DARK CLEAR SKIES · IMAGING ADAPTERS
Connect M42 and M48.
Add 16.5 mm of spacing.
M42 × 0.75 male to M48 × 0.75 female: a thread-conversion adapter with a defined back-focus contribution.
The DCS M42 Male to M48 Female Adapter – 16.5 mm combines two useful functions in one component: it joins compatible M42 and M48 connections and adds 16.5 mm of specified back-focus spacing to your imaging train.
Match all three details
- Male end: M42 × 0.75, also known as T2.
- Female end: M48 × 0.75.
- Added spacing: 16.5 mm.
Two diameters, one connection
The narrower M42 × 0.75 male end screws into a matching T2 female component. The wider M48 × 0.75 female end accepts a matching M48 male component.
Use this adapter when the equipment you are joining requires those thread diameters, genders and pitches. Check the connections on your actual camera, optical accessory or existing adapter before choosing the part.
Account for the 16.5 mm spacing
When setting the distance behind a reducer, flattener or other corrector, include the camera’s sensor distance and the contributions of filter wheels, guiders and adapters already fitted. This adapter contributes the 16.5 mm back-focus spacing stated on its product label.
The total required distance depends on your exact optical accessory and imaging assembly. Confirm its spacing requirement and allow for the adapter as part of the complete setup.
Compatibility and fitting
Both mating connections must have the correct diameter and 0.75 mm thread pitch. Photographic M42 × 1 equipment uses a different pitch and requires a suitable adapter. Check the available thread clearance when assembling your components.
Specifications
| Brand | Dark Clear Skies |
|---|---|
| Product type | Thread-conversion and spacing adapter |
| External connection | M42 × 0.75 male (T2) |
| Internal connection | M48 × 0.75 female |
| Specified back-focus spacing | 16.5 mm |
| Finish | Black, with Dark Clear Skies engraving |
| SKU | DCS-M42M-M48F-165 |
What’s included
One DCS M42 × 0.75 male to M48 × 0.75 female adapter with 16.5 mm specified back-focus spacing. Other imaging equipment and additional adapters are sold separately.
Need help matching a connection?
Tell us the exact components you want to join and the spacing required for your setup. You can also browse our telescope adapters and extension tubes for other connections and lengths.
