DC Motor Drives and Light Filters
DC Single Axis Motor Drive with Hand Controller
Single-axis drive system suitable for the EQ-3 and EQ-7 German equatorial mount. A precise, crystal-controlled stepper motor, powered with 12V DC, provides accurate tracking of all celestial objects.
Specification
For astronomical imaging applications, there are two different correcting speeds. You can also switch between tracking on the northern and southern hemisphere. The motor can also be easily released to facilitate manual tracking.
Comes complete with motor, hand controller and battery pack (batteries not included).
Price - £39.99 (p&p £2.99)
COLOUR FILTER SET
Comprises 4 x threaded filters in total. Yellow #15, Red 25A, Green # 58, Blue #80, These filters will screw-in to most eyepiece barrels of 1 1/4 “ 32mm Format. Colour filters are essential tools of amateur and serious astronomers, allowing for the observation and photography of surface detail that is often invisible without filtration.
Red 25A
Features:
Red tint
14% light transmission
Dramatically reduces the transmission of blue and blue-green wavelengths
Improves apparent delineation of the Martian polar ice caps and maria
Green 58
Features:
Green tint
24% light transmission
Rejects blue- and red-toned structures on Jupiter, thereby increasing their contrast relative to lighter formations
Enhances Saturn's cloud belts and polar regions
Strongly increases contrast of Mars' polar ice caps
Increases contrast of atmospheric phenomena on Venus
Blue 80A
Features:
Blue tint
30% light transmission
Improves clarity of Jupiter's Red Spot
Brings out detail in Saturn's belts and polar phenomena
Makes a great contrast-enhancing lunar filter
Yellow 15
Features:
12% light transmission
Deep Yellow Planetary Filter: Boosts contrast of lunar features, accentuates red and orange features on Saturn, Jupiter, and Mars, reveals low-contrast cloud detail on Venus.
Price - £17.99 (p&p £1.99)