Prismatic (Refractor) Porro Prisms

More Information  · Supplied Accessories  · Images of Some Features Price $749.95 List Price $1,313.95 Magnification 22-67x Field of view 1000 yards 100' @ 22x; 37' @ 67x Near Focus 26' Eye Relief 20mm @ 22x Exit Pupil 4.55mm @ 22x Twilight Factor 46.90 Weight 5.6 lbs. Aperture 100mm Length 20" Armored Yes Waterproof Yes Warranty “No-Fault” Limited Lifetime

The 100mm aperture of this Celestron Regal F-ED gathers 64% more light than even a big 80mm spotting scope, with 25% higher resolution. For low light and long distance observing alike, this extra light grasp and resolution extends your usable observing time and helps you see the small details that make positive species identifications easier. Add the superior apochromatic color correction of the low dispersion fluoro ED optics, and you have a winning combination.

We know of no other 100mm ED apochromatic spotting scope that beats the features and price/performance ratio of the digiscoping-ready Celestron 100mm Regal F-ED 22-67x zoom spotter. Usable for birding, nature study, and casual astronomy, this big 45° angled viewing spotting scope makes large aperture color free spotting scope optics truly affordable.

Optical features of this scope . . .

• F-ED (fluoro extra-low Dispersion glass) lens: The large 100mm air-spaced doublet objective lens in the Regal F-ED uses one element of fluoro (FL) ED glass. This premium glass provides an extra measure of exceptionally natural color rendition and virtually no color fringing. (Please note that a fluoro glass lens is not the same optical composition as the fluorite crystal lens used in some very expensive spotting scopes, although the optical performance is very similar.) It uses a high transmission BaK-4 image erecting prism and is fully multicoated on all air-to-glass surfaces for the highest possible light transmission and contrast.

• 22-67x multicoated zoom: The eyepiece field of view is a quite good 100’ at 1000 yards at 22x. Even at 67x, it still measures a full 33’. The zoom is held in place by a collet mechanism. Simply turn the locking collar to remove the zoom from the scope body. This lets you replace it with any standard 1.25" astronomical eyepiece to expand the normal 24mm to 8mm focal length range of the zoom. A dust cap is provided to seal the scope body when the eyepiece is removed.

• Long eye relief: The eye relief is specified at a long and comfortable 20mm at 22x, assuring that there will be virtually no vignetting of the field for eyeglass wearers.

• Close focusing: The Regal F-ED close focuses down to 26’. Through the 100mm Regal F-ED, looking at a bird at that distance at 22x would effectively be the same as looking with your unaided eye from a distance of only about 1’ 2".

• Dual speed focusing: The Regal F-ED’s dual focusing knobs are located at the top right front of the prism housing to allow precise one-finger focusing with either hand, even while wearing gloves or mittens. They are semi-recessed to resist snagging on clothing or carrying case and are grooved for a sure grip. The rear knob is for fast seven-turn focusing to move from one end of the focus range to the other. The front knob is for very fine focusing, with 14 turns of the knob equaling one revolution of the fast focus knob. Both knobs move very easily, making focusing surprisingly fast.

• 45° viewing angle: The Regal F-ED’s 45° viewing angle is generally more comfortable than a straight-through model for watching treetop activity or for extended observing from a blind or back porch. It is also more convenient for observing couples of varying heights who must share a single scope, as there is little need to constantly raise and lower the tripod to a comfortable observing height for each observer, thanks to the angled viewing position.

• Twist-up rubber eyecup: The zoom’s rubber eyecup twists up to improve the contrast when observing without eyeglasses, then twists back down to retract the eyecup onto the eyepiece body for use with eyeglasses or sunglasses. The rubber eyecup can also be unthreaded from the eyepiece. This allows you to attach a DSLR camera body directly to the eyepiece, using a supplied adapter ring and an optional T-ring, for high magnification digiscoping through the zoom eyepiece

• Waterproof armored body: The scope body is lightly rubber armored for durability and to help shock-proof the optics. The armor also provides a sure grip in wet weather. The slide-out lens shade improves visual and photographic contrast. It is also rubber armored and has a sighting line built into it to help quickly center the scope on possible targets. The scope is O-ring sealed to be waterproof against sudden showers, but is not guaranteed to be fully submersible. The body can be rotated from side to side in its mount to switch from a landscape to a portrait orientation during photography. The body measures 20" long without eyepiece, 23" with eyepiece.

• Tripod mounting foot: The Celestron 100mm Regal F-ED has a mounting foot that mounts on any photo tripod having a standard 1/4"-22 thread mounting bolt. Because of the scope’s substantial 5.6 pound weight, a special balancing bar is supplied that fits between scope and tripod to let you balance the scope properly fore and aft so it does not tilt unexpectedly when you loosen your tripod’s pan handle or altitude lock. A good quality tripod with a substantial payload capacity approaching 10 pounds would be highly recommended.

• Supplied accessories: A water-shedding soft case is standard equipment. The case has zippered flaps that allow you to use the scope on a tripod while still in the case. The case has an adjustable length shoulder strap for carrying. The eyepiece is protected by a thread-on metal cover. A snap-in camera-type lens cover protects the objective lens. Dust caps are provided for the eyepiece collet in the body of the scope and for the 1.25" barrel of the zoom eyepiece. An adapter ring with photographic T-threads allows you to connect a T-ring and DSLR to the zoom eyepiece.

• Lifetime “no-fault" warranty: The Celestron 100mm Regal F-ED spotting scope has a lifetime no-fault warranty. If your scope breaks or becomes unusable, no matter how it happens or whose fault it is, Celestron will repair or replace your scope for just a $25 shipping and handling charge.