Astronomy Technology Today
New MOTOFOCUS, Piggyback Mount and Carrying Case
MOTOFOCUS for Meade ETX
all experienced the nagging vibrations that can result from the slightest touch
of a focus knob. While this may take only a few seconds to dampen, that
can feel like an eternity when trying to achieve perfect focus at high
magnifications Were it not for this phenomenon, there would be no JMI
today. The company was built on its MOTOFOCUS, the inaugural product that
JMI first introduced in 1983.
MOTOFOCUS permits hands-off, ultra-fine vibration free
focus control via a hand control powered by a standard 9-volt battery. The
system uses a proprietary circuit design that is similar to pulse-width
modulated circuitry that offers automatic two-speed control that starts in fine
focus mode for approximately 4 seconds then shifts into high speed for quick
large adjustments required when changing eyepieces that aren't parfocal.
Releasing the focus button and then reactivating it automatically shifts the
circuit back to fine control.
JMI now offers an ultra compact MOTOFOCUS for Meade's
ETX125, ETX105 and ETX90. This was not an easy application considering
that the focus knob of these scopes moves in and out almost a full inch from one
end of focus to the other. This new MOTOFOCUS employs a 1/16-inch spring
pin installed perpendicular to the focus shaft matched to a slotted coupler that
allows the motor drive to slide in and out as it turns. The drive motor is
remarkably small, hardly larger than a sugar cube, but still robust enough for a
lifetime of dependable service. Because the ETX MOTOFOUCS fits all three
scopes in Meade's ETX line, it's transferable if you decide to upgrade to a
The JMI ETX MOTOFOCUS is priced at only $140.
Piggyback Mounts for Celestron NexStar SE
JMI has announced a new piggyback mount for
Celestron's SE series SCTs. The mount quickly attaches to the side
dovetail that holds the scope to the fork for carrying cameras and other 1/4-20
standard camera mount threaded accessories. Visit www.jmitelescopes.com
for your specific model and price.
JMI Carrying Case for CPC 1100 GPS
JMI carrying cases are purpose designed, with no
sharp corners that gouge furniture, doorways or auto upholstery, and "fits
like a glove" economy of space that still leaves enough interior room for
ample protective foam. JMI's larger cases feature 10-inch all-terrain
wheels, as on its new CPC 1100 GPS case. JMI's CPC 1100 GPS case is priced
at only $504, with shipping paid in the lower 48 states.