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Based on Astronomy magazine’s telescope "report cards," this telescope is best used for . . .
  |  |  |  |  |  |  Terestrial Photography | | Lunar Photography | | Planetary Photography | | Star Cluster, Nebula, and Galaxy Photography |
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| This Vixen ED100SF is a substantial 100mm aperture full-sized apochromatic refractor that provides an excellent value for the serious amateur astronomer who wants to put big scope performance on his existing equatorial mount. The Vixen’s air-spaced medium focal ratio f/9 doublet apochromatic optical system uses an ED (Extra-low Dispersion) glass element to reduce chromatic aberration to essentially invisible levels in both visual and photographic applications. Combining ED glass with the intrinsically lower chromatic aberration of an f/9 system (when compared with a faster focal ratio scope) basically eliminates chromatic aberration in the Vixen ED100SF. There is virtually none of the violet fringing visible around the Moon, planets, and brighter stars that you find with conventional achromatic scopes. Colors are true and natural. Resolution and contrast are high in this fully multicoated Vixen refractor, often revealing subtle low contrast lunar and planetary details that are invisible in lesser scopes. The ED100SF optical tube is supplied with tube mounting rings and a dovetail mounting plate that fits Vixen mounts, the Celestron CG-5 and Advanced Series go-to mounts, and the Meade LXD75 go-to mount. The dual large ribbed focusing knobs let you focus the scope precisely with either hand, even when wearing gloves in cold weather. The retractable dew shield/lens shade extends smoothly and easily. While no eyepiece is supplied with the system, to allow you to customize your observing experience to your precise requirements, the ED100SF has a precision-machined 2" rack and pinion focuser for use with 2" star diagonals, image erectors, or wide-field eyepieces. A dual T-thread 1.25" flip mirror star diagonal that fits into the focuser’s 2" accessory holder is also standard equipment. The flip mirror is threaded for 2" filters. This flip mirror lets you switch instantly between two different 1.25" eyepieces to change magnifications at the turn of a knob (or switch between a camera using a standard T-ring and an eyepiece). Optional eyepieces are shown in the flip mirror diagonal in the image of the optical tube to the left, but they do not come with the optical tube. The scope is equipped with a 9 x 50mm crosshair finderscope to help you center the scope on objects of interest. A hard carrying case is also standard equipment. Optically the scope is very good. Due to its medium f/9 focal ratio and fully multicoated apochromatic ED optics, it has sharp, high-contrast images that are free of the spurious color halos of chromatic aberration. Mechanically, the scope is very well made and finely finished, as is typical of all Vixen products. If you need a top-quality refractor apo refractor that is not too big, and is priced just right, this Vixen ED100SF is a good one to consider.
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| | Dew shield, tube rings and dovetail, carry handle, dual T-thread 1.25" flip mirror star diagonal, 7 x 50mm finder, hard carrying case. |
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Toll-Free Telephone Astronomics: 800-422-7876; Christophers, Ltd.: 800-356-6603
Alternate Telephone: 405-364-0858 24 Hour Fax Line: 405-447-3337
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Saturday Noon - 5 PM CST
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Saturday Noon - 5 PM CST
Astronomics / Christophers, Ltd.
680 S.W. 24th Ave.
Norman, OK, 73069
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