Question 1

compare th field of view of th 12x60 to th 15x70 ?

Accepted Answer

Angular field of view of 12 x 60s:  5.3 degrees.  Same spec for 15 x 70s: 4.4 degrees.  See specifications of products at www.celestron.com.

Question 2

Can these be hand held for short periods of time (15-20 minutes) for casual astronomy. Is this a good canidate for ues in conjuction with a telescope.

Accepted Answer

Short answer: yes

More nuanced answer: sorta

For an adult, 12x60 is just about the largest, most powerful glasses that will be practical to handhold. 12x magnification is on the high side for handheld astronomy; they will require frequent rest breaks. The higher the magnification, the shakier the image will be and of course the heavier the shakier. The view however, should be pretty stunning.

For the average beginner, 10x50 is probably a more satisfying choice, simply because they'll be much easier to use. Just about the all around best, however, is 7x50; also ideal for children. They're economical, ubquitous and the 7x magnification is very forgiving with a stunningly wide angle, bright and rich view. 7x50 will show Jupiter as a small, bright, featureless disc with a line of dim yellow 'stars' across it. Saturn will not show the rings, but will appear as distinctly different from a star and while very small, may appear vaguely football shaped. Any combination of 7 - 12x and 42 - 63mm is a great companion to a small telescope, for scanning and planning, or just casual stargazing.

Question 3

are these to heavy to watch a football game

Accepted Answer

They're pretty heavy to be holding up to your eyes for long periods of time.  I bought mine for stargazing and added the tripod adapter.  I'd go with something lighter for use at a three hour long football game.

Question 4

Does this 12x60 have acessable screws to adjust the collimation, if necessary?

Accepted Answer

Yes. The best place on the net that I am aware of that shows how to collimate the celestron skymaster series of binoculars is oddly enough the Oberwerk binocular website. The Oberwerk Light Series is basically the same binocular as the Celestron Skymasters. The Oberwerk might have slightly better coatings on the optics for about twice the price. Just go to Oberwerk.com/support/collimate for everything you need to know.

ASIN	B0007UQNTK
Age Range Description	Adult
Apparent Angle of View	5.3 Degrees
Best Sellers Rank	#57 in Camera & Photo Products ( See Top 100 in Camera & Photo Products ) #42 in Binoculars
Brand	Celestron
Built-In Media	Carrying case, Instruction manual, Lens cloth, Neck strap, Objective lens cap, Rainguard
Coating	Multi-Coated
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (980)
Enclosure Material	Rubber
Exit-Pupil Diameter	5 Millimeters
Eye Relief	18.0
Features	Water Resistant
Focus Description	Manual Focus
Focus Type	Center Focus
Global Trade Identification Number	00050234710077
Item Dimensions L x W	8.25"L x 2.8"W
Item Dimensions L x W x H	8.25"L x 8.1"W x 2.8"H
Item Weight	1111 Grams
Low Light Technology	Yes
Magnification Maximum	12 x
Manufacturer	Celestron
Manufacturer Part Number	71007-CGL
Model Name	SkyMaster 12x60mm Porro Binoculars
Model Number	71007
Mount Type	Tripod Mount
Objective Lens Diameter	60.0
Prism Type	Porro Prism
Relative Brightness	25.0
Size Map	Giant
Specific Uses	Astronomical
UPC	050234710077
Unit Count	1.0 Count
Warranty Description	Limited Lifetime Warranty
Water Resistance Level	Water Resistant
Zoom Ratio	12 multiplier_x

SkyMaster 12x60 Binoculars – Wide-Field Long-Range and Astronomy Binoculars – Includes Carrying Case – Multi-Coated Optics

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