9
Specifications
Discovery Sky Trip
ST50
Discovery Sky Trip
ST70
Discovery Sky Trip
ST80
Optical design
refractor
refractor
refractor
Optics material
glass
glass
glass
Optics coating
fully coated
fully coated
fully coated
Aperture, mm
50
70
80
Focal length, mm
360
400
400
Focal ratio
f/7.2
f/5.71
f/5
Highest practical
power, x
100
140
160
Eyepiece barrel
diameter
1.25"
1.25"
1.25"
Eyepieces
8mm (45x)
20mm (18x)
10mm (40x)
20mm (20x)
25mm (16x)
9mm (44x)
Barlow lens
+
+
+
Diagonal prism
+
+
+
Finderscope
optical, 2x
optical, 5x24
optical, 5x20
Mount
AZ
AZ
AZ
Tripod, mm
aluminum
400—1250
aluminum
400—1250
aluminum
560—1200
Accessory tray
—
+
+
Backpack
+
+
—
Shoulder bag
—
—
+
The manufacturer reserves the right to make changes to the product range and specifications without
prior notice.
Care and maintenance
•
Never, under any circumstances, look directly at the Sun through this device without a special
filter, or look at another bright source of light or at a laser, as it may cause PERMANENT RETINAL
DAMAGE and may lead to BLINDNESS.
•
Take the necessary precautions when using the device with children or others who have not read or
who do not fully understand these instructions.
•
Do not try to disassemble the device on your own for any reason. For repairs and cleaning of any
kind, please contact your local specialized service center.
•
Stop using the device if the lens fogs up. Do not wipe the lens! Remove moisture with a hair dryer or
point the telescope downward until the moisture naturally evaporates.
•
Protect the device from sudden impact and excessive mechanical force.
•
Do not touch the optical surfaces with your fingers. Clean the lens surface with compressed air or a
soft lens cleaning wipe. To clean the device exterior, use only the special cleaning wipes and special
tools that are recommended for cleaning the optics.
•
Store the device in a dry, cool place away from hazardous acids and other chemicals, away from
heaters, open fire, and other sources of high temperatures.
•
Replace the dust cap over the front end of the telescope whenever it is not in use. Always put
eyepieces in their protective cases and cover them with their caps. This prevents dust or dirt from
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