Angle Binoculars
 |
 JASON WIDE ANGLE BINOCULARS MODEL 1140 WITHOUT CARRY CASE $29.99 Time Remaining: 5d 14h 44m Buy It Now for only: $29.99 |
 Nice Wards TJK Japan 7X35 Super Wide Angle 67 7073 Binoculars w Soft Case $14.99 Time Remaining: 2d 10m |
 Simmons REDLINE 1103 7x35 Wide Angle Binoculars NEW with Box and Case $30.00 Time Remaining: 27d 22h 59m Buy It Now for only: $30.00 |
 BAUSCH LOMB TOP OF LINE 10X42 WIDE ANGLE BIRDING HUNTING BINOCULARS PRISTINE $295.00 Time Remaining: 28d 6h 21m Buy It Now for only: $295.00 |
 Bushnell Perma Focus 10x50 Wide Angle Binocular $53.99 Time Remaining: 16d 22h 57m Buy It Now for only: $53.99 |
 Bushnell 133450 Falcon 10x50 Wide Angle Binoculars Black $21.99 Time Remaining: 21d 13h 32m Buy It Now for only: $21.99 |
 Bushnell 10 x 50 Wide Angle InstaVision Binoculars w Carry Case Shoulder Strap $19.99 Time Remaining: 20h 6m |
 Bushnell 10 x 50 Wide Angle Binoculars Soft Leather Case Free Shipping $20.00 Time Remaining: 18d 8m Buy It Now for only: $20.00 |
 MANON 7X35 EXTRA WIDE ANGLE BINOCULAR $26.95 Time Remaining: 10d 13h 15m Buy It Now for only: $26.95 |
 Wards 7x35 Super Wide Angle Binoculars 11 578 field $69.99 Time Remaining: 23d 22h 4m Buy It Now for only: $69.99 |
 Bushnell 10x42 Powerview Binocular Wide Angle 141042 NEW Authorized Dealers $69.95 Time Remaining: 2h 7m Buy It Now for only: $69.95 |
 BUSHNELL 12X50 WIDE ANGLE BINOCULARS USED $9.99 Time Remaining: 3d 23h 12m |
 Binoculars 10x50 Jason Model 1196 Wide Angle Self Fixed Focus Field 7 Scope Blk $19.94 Time Remaining: 24d 21h 46m Buy It Now for only: $19.94 |
 CLEARVU BY MARATHON WATERPROOF 7X50 LONG EYE RELIEF WIDE ANGLE BINOCULAR $99.99 Time Remaining: 15d 19h 37m Buy It Now for only: $99.99 |
 Bushnell Falcon 10x50 Wide Angle Binoculars Black $43.42 Time Remaining: 29d 4h 11m Buy It Now for only: $43.42 |
 SIMMONS Outdoor ProSport WIDE ANGLE 10x50 BINOCULARS with CARRY CASE $39.20 Time Remaining: 25d 2h 54m Buy It Now for only: $39.20 |
 Bushnell Powerview 12x50 Wide Angle Binocular $68.58 Time Remaining: 29d 19h 29m Buy It Now for only: $68.58 |
 JASON 10X50 WIDE ANGLE PERMA FOCUS 2000 BINOCULARS LIGHTLY USED $19.99 (1 Bid) Time Remaining: 1d 23h 50m |
 K MART FOCAL 7 X 35 WIDE ANGLE FIELD BINOCULARS $19.99 Time Remaining: 20d 10m Buy It Now for only: $19.99 |
 BUSHNELL POWERVIEW WIDE ANGLE 10X50 BINOCULARS 13 1056 $34.99 Time Remaining: 5d 21h 55m Buy It Now for only: $34.99 |
 Bushnell Perma Focus 12x50 Wide Angle Binocular $83.54 Time Remaining: 29d 19h 29m Buy It Now for only: $83.54 |
 TASCO ESSENTIALS 10X50 WIDE ANGLE BINOCULARS NEW $24.28 Time Remaining: 9d 19h 12m Buy It Now for only: $24.28 |
 Simmons Brand Hunting Binoculars Wide Angle 8 x 40 Realtree Advantage Camo $13.99 Time Remaining: 3d 1h 40m |
 Falcon 10x50 Wide Angle Binoculars Black New $46.28 Time Remaining: 16d 23m Buy It Now for only: $46.28 |
 Bushnell Perma Focus 10x50 Wide Angle Binocular $77.33 Time Remaining: 29d 4h 19m Buy It Now for only: $77.33 |
 NEW VANGUARD 105X45 ENDEAVOR ED ERGONOMIC WIDE ANGLE BINOCULAR ED1045 $399.99 Time Remaining: 6d 21h 24m Buy It Now for only: $399.99 |
 Military Style Camoflage Wide Angle Binoculars $61.04 Time Remaining: 17d 11h 25m Buy It Now for only: $61.04 |
 Simmons Brand Hunting Binoculars Wide Angle 8 x 40 Realtree Advantage Camo $13.99 Time Remaining: 3d 1h 40m |
