<p>My telescope is blurry and I am not sure why I used a 254mm primary mirror f/5 with a secondary mirror at 62.5 and I also used a 32mm eye piece I know if I stand back 20cm from eyepiece I see a clear image but any closer and it gets blurry can someone tell me what I am missing</p>

CC BY-SA 3.0
2017-06-04T21:05:46.687Z
If you can't get any answers here, you might try locating an astronomy club in your location and taking it along there. It might be easier to for someone who can get hands on.
James K
CC BY-SA 3.0
2017-06-05T14:03:32.347Z
As a mimimum, please post the source of your components,  how you set the distance between primary and secondary, and what assembly manual (if any) you used.  As it stands we don't even know whether you are using spherical or parabolic mirrors!
Carl Witthoft
CC BY-SA 3.0
2017-06-05T14:38:41.223Z
I actually figured it out now thank you for your comments Had a Little Help from one of my teachers so thank you again it was just that I needed to find tune where the focal point would be
Eric Jung
CC BY-SA 3.0
2017-06-05T17:57:14.563Z
Perhaps you could answer your own question then, describe how to find tune where the focal point is.
James K
<newtonian-telescope>
My homemade telescope
Eric Jung
# My homemade telescope

(Asked by: username_0 on 2017-06-04)

My telescope is blurry and I am not sure why I used a 254mm primary mirror f/5 with a secondary mirror at 62.5 and I also used a 32mm eye piece I know if I stand back 20cm from eyepiece I see a clear image but any closer and it gets blurry can someone tell me what I am missing

**Tags:** newtonian-telescope
> **Comments:**
> **username_1**: If you can't get any answers here, you might try locating an astronomy club in your location and taking it along there. It might be easier to for someone who can get hands on.  
> **username_2**: As a mimimum, please post the source of your components,  how you set the distance between primary and secondary, and what assembly manual (if any) you used.  As it stands we don't even know whether you are using spherical or parabolic mirrors!  
> **username_0**: I actually figured it out now thank you for your comments Had a Little Help from one of my teachers so thank you again it was just that I needed to find tune where the focal point would be  
> **username_1**: Perhaps you could answer your own question then, describe how to find tune where the focal point is.  

---

## 0 answers

