Telescope magnification...HELP?

Question

i have a 5 inch meade and the eyepiece
sizes i have are 26mm , 25mm ,10mm 9.7mm,7.5mm

Can anyone tell me how many times each size is magnifying an object for me?
I want to write it down in my observing journal .

THANKS in advance ;)

here is the focal length info on my scope ..

it says D=13mm
F=1000mm
f/7.7

Answer 1

Your telescope has a front diameter of approximately 130mm
and a focal length of 1000mm
To calculate the magnification you have to divide the focal lengt of the telescope (10000mm) by the focal length of the eyepiece. So you have the following magnifications:

26mm --> 38
25mm --> 40
10mm --> 100
9.7mm -->103
7.5mm --> 133

Answer 2

The magnification each eyepiece will give in your telescope can be calculated by

magnification = (telescope focal length)/(eyepiece focal length)

So for example, the 25mm eyepiece give you...

(1000/25) = 40x magnification

The 7.5mm eyepiece gives you...

(1000/7.5) = 133x magnification

If you were to use a 2x barlow, simply double the telescope focal length, or half the eyepiece focal length in the equation. In either case, you'll see it increases the magnification.

The higher magnification you use, the more difficult it will be to get a good image. Your telescope has a theoretical magnification limit of 250x but in reality, the closer you get to this the more degraded the image will become.

To get the best images under high magnification the atmosphere must be calm and free of haze and you must let the telescope sit out for at least an hour to reach thermal equilibrium with the environment.

Answer 3

Magnification = (telescope focal length)/(eyepiece focal length), so a 26mm eyepiece gives you 1000/26 = 38x.
For the rest of them:
25mm -> 40x
10mm -> 100x
9.7mm -> 103x
7.5mm -> 133x

Answer 4

F=1000mm divided by each of those numbers is the magnification.

You have two eyepieces that are too close together, 9.7mm is almost identical to 10 and 25 is almost the same as 26.

Can I have them?