Description
Highlights
- Baader Diamond Steeltrack® (BDS-SC) for Schmidt-Cassegrains (EdgeHD) with 30 mm focus travel
- Minimum height (as supplied – incl. 2" clamp): 93 mm
- Minimum height (with optional S58 direct-thread adapters): 80 mm
- Focuser weight (as supplied – incl. 2" Klemme): 1.040 g (36.7 oz)
- Includes 2" and 3.3" adapter to fit all C14/C11/C9¼/C8/C6/ OTA's
General Specifications for all Baader Diamond Steeltrack® (BDS) focusers:
Drive system
- True diamonds form a micro-geared high precision drive system never accomplished before
- In comparison to conventional crayford or rack & pinion drives, this micro-geared movement has zero backlash, zero cogging, and zero flexure
- Diamond Steeltrack® 2" focusers lift a payload of 6kg (13 lbs) straight up, without slipping, without excessive bearing preload (bearing preload can be increased further if necessary)
- Bearing system utilizes unbreakable Instrument Grade Roller-Bearings instead of simpler Ball Bearings - handles higher loads with greater rigidity and accuracy. No Teflon-pads anywhere
- 1:10 Stainless Steel fine-focus mechanism, ready for attachment of the optional Diamond Steeldrive temperature-compensating motor drive system
- Detachable drive block assembly is reversible for right hand or left hand fine-focus operation and for attaching the Diamond Steeldrive motor block
- Shortest possible mechanical design achieves optimum balance between focuser height (backfocus) and rigidity requirements
- Zero shift locking knob to precisely stop any movement without affecting optical axis adjustment
Multiple Adapters available for shortest possible connection to most cameras / eyepieces
Mounting of BDS-Adapters on the example of BDS-NT Diamond Steeltrack®
Clamping system
- S58 Dovetail ring-clamp built into focusing tube for accepting optional T-2 / M48 / