMI's binoculars different? |
| A. |
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. We have 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. |
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|
| Q. |
Can
you give me some Pros and Cons regarding the Reverse Binocular design? |
| A. |
Pros
1) Using both eyes increases contrast by about 40% and gives a 3-D
effect (not true 3-dimensional).
2) Using both eyes is far more relaxing. Also, this design
allows one to comfortably look down into the binocular instead of craning
your neck backwards to look up as with regular binoculars.
3) Alignment with this type of binocular used to take hours but with
our motorized design it only takes minutes.
4) The Altitude and Azimuth axis operate as smooth as silk.
Optical encoders can be installed for use with a guiding computer to
easily find objects.
5) The RB-10, RB-14.5 and RB-16 have an optional Handle Bar and Wheels for easy
transport.
Cons
1) You must have two matching eyepieces to use the instrument.
2) It takes a little "getting used to," since it is so
different from what people are used to.
3) The instruments are a little bulky. The RB-66 is light
enough that most people can pick it up by the handle and move it, even
with the tripod attached. The RB-10 has a Handle Bar and Wheels
accessory available as an option. |
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| Q. |
How does a bino viewer compare to a binocular
telescope? |
| A. |
A
binocular telescope does not lose image quality through:
1) Splitting the light between two eyes.
2) Extra corrector lenses, as in a Barlow.
3) Vignetting.
Based on the experience of many observers, there is a certain "realism" in
the view through a true binocular telescope that cannot be duplicated
otherwise. |
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