 Bushnell Perma Focus 10x50 Wide Angle Binocular $53.99 Time Remaining: 7d 9h 14m Buy It Now for only: $53.99 |
 Used Vintage Sears Binoculars Model No 473 25740 Wide Angle at 17x $24.99 Time Remaining: 10d 3h 3m Buy It Now for only: $24.99 |
 Alpen 10x50 Wide Angle Binoculars $59.00 Time Remaining: 11h 53m Buy It Now for only: $59.00 |
 New Tasco Pair of Binoculars 7 x 35 w Wide Angle Model zip Case $39.50 Time Remaining: 2d 13h 44m Buy It Now for only: $39.50 |
 Bushnell Wide Angle Binoculars Sports Birding Hunting Stars 10X Fast Ship NEW $59.95 Time Remaining: 4d 7m Buy It Now for only: $59.95 |
 Jason Mecury 7 x 35 Extra Wide Angle Binocular $9.00 Time Remaining: 1d 18h 42m Buy It Now for only: $11.00 |
 BUSHNELL 131056 10x50 POWERVIEW WIDE ANGLE BINOCULARS $64.99 Time Remaining: 28d 5h 36m Buy It Now for only: $64.99 |
 Bushnell Sportview Binoculars 7 x 35 Wide Angle With Case $49.99 Time Remaining: 14d 21h 24m Buy It Now for only: $49.99 |
 LEITZ 6X24 AMPLIVID WIDE ANGLE BINOCULARS MINT COND $875.00 Time Remaining: 9d 16h 15m Buy It Now for only: $875.00 |
 Simmons 7x35mm Red Line Wide Angle Binoculars NIB $49.95 Time Remaining: 16d 21h 18m Buy It Now for only: $49.95 |
 Tasco World Class Wide Angle Binoculars 7x35mm with Zip Focus $20.00 Time Remaining: 1d 17h 19m |
 Brunton Echo 8x32 Wide Angle Waterproof Binoculars for Hunting or Sporting Event $210.00 Time Remaining: 1d 19h 8m Buy It Now for only: $210.00 |
 BUSHNELL 175010 10x50 PERMAFOCUS WIDE ANGLE BINOCULARS $74.99 Time Remaining: 28d 5h 36m Buy It Now for only: $74.99 |
 BUSHNELL 175012 12x50 PERMAFOCUS WIDE ANGLE BINOCULARS $79.99 Time Remaining: 28d 5h 36m Buy It Now for only: $79.99 |
 Bushnell 131056 Powerview 10x50 Wide Angle Binoculars $54.85 Time Remaining: 7d 1h 18m Buy It Now for only: $54.85 |
 Bushnell Powerview Binoculars 10x50 Wide Angle $66.72 Time Remaining: 9d 22h 39m Buy It Now for only: $66.72 |
 TASCO 8 X 32 Wide Angle ROOF PRISM binoculars $25.00 Time Remaining: 3d 10m Buy It Now for only: $39.00 |
 Bushnell Powerview 10x50 Wide Angle Porro Binoculars $77.99 Time Remaining: 10d 16h 58m Buy It Now for only: $77.99 |
 Alpen Magnaview Binocular 214 8x42 Wide Angle Rubber Covered $58.48 Time Remaining: 25d 23h 35m Buy It Now for only: $58.48 |
 Bushnell Powerview 10x50 Wide Angle Binocular Non Slip Grip high quality optics $59.40 Time Remaining: 29d 11h 58m Buy It Now for only: $59.40 |
 Bushnell PermaFocus Binocular 7X35 Wide Angle $55.88 Time Remaining: 25d 1h 22m Buy It Now for only: $55.88 |
 Galileo Model C 840WA Coated Optics 8x40 Wide Angle Binoculars $7.99 Time Remaining: 3d 1h 33m |
 Alpen 111 8x40 Wide Angle Binocular Box $40.30 Time Remaining: 26d 1h 5m Buy It Now for only: $40.30 |
 Bushnell PermaFocus 7x35 RP FF Binoculars Wide Angle $71.58 Time Remaining: 26d 20h 11m Buy It Now for only: $71.58 |
 PowerView 10x50 Wide Angle Binocular New $66.67 Time Remaining: 16d 23m Buy It Now for only: $66.67 |
 Bushnell 7x35 Focus Free Wide Angle Binoculars 173507 $71.76 Time Remaining: 14d 4h 45m Buy It Now for only: $71.76 |
 Rare Leitz Wetzlar 6x24 Amplivid Binoculars 6 x 24 Wide Field Angle in Case $699.00 Time Remaining: 1d 18h 10m Buy It Now for only: $799.00 |
 Bushnell Powerview 12x50 Wide Angle Binocular $62.88 Time Remaining: 25d 1h 22m Buy It Now for only: $62.88 |
