<p>It's 70mm aperture, so the maximum useful magnification will be 165x.</p>
<p>If you have a 4mm eyepiece, you will have 75x magnification, and at that, you can expect to see rings of Saturn, moons of Jupiter in good conditions. Venus will show phases. I can't say much about Mercury.</p>
<p>You can see many surface features of the Moon. The view will be particularly good at 150x. You will have to use a 2x Barlow for that. Remember, the view will be good in good &quot;seeing&quot;.</p>
<p>If you are in dark sky away from light pollution, you can expect to see many globular clusters and nebulas particularly, the Orion Nebula.</p>

CC BY-SA 4.0
2020-07-12T17:01:24.800Z
2020-07-12T17:01:24.800Z
Mathematicie
<p>What would I be able to see with 70mm aperture telescope with 300mm focal length with maximum magnification of 150 x?</p>

CC BY-SA 4.0
2020-07-12T14:50:45.530Z
It really depends on 1) if it's an excellent or lousy telescope, 2) if it has an excellent or lousy mount, 3) if the seeing conditions and sky brightness in your area is excellent or lousy, 4) your degree of patience and willingness to learn how to use it. btw 70 mm, f=300 mm means it's f/4.3 which is pretty short. You would also need a 2 mm focal length eyepiece to get 150x, or a 4 mm eyepiece and 2x Barlow so something doesn't sound right about those numbers. If it's urgent you need to buy it, better not.
uhoh
<refractor-telescope>
What would I see with a telescope of 70mm aperture , 300mm focal length and maximum magnification of 150x
Hardik
# What would I see with a telescope of 70mm aperture , 300mm focal length and maximum magnification of 150x

(Asked by: username_0 on 2020-07-12)

What would I be able to see with 70mm aperture telescope with 300mm focal length with maximum magnification of 150 x?

**Tags:** refractor-telescope
> **Comments:**
> **username_1**: It really depends on 1) if it's an excellent or lousy telescope, 2) if it has an excellent or lousy mount, 3) if the seeing conditions and sky brightness in your area is excellent or lousy, 4) your degree of patience and willingness to learn how to use it. btw 70 mm, f=300 mm means it's f/4.3 which is pretty short. You would also need a 2 mm focal length eyepiece to get 150x, or a 4 mm eyepiece and 2x Barlow so something doesn't sound right about those numbers. If it's urgent you need to buy it, better not.  

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## 1 answers

### Answer by username_2 on 2020-07-12. Score: 1

It's 70mm aperture, so the maximum useful magnification will be 165x.

If you have a 4mm eyepiece, you will have 75x magnification, and at that, you can expect to see rings of Saturn, moons of Jupiter in good conditions. Venus will show phases. I can't say much about Mercury.

You can see many surface features of the Moon. The view will be particularly good at 150x. You will have to use a 2x Barlow for that. Remember, the view will be good in good "seeing".

If you are in dark sky away from light pollution, you can expect to see many globular clusters and nebulas particularly, the Orion Nebula.


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