19mm Panoptic

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An excellent premium-quality medium power wide field eyepiece. The calculator below will let you see just how wide the field will be with your particular scope. For example, it will give you about a 1.13 degree field at 60x with a 10” f/4.5 Dobsonian. This will give you almost four and a half minutes with such a scope to observe an object as it drifts from one side of the eyepiece’s flat field to the other. That’s plenty of time for multiple observers to look at the object or for you to absorb as much detail as possible before having to reposition the scope. While it’s particularly well-suited for use with Dobsonian scopes, it can provide “picture window onto space” images with any telescope type. It uses an ED glass element for high contrast, making it an excellent choice for resolving globular clusters, planetary nebulas, etc. The 19mm Panoptic would be a welcome addition to any serious deep space observer’s eyepiece collection.

The 19mm Panoptic is a little short on eye relief at 10mm, so observers who must wear eyeglasses might want to consider the long 20mm eye relief of the 18mm TeleVue Radian instead. While the Radian has a narrower apparent field of view, its longer eye relief will not cut off the edges of the image for eyeglass wearers as the 19mm Panoptic will, giving you a wider usable actual field. If you don’t wear glasses, the 19mm Panoptic will give you almost a third more observable sky area than the 18mm Radian with any telescope.

Field of view:
The field of view (FOV) is the amount of observable world one can see at any given moment.
68°
Eye Relief:
Eye relief is the distance from the last surface of the eye lens of an eyepiece to the plane behind the eyepiece where all the light rays of the exit pupil come to a focus and the circular image is formed, sometimes called the “Ramsden Disk.” This is where your eye should be positioned to see the full field of view of the eyepiece. If you must wear glasses because of astigmatism, you’ll usually need at least 15mm of eye relief or longer if you want to see the full field of view with your glasses on.

A note on our eye relief figures: Quite often, our eye relief figures will differ from those of the manufacturer. This is because we measure the “usable” eye relief, while the manufacturers specify their usually-longer (but technically correct) “designed” eye relief.

The eye lens of the eyepiece is normally recessed below the rubber eyeguard or rubber rim of the eyepiece to keep the lens from being scratched during use. An eyepiece might have a “designed” eye relief of 15mm (and the eye relief will truly measure 15mm from the eye lens to where the image forms). However, if the eye lens is recessed 3mm below the eye guard, the Ramsden Disk forms only 12mm above the eyepiece body (the 15mm “designed” eye relief, less the 3mm of eye relief made unusable by having the eye lens recessed into the body of the eyepiece). This “usable” eye relief of 12mm (measured from the rolled-down eyeguard – the closest point you can get your eye to the eye lens – to where the image forms) is the eye relief figure we would measure and list in this website.

Why is it important to list the “usable” eye relief? For those people who don’t wear eyeglasses while observing, a few mm difference between the eye relief they expect from the manufacturer’s literature and the shorter eye relief they actually get in real life doesn’t mean a lot. They can simply move a little closer to the eyepiece to see the full field, and never realize that the eye relief is a little shorter than they expected. However, some people must wear eyeglasses while observing, because of severe astigmatism. These observers can’t move closer to the eyepiece if the eye relief is shorter than expected because their glasses get in the way. For these people, the real life “usable” eye relief is more important than the technically correct but sometimes not fully usable “designed” eye relief. We measure and list the actual usable eye relief so that people in the real world can pick the eyepieces that will work best for them.

10mm
Focal Length:
This is the length of the effective optical path of a telescopeor eyepiece (the distance from the main mirror or lens where the lightis gathered to the point where the prime focus image is formed). Focallength is typically expressed in millimeters.

The longer the focallength, the higher the magnification and the narrower the field of viewwith any given eyepiece. The shorter the focal length, the lower themagnification and the wider the field of view with the same eyepiece.

19mm
Number of optical elements:
6
Barrel Size:
The industry standard diameter, as of 2011, is 1.25" and is the most common.  Other sizes available are .965" and 2".
1.25"
Weight:
The weight of this product.
7 oz
Warranty:
Limited Lifetime
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Overall Product Rating: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics(5.00)   # of Ratings: 4   (Only registered customers can rate)

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Showing comments 1-4 of 4
1. Denis on 5/29/2013, said: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics
I got a 19mm Panoptic about 2 years ago to replace a 20mm Plossl. The Panoptic's 68 deg. field is helpful not only for the larger field of view but because it makes it easier to locate an object which might be at the edge of the field. (Hey, even a go-to scope may not go exactly to the object.)

What I like: crisp & sharp image, wider field than a Plossl. It's also well made, has ribs that are easy to grip with gloves, and is reasonably priced.

What I don't like: Can't think of anything.

Summary: Excellent performance and usability for the price. Yes, an 80 or 110 degree field would be nice, but you can get a couple of quality eyepieces for what one of those would cost.
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2. Jay on 5/22/2013, said: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics
Moderate sized eyepiece with wide view that works well with all the scopes I use:

nice sharp edged scanner for small refractor to sweep milky way

nice low-mid power for larger DSO like double cluster or Orion's sword in 6-inch f/5 reflector or 4-inch f/10 refractor. Crescent moon views are also very nice with 1000mm focal length scope.

mid-power eyepiece for SCT; the 19 Pan exceeds a much-used older 20mm plossl with slightly more magnification and noticeably wider field, and views seem better overall.

Works well at f/5 and f/6; that's something not all the half-dozen "classic" and lower-cost 15-20mm eyepieces I tried out over the years could do.
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3. Charles on 5/18/2013, said: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics
19mm Panoptic (purchased from Astronomics)

The primary “Low Power” EP on my 105mm f/7 triplet refractor. This yields a generous 1.76 degree FOV, and at 39X a decent sky-darkening effect so necessary at my suburban light-polluted site. The sharp edge to edge medium-wide field is great for views of extended objects, with the power sufficient to detect smaller fainter objects such as planetaries. The 1.25” lightweight barrel is convenient when switching out to higher powers. I’ve used many EP’s in a variety of scopes over the years and highly recommend this as a fine “go-to” EP for anyone with a similar setup.
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4. Tom on 4/30/2013, said: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics
This is my favorite medium power eyepiece in my collection. Image is superb edge to edge. Some slight lateral color is noted on bright objects such as the moon, but still very good compared to other eyepieces in this range. Overall, highly recommend the 19mm panoptic to anyone looking in this category EP.
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General Accessories
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52mm x 80mm eyepiece container
by Astronomics
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$3.49 
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LensPen Optics cleaning tool
by Celestron
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$9.95 
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Helpful Formulas
Telescope Eyepiece Formula
To calculate the magnification and approximate actual field of view of this eyepiece on your telescope, enter the focal length of your telescope below and press the "Calculate" button.

Enter your telescope's focal length: mm   



TeleVue - 19mm Panoptic

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TeleVue - 19mm Panoptic
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 AstronomicsAstronomicsAstronomicsAstronomicsAstronomics (Average: 5.00 | Users: 4)  Only registered users can submit ratings - Register Here
Our Product #: PAN19
Manufacturer Product #: EPO-19.0
Price: $270.00
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MSRP: $325.00
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An excellent premium-quality medium power wide field eyepiece that is exceptional with fast focal ratio Dobsonian reflectors . . .





. . . our 34th year