 OPTRONICS CLEARPOINT 10x50 WIDE ANGLE BINOCULAR 5743 $39.99 Time Remaining: 5d 19h 49m Buy It Now for only: $39.99 |
 Alpen Magnaview Binocular 217 10x52 Wide Angle Rubber Covered $58.48 Time Remaining: 17d 1h 30m Buy It Now for only: $58.48 |
 Bushnell PowerView 10x50 Wide Angle Binocular $63.99 Time Remaining: 15d Buy It Now for only: $63.99 |
 Alpen PRO 10x25 wide angle compact Binocular NEW $61.99 Time Remaining: 1d 24m Buy It Now for only: $61.99 |
 BUSHNELL COMPACT BINOCULARS 8 X 20 WIDE ANGLE with CASE $9.99 Time Remaining: 2d 17h 11m |
 Bushnell Perma Focus 12x50 Wide Angle Binocular NEW $71.99 Time Remaining: 1d 16h 21m Buy It Now for only: $71.99 |
 BRUNTON Echo Wide Angle 8x32 Binoculars $330.00 Time Remaining: 22d 2h 5m Buy It Now for only: $330.00 |
 Bushnell Powerview 10x50 Wide Angle Binoculars 131056 $72.80 Time Remaining: 14d 4h 45m Buy It Now for only: $72.80 |
 Bushnell 16X50 Powerview Wide Angle Binoculars + Accessory Package Bushnell AB $72.99 Time Remaining: 1d 16h 32m Buy It Now for only: $72.99 |
 Swift Aerolite 7 x 35 Wide Angle Model 735 Binoculars $19.99 Time Remaining: 4d 13h 56m |
 Bushnell Perma Focus 10x50 Wide Angle Binocular NEW $65.99 Time Remaining: 4d 17h 18m Buy It Now for only: $65.99 |
 NEW Simmons 7x35mm Red Line Wide Angle Binoculars SEALED $39.99 Time Remaining: 6d 18h 4m Buy It Now for only: $39.99 |
 Tasco Binocular 7x 35mm Zip Focus Porro Prism Wide Angle Black 2001BRZ $42.95 Time Remaining: 29d 18h Buy It Now for only: $42.95 |
 Bushnell Powerview 12x50 Wide Angle Binoculars 131250 $76.96 Time Remaining: 26d 41m Buy It Now for only: $76.96 |
 Bushnell Powerview 12x50 Wide Angle Porro Binoculars $80.69 Time Remaining: 27d 12h 45m Buy It Now for only: $80.69 |
 Vintage Sears Extra Wide Angle Binoculars Case Information Manual $4.99 Time Remaining: 4d 15h |
 Bushnell Perma Focus 12x50 Wide Angle Binocular B00005AXIW $90.07 Time Remaining: 5d 13h 14m Buy It Now for only: $90.07 |
 Bushnell PermaFocus 12x50 RP FF Binoculars Wide Angle $89.99 Time Remaining: 14d 12h 45m Buy It Now for only: $89.99 |
 Bushnell Powerview 10x50 Wide Angle Binoculars Excellent 13 1056 PK $35.00 Time Remaining: 11d 18h 53m Buy It Now for only: $35.00 |
 Mystery 8x40 Wide Angle Binoculars Telescope Sand Color for Birding Hunting $19.00 Time Remaining: 17d 12h 23m Buy It Now for only: $19.00 |
 Bushnell Binoculars 7x35 Wide Angle Sportview Fully Coated Optics $9.95 Time Remaining: 5d 31m Buy It Now for only: $14.95 |
 Bushnell PowerView 10x50 Wide Angle Binocular $49.95 Time Remaining: 17d 1h 22m Buy It Now for only: $49.95 |
 Bushnell PermaFocus 10x50 RP FF Binoculars Wide Angle $83.66 Time Remaining: 13d 3h 3m Buy It Now for only: $83.66 |
 Bushnell NatureView 13 2000 Binocular 8x42WA Wide angle excellent condition $110.62 Time Remaining: 9d 22h 45m Buy It Now for only: $110.62 |
 Bushnell PowerView 10x50 Wide Angle Binocular $49.95 Time Remaining: 16d 22h 51m Buy It Now for only: $49.95 |
 Magnacraft 12x60 Wide Angle Binoculars $59.00 Time Remaining: 5d 3h 36m |
 10X50 Wide Angle Binoculars $55.00 Time Remaining: 28d 15h 11m Buy It Now for only: $55.00 |
 Magnacraft 12x60 Wide Angle Binoculars $59.00 Time Remaining: 18d 1h 17m Buy It Now for only: $59.00 |
 Bushnell Powerview Binoculars 10x50mm Wide Angle $50.46 Time Remaining: 12d 18h 25m Buy It Now for only: $50.46 |
