# The \*\*throw ratio\*\* for the \*\*NEBULA Cosmos 4K SE

**URL:** https://makermattdesign.com/t/the-throw-ratio-for-the-nebula-cosmos-4k-se/461
**Category:** General
**Created:** [March 7, 2026, 8:06pm UTC](https://makermattdesign.com/t/the-throw-ratio-for-the-nebula-cosmos-4k-se/461 "2026-03-07T20:06:41Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Matt](https://makermattdesign.com/letter_avatar_proxy/v4/letter/m/a6a055/32.png) [@Matt](https://makermattdesign.com/u/Matt)
#### Post date: [March 7, 2026, 8:06pm UTC](https://makermattdesign.com/t/the-throw-ratio-for-the-nebula-cosmos-4k-se/461/1 "2026-03-07T20:06:41Z")

</div>

The **throw ratio** for the **NEBULA Cosmos 4K SE** is **1.2:1**. This is a fixed value (no zoom), meaning the projector is a standard-throw model.

### What the Throw Ratio Means

Throw ratio = **projection distance** ÷ **image width**  
(both in the same units, e.g., feet or meters)

For this projector:  
**Distance (from lens to screen) = 1.2 × Image Width**

- It’s measured from the projector’s lens (usually near the front) to the screen surface.
- This assumes a 16:9 aspect ratio image (the projector’s native aspect ratio).
- Image height = Image width × (9/16) ≈ Image width × 0.5625
- Diagonal (inches) = √(width² + height²) × 12 (converting ft to inches if needed)

### Step-by-Step Math Examples

1. **Your previous example: 4 ft height × 6 ft width image**

2. **Common reference: 100-inch diagonal (16:9)**

3. **General formula to find distance from desired diagonal (inches, 16:9)**

4. **To find image width from a known distance**

### Quick Reference Table (Calculated from 1.2:1 Throw Ratio, 16:9)

| Diagonal (inches) | Width (ft) | Height (ft) | Throw Distance (ft) | Throw Distance (m) |
| --- | --- | --- | --- | --- |
| 60" | ≈4.36 | ≈2.45 | ≈5.23 | ≈1.59 |
| 80" | ≈5.81 | ≈3.27 | ≈6.97 | ≈2.12 |
| 90" | ≈6.54 | ≈3.68 | ≈7.85 | ≈2.39 |
| 100" | ≈7.26 | ≈4.09 | ≈8.72 | ≈2.66 |
| 120" | ≈8.72 | ≈4.90 | ≈10.46 | ≈3.19 |
| 150" | ≈10.90 | ≈6.13 | ≈13.08 | ≈3.99 |
| 200" | ≈14.53 | ≈8.17 | ≈17.44 | ≈5.31 |

These are precise calculations using the 1.2:1 ratio and match the projector’s official range (60–200" from ~5.2–17.4 ft). Minor variations (± a few inches) can occur due to lens offset (100% here, meaning the bottom of the image aligns with the lens level) or exact measurement from lens vs. front of unit, but 1.2 × width is the core math.

To get any size you want: Measure your available room depth → divide by 1.2 → that’s your max width → scale height for 16:9. Or start with desired width → multiply by 1.2 for needed distance. Super straightforward once you lock in the ratio!