HAMMONDS  is proud to offer for sale this 15mm Super Plössl Eyepiece Multi Coated

This is the one piece of equipment that will greatly improve you viewing pleasure.

Extra eyepieces will let your increase the range of objects that you will be able to see through your telescope. This eyepieces is a Plössl design.  You will be getting one of the best optical designs for viewing comfortably.    It is 1.25 inches in diameter.  There are 4 elements coated on all surfaces which will give you superior light transmission.  .

To determine the power of this eyepiece in your scope divided the eyepiece size into the focal length of your telescope.

Focal length of scope \ Eyepiece size = power

750 f \ 15mm= 50 power

1000 f \ 15mm = 66power

Be sure to not over power your telescope which will give you poor viewing.  To determine the highest usable power of your scope take the diameter in inches of the primary lens or mirror and times it by 50. 

Scope size X 50 = highest usable power

3 (60) inch x 50 = 150 highest usable power

4.5 (114mm) inch  x 50 = 250 highest usable power

For viewing deep space objects, this is the highest power you want to use.  If you are viewing on land you can increase the power 20% with no problem.

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