 Bushnell Powerview Binocular 7x35 Wide Angle Instafocus Porro Prism 137307 $62.95 Time Remaining: 1d 19h 53m Buy It Now for only: $62.95 |
 131056 PowerView 10 x 50 Wide Angle Binocular $80.94 Time Remaining: 19d 23h 13m Buy It Now for only: $80.94 |
 Binoculars 10x50 Jason model 1196 wide angle self focus field 7 $5.00 Time Remaining: 4d 22h 32m Buy It Now for only: $25.00 |
 Docter Optic 40x80mm Super Wide Angle Binocular with hard case and Jim White mou $4,000.00 Time Remaining: 12d 13h 45m Buy It Now for only: $4,000.00 |
 WIDE ANGLE 8x30 lightweight waterproof scope binoculars + superb BAK4 poroprisms $94.80 Time Remaining: 3d 9h 34m Buy It Now for only: $94.80 |
 Bushnell Powerview Binoculars 12x50mm Wide Angle $53.83 Time Remaining: 12d 18h 55m Buy It Now for only: $53.83 |
 HAKING Fully Coated 7 X 35mm Wide Angle Binoculars $30.00 Time Remaining: 12d 47m Buy It Now for only: $30.00 |
 Tasco Infocus 7x35 Wide Angle Binoculars $6.99 Time Remaining: 3d 18h 24m |
 10266 NEW CAMO WIDE ANGLE LENS 10 x 50MM BINOCULARS GREAT FOR HUNTING HIKING $44.95 Time Remaining: 28d 20h 40m Buy It Now for only: $44.95 |
 10271 CAMOUFLAGE 10X50MM WIDE ANGLE BINOCULARS W RIBBED COVERING CARRYING CASE $49.99 Time Remaining: 13d 3h 59m Buy It Now for only: $49.99 |
 Tasco Essentials 10x50 Wide Angle WA Zip Focus Binoculars Tasco 2023BRZ $29.99 Time Remaining: 24d 22h 33m Buy It Now for only: $29.99 |
 KONUS Emporer Binoculars 10x42mm Wide Angle Green 2336 $159.99 Time Remaining: 11d 4h 53m Buy It Now for only: $159.99 |
Angle Binoculars
Nikon Monarch Binoculars - Birding Watching Takes The Right Equipment
Bird watching takes the right equipment to make the difference between a fun, relaxing hobby and an exercise in
frustration. Birding binoculars make all the difference and allow you to not only get out in nature but to
birdwatch up close and personal.
The usual choice for most birdwatchers is 7, 8 or 10x magnification in overall use. You don't want to have too much
power because it will give you a smaller field of view, as well as less light entry and poor image quality. The
binoculars will also be heavier and harder to manage and thwarting shaking will be more of a challenge.
Lens coatings let more light through which results in a high quality image with the best coating being a fully
multicoated lens. A water repellent coating will also enhance your birding binoculars, which will help with light
rain and fog conditions.
Birding binoculars is one of the essential pieces of equipment for successful bird watching because they will not
only bring your images to life, but allow you to catch a load of sightings that would otherwise be restricted with
the naked eye.
It can be a good idea to go for the more expensive binoculars, which will give you a higher quality image. You
don't have to go for the most expensive, however, as the best birding binoculars are usually in the mid-price
range.
Basically, binoculars are made from two telescopes connected together. The lens closest to the object is called the
objective lens, and the lens closest to your eye is the eyepiece. The object becomes bigger, but upside down and
backwards. In order to straighten out the object, a prism is needed. A prism is like a mirror but it doesn't have a
reflective back, it is just a piece of glass that acts like a mirror when light hits it at a certain angle.
