Webb26 mars 2024 · This could only be the area called depth of focus, especially since slow telescopes like my f9 have larger depths of focus than most telescopes. I think spherochromaticism, an extra concave lens in my Nagler 13mm eyepiece, and the steep light cone of my f9 telescope are the sources of the phasing which I think occurred, but … WebbThe Celestron Travelscope 70 is an excellent telescope for beginners. It is cheap and very functional for its price. It has an aperture of 70mm that is great for viewing celestial bodies such as craters of the moon, moons, Jupiter’s rings …
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Webb9 dec. 2024 · The slow-motion control function is used to make small, precise movements of a telescope to keep the observed object in the field of view of our eyepiece. With controllers, the user can easily follow the star as it moves across the sky. Slow-motion control is often used on non-motorized telescope mounts in the form of… Read More … Webb23 dec. 2024 · A 200mm diameter f6 telescope collects more light than an 80mm f6 telescope, so the former is faster. No, that's wrong. A scope working at f2 is fast, a scope working at f10 is slow for example. Speed has nothing to do with aperture or light collection, it is the focal ratio. 2 Neil H Members 916 1,213 Author Posted December 21, … the problem with work
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Webbfocal length of this system and the F/ number? Is this a fast or slow system? Answer: The focal length is 3 x 1500 millimeters = 1500 millimeters, and F/ = 1500/254 = 5.9. It is a slow system because F/ > 3.0. Problem 2 – An amateur astronomer wants to buy a telescope and has a choice between three different systems that cost about the same: WebbSlow telescopes have a longer focal length and are generally better suited for viewing planets in our solar system and the Moon. Pros Higher magnification assuming the … WebbLong telescopes have a narrow view and a higher f-ratio. Short telescopes have a lower f-ratio and a wider view. Telescopes are made longer to reduce chromatic aberrations in their lens or mirrors. The longer the telescope the less curvature of the lens and less chance for chromatic aberrations. OK, that may be why, but what does that mean? the problem w jon stewart youtube