<p>Thought I would revisit this and answer my own question...no lens is needed at all :)</p>

<p>The telescope itself is the lens, so once that finally made sense to me I then took the lens off the Raspberry Pi camera and I can now use the camera with the telescope</p>

<p><a href="https://i.sstatic.net/iMo5u.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/iMo5u.jpg" alt="enter image description here"></a></p>

CC BY-SA 4.0
2019-09-04T06:23:20.197Z
Congratulations!  Technically you could keep the lens on, and refocus it to a plane close in front, and then place the camera behind the telescope so that the front focal plane of the lens coincided with the focal plane of the telescope. But I can't think of any reason why that would be a good thing to do. Your solution is definitely the simplest.
uhoh
CC BY-SA 4.0
2019-09-04T00:11:33.567Z
2019-09-04T00:11:33.567Z
nmajin
<p>I am building myself a camera that attaches to the back of my Celestron NexStar 4 SE telescope and I am not sure what type of lens to choose to replace the stock lens on the Raspberry Pi camera. I bought <a href="http://www.m12lenses.com/CS-Mount-Lens-Holder-Metal-p/pt-lh013csm.htm" rel="nofollow">this</a> CS Mount and by mistake bought M12 lenses thinking it was a mount for M12 lenses but now I know CS mounts require bigger lenses than M12. So should I instead get a M12 mount and use M12 lenses or should I buy a CS lens and what kind if I am looking to do a high quality video/live stream?</p>

<p>Raspberry Pi Camera: <a href="https://www.adafruit.com/products/3099" rel="nofollow">https://www.adafruit.com/products/3099</a></p>

<photography>
What lens should I use for my Raspberry Pi?
nmajin
# What lens should I use for my Raspberry Pi?

(Asked by: username_0 on 2016-10-19)

I am building myself a camera that attaches to the back of my Celestron NexStar 4 SE telescope and I am not sure what type of lens to choose to replace the stock lens on the Raspberry Pi camera. I bought [this](http://www.m12lenses.com/CS-Mount-Lens-Holder-Metal-p/pt-lh013csm.htm) CS Mount and by mistake bought M12 lenses thinking it was a mount for M12 lenses but now I know CS mounts require bigger lenses than M12. So should I instead get a M12 mount and use M12 lenses or should I buy a CS lens and what kind if I am looking to do a high quality video/live stream?

Raspberry Pi Camera: <https://www.adafruit.com/products/3099>

**Tags:** photography


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## 1 answers

### Answer by username_0 on 2019-09-04. Score: 3

Thought I would revisit this and answer my own question...no lens is needed at all :)

The telescope itself is the lens, so once that finally made sense to me I then took the lens off the Raspberry Pi camera and I can now use the camera with the telescope

[![enter image description here](https://i.sstatic.net/iMo5u.jpg)](https://i.sstatic.net/iMo5u.jpg)

> **Comments:**
> **username_1**: Congratulations!  Technically you could keep the lens on, and refocus it to a plane close in front, and then place the camera behind the telescope so that the front focal plane of the lens coincided with the focal plane of the telescope. But I can't think of any reason why that would be a good thing to do. Your solution is definitely the simplest.  

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