Porro Prism binoculars were very popular until the 1950-1960's when roof prism binoculars were made available. Roof
prism binoculars automatically shorten the distance between the lenses making roof prism binoculars lighter and
smaller. Roof prism binoculars require precise handling of equipment because they require a more complex light path
to work. The Porro prism binoculars are a lot cheaper and easier to use, but roof prism binoculars are considered
the industry standard.
A wide range of binoculars can be used for nature study and bird watching. However an 8x 21 maybe all right for
watching a blackbird in your garden on a bright, sunny day, but they would not be the best binoculars for birding,
if you were in a shaded woodland area. Here you would need birding binoculars with a bigger objective lens, to
allow in more light, and therefore enhance your view.
Eyecups are an important consideration for the bird watching enthusiast. Often cheaper binoculars have folding
eyecups. These can be difficult to move, leading to the bird flying away, before you get them in place. Look for
birding binoculars with eyecup that twist up, or slide in and out.
About the Author
<a href='http://nikonmonarchbinocularsz.com/' title=''>Nikon Monarch Binoculars</a> are the ultimate binocular for the sports enthusiasts. For complete details and the best prices Click Here ==>: http://nikonmonarchbinocularsz.com/
Can an artificial satellite reflect "moonlight" and be seen by an observer on earth?
Just curious, if the angles are ever right, and the satellites have enough reflectivity, can they be seen in our night sky by reflecting moonlight (which is already reflected sunlight), or must the satellite be illuminated only directly by the sun to be visible to an observer on earth.
I'll accept naked eye answers as well as binocular/telescope answers, if you do indeed know.
Let me see if I can get technical about it. My first guess is that the Moon does not provide enough reflected light to be visible by reflecting on an artificial satellite.
First point of order: Moon and Sun are about the same apparent size, and light from them reaches the satellite in roughly parallel rays, meaning the reflection takes place roughly the same way and only the brightness of either Sun or Moon are important comparatively. Agreed?
2) By now, you already know what apparent magnitude is: http://en.wikipedia.org/wiki/Apparent_magnitude . My argument would then follow into the statement that magnitude is a logarithmic scale, meaning one point less in magnitude means 2.512 times more brightness. Wiki already did the math for me, and in the table lists Sun's apparent magnitude - 26.73; Moon's app magn - 12.6; Sun's brighter than Moon 449 000 times.
QED) Satellite would need to be 449 000 times larger to reflect as much moonlight, as with its regular size reflects sunlight.
Let's see if an expert from this section finds any grounds to fine tune this rough guess of mine. Actually, taking a bold dash into the unknown, I'd say that if the satellite looks like a magnitude -1 star under sunlight, it should look like a magnitude +12 under moonlight. Remember, with the naked eye we only see up to +6, and +9.5 with binoculars.
Is this right? Any mathematician in the house?...
*********************************
For a complete review of the answer I would like to state how I estimated the magnitudes for a reflecting satellite.
A detailed calculation would include angles, albedo, shape/reflecting area, and brightness of the light source. Assuming optimal viewing conditions, and all things being equal, most practical factors appear as multiplying factors, thus, as I said under optimal conditions reflection of sunshine would be 449 000 times brighter than reflection of moonshine. Some of the answerers discussed in detail the probability of observing the reflecting satellite in a practical way. I am interesting in establishing an upper bound for brightness in the best case scenario.
Now, if in this best case 449 000 times less light is reflected from the Moon, the magnitude difference between Sun reflection and Moon reflection would be roughly the difference in apparent magnitude of the sources, or 13, maybe 14 points. Notice that factors like albedo of reflecting surface area would multiply a detailed calculation and affect the reflected light intensity in the same way. Additionally, the brightness of the source also multiplies which in a logarithmic scale corresponds to a difference equal to the one between Sun and Moon.
Finally, I had my share of watching cruising artificial satellites back in the day, and I agree that a few hours after sunset, what we see are seemingly average stars except that they move in a straight line. These correspond to reasonably high orbits, because in the satellite you'd still be in line of sight with the Sun. Their brightness, yes, could correspond to a star with a +2 or +3, or even higher, apparent magnitude. However, I once had the opportunity of watching a satellite in a North to South run, at dusk, with the Sun still partially in the horizon. It was very bright, perhaps brighter than Sirius (this was way before the ISS). Conservatively lets assign it a brightness in terms of apparent magnitude of -1. Then, all things being equal, the same satellite making a run when a full Moon has just risen in the horizon, would look like a star of apparent magnitude of say +12, as my argument goes.
The +12 magnitude I suggested is then a best case scenario and practical observation would certainly put its brightness deeper down in the magnitude scale. No hope of ever watching one with binoculars.
TOP 10 Binoculars