Baader Nosepiece - 2"/S52
- Adapts Baader S52 accessories to a standard 2" focuser
- Integrated safety groove prevents slippage and protects equipment
- Features Baader's S52 dovetail ring for a secure connection
- Ultra-hard nosepiece for durability
Check which filter and adapter sizes clear the sensor with the Baader Nosepiece - 2"/S52, and how much light the corners lose.
Check vignettingThe Baader 2"/S52 Nosepiece provides a direct, secure connection for adapting any Baader accessory with an S52 dovetail to a standard 2" focuser or visual back. This essential component bridges Baader's rigid S52 system to the universal 2" format used by most telescopes, ensuring a solid fit for your imaging train.
This nosepiece is engineered for imagers who use components like the Baader Universal Filter Changer (UFC) and need to connect them to a 2" drawtube. The S52 dovetail provides a wide, stable attachment point.
The standout feature is the integrated safety groove machined into the 2" barrel. This groove catches the tip of your focuser's thumbscrew, providing a critical fail-safe that prevents your entire imaging assembly from sliding out if the screw loosens. Baader describes the nosepiece as ultra hard.
Its main purpose is to adapt Baader accessories that use the proprietary S52 dovetail, such as the Universal Filter Changer (UFC) system, so they can be inserted into any standard 2-inch telescope focuser or 2-inch visual back.
The safety groove is a machined channel around the barrel. It is designed to catch the tip of the focuser's locking thumbscrew. This prevents the nosepiece and any attached equipment—like an expensive camera or filter wheel—from accidentally slipping out and falling if the thumbscrew becomes slightly loose during an imaging session.
Yes. If you have a 2" visual back or a 2" diagonal attached to your SCT's rear cell, this nosepiece will allow you to connect any component with an S52 dovetail directly. It slides into the 2" holder and locks in place just like an eyepiece.
Absolutely. If your Newtonian telescope has a 2" focuser, this nosepiece attaches to the S52 port of the UFC base. This allows you to insert the entire filter system securely into the focuser, maintaining a rigid and collimated optical path.
S52 refers to Baader's proprietary 52mm dovetail system. It is designed to provide a very secure, wide-aperture, and non-flexing connection between components in an imaging train. This nosepiece serves as the critical bridge between the S52 system and a standard 2" focuser.
Yes. The telescope side of the 2" barrel has a 48mm (M48) female filter thread, so a standard 2" filter can be screwed in there. Its main purpose is to adapt the S52 dovetail ring to a 2" barrel.
| Barrel Size | 2" |
| Accessory-Side Connection | S52 Dovetail |
| Key Feature | Safety Groove |
| Material | Ultra hard |
| Net weight (kg) | 0.02 |
| Inner Diameter / Clear Aperture (mm) | M48 |
| Outer Diameter | 50.8 (2") |
| Type of Adapter | Nosepiece |
| Inner Connection (lens sided) | M48 |
| Outer Connection (lens sided) | ø 2" (50.8mm) |
| Optical length (added light path) | 0 mm |
| Telescope-side connection | 2" Barrel with M48 Female Filter Thread |
Baader Nosepiece - 2"/S52
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