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Thread: Best Binoculars for Beginner?

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    Default Re: Best Binoculars for Beginner?



    Yes cheap binos are like a 50% chance that they will be properly collimated one cant really see it during the day unless one looks at a straight wall to see it in a straight line not ideal but helps and one can adjust one lens cell to help but the proper way is to adjust the prisms , unfortunately they are hard to get to (covered with rubber etc) and on the cheap binos the prisms are glued in! All this is fine if one uses them during the day but for astronomy it essential otherwise you will see 2 stars instead of one
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    Default Re: Best Binoculars for Beginner?

    Quote Originally Posted by thevoyager View Post
    Is Collimation / Collmination something to worry about?

    Either from ordering from supplier or being driven in a van long term? I am travelling you see, and the binos will be in constant transport around SPain.
    Collimating the binos is easy. You need a small (I mean SMALL) flat head screw driver, mine came from a watch repair kit, and a little bit of rubber cement. You have to peel a small section of the rubberized armor away from the prism housing on the right side to expose the collimation screws. While the binos are on Polaris (you need a fairly bright star and Polaris doesn't move so it's convenient to use) alternate looking through each side (blinking left and right) and you will see the star move from spot to spot. Make small adjustments until the star is in the same place when you alternate blinking and you will see that both images merge immediately and they are collimated well for your eyes. Reattach the rubberized armor with a small (again SMALL) dab of rubber cement.

    Coming to you new, they should not need collimating and if I received a new pair that was not collimated, I would return them. If you do not handle them roughly and transport them in a padded case, they will hold collimation a long time if not indefinitely. I have never had to collimate a pair a second time and the only time that I have had to collimate was buying used (I return them if they're new) or for friends. I have to travel with my binoculars, so I have a little padding around them in the vehicle.
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    Default Re: Best Binoculars for Beginner?

    I am still keen on the Celes 20x80.. Other than light quality is there any other difference?
    Weight is the big difference. 20x80 binos are heavy, can't be comfortably hand held, and need to be used with support. You seem very keen on getting the highest magnification possible? This is a common mistake, misconception that beginners make - more magnification is better.

    If observing from dark skies, you want a big exit pupil to match your dilated dark adapted pupil. This comes from lower magnification binos. The pupil of the human eye dilates to 7mm in a young person, 5-6mm in an older person. The exit pupil of the binoculars can be calculated by dividing the aperture by the magnification.
    20x80 . 80÷20=4mm
    20x50 . 50÷20=2.5mm

    I have the Orion 9x63.(7mm exit pupil). For me, at around 1kg, they are at the weight limit of what I can comfortably handhold which is the main way I use them.

    I also have a pair of very sharp 7x35's that are very light and can hang around my next effortlessly.

    If you have access to dark skies, try to maximise the exit pupil whatever you chose.

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    Default Re: Best Binoculars for Beginner?

    For beginner binoculars I would recommend Bushnell 10x50 Legacy WP and a zero gravity chair or beach chair that reclines back the whole way. I have smaller and bigger binoculars but these are my go to and favorites. They are the binoculars which all my other binoculars orbit around. I would also recommend a harness over a neck strap.

 

 
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