What telescopes work best with the Explore Scientific Twilight I mount?
The Explore Scientific Twilight I mount is designed for a payload of up to 18 lb (8.2 kg). It suits small to medium sized refractors such as the AR102, ED102mm and ED80mm, and lightweight, fast Newtonians, with a Vixen-Style Universal Dovetail bar.
Does the Twilight I mount require batteries or a power supply?
No. The Twilight I is a manual alt-azimuth mount: you move it by hand and with the two slow-motion control cables.
Why is the adjustable angle head on the Twilight I important?
The adjustable angle head allows the mount to tilt, creating more clearance between the back of your telescope and the tripod legs. This prevents the telescope from colliding with the tripod when you are pointing it straight up towards the zenith.
Can I move the slow-motion controls on the Twilight I to either side?
Yes. The slow-motion control cables can be attached to either side of both the altitude and azimuth axes. This flexibility allows you to customize the setup for right or left-handed use and to position the knobs for easy access, regardless of your telescope's shape and orientation.
How does the Twilight I perform for viewing Jupiter with a 102mm refractor?
The AR102 and ED102mm are good matches. Weigh the tube with its diagonal and eyepiece against the capacity, then use the slow-motion controls to keep Jupiter centered as it drifts.
Is the Twilight I stable enough for observing the Andromeda Galaxy (M31) with an 80mm refractor?
Yes. The ED80mm is a match, and ED80 tubes weigh 3.4 kg (7.5 lb). An 80mm refractor suits wide views of the Andromeda Galaxy (M31) and Milky Way star fields.
What are the main advantages of a manual mount like the Twilight I compared to a GoTo mount?
A manual mount like the Twilight I offers several key advantages over computerized GoTo systems:
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Simplicity and Speed: There is no alignment procedure, software or power to set up.
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No Power Needed: It is completely self-sufficient, making it ideal for backyard sessions and remote dark-sky sites.
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Intuitive Learning: It encourages you to learn the night sky by manually locating objects ("star hopping"), which is a rewarding skill for any astronomer.
What is the maximum observing height of the Twilight I mount and tripod?
With the tripod legs fully extended, the top of the Twilight I mount head reaches a height of 55.5 inches. The center of the Vixen-style mounting bracket sits at approximately 53 inches.
How much does the Twilight I mount head weigh by itself?
The Twilight I mount head weighs 6.6 lb (3.0 kg) without the tripod. The tripod base weighs 11 lb (5.0 kg).
