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MODEL 4504 TELESCOPE SPECIFICATIONS
Optical design ................................................................Newtonian Reflector
Clear aperture ..............................................................114mm (4.5”)
Focal length....................................................................910mm
Focal ratio (photographic speed) ..................................f/8
Resolving power ............................................................1.0 arc secs
Multi-coatings on objective lens ....................................Standard
Limiting visual stellar magnitude (approx.) ....................12.4
Image scale ..................................................................1.6°/inch
Maximum practical visual power ..................................325X
Optical tube dimensions
(dia. x length)..........................................................14cm x 86.4cm (5.5” x 34”)
Eyepieces
Modified Achromatic ..............................................H 25mm (0.965” O.D.)
Modified Achromatic ..............................................H 12.5mm (0.965” O.D.)
Modified Achromatic ..............................................SR 4mm (0.965” O.D.)
Barlow ....................................................................3x magnification
Telescope mounting........................................................German equatorial mount
Setting circle diameters ..........................................6.2cm (2.45")
Input voltage ..........................................................12-volts DC
Motor Drive System ................................................
DC servo motors with encoders, both axes
Slow-Motion Controls ....................................................Electric, 7 speeds, both axes
Hemispheres of operation ..............................................North and South, switchable
Materials
Tube body ..............................................................Aluminum
Mounting ................................................................Die-cast aluminum
Telescope net weight:
(telescope only, without batteries, eyepieces)................10.5 kg (23 lbs.)
Telescope shipping weight
(telescope, accessories, instruction manual, packing) ..14 kg (31 lbs.)
Battery Life (approx.)
with Starfinder ........................................................20 hrs.
STARFINDER SPECIFICATIONS
Processor ......................................................................68HC11, 8MHz
Flash Memory ................................................................512KB, reloadable
Keypad ..........................................................................10 key
Display............................................................................2 line, 16 character LCD
Backlight ........................................................................Red LED
Coil Cord ........................................................................24"
STARFINDER DIMENSIONS
Length ............................................................................14.2cm (5.60")
Width (LCD end) ............................................................78.0cm (3.08")
Width (Connector end) ..................................................53.5cm (2.10")
Depth ..............................................................................23.5cm (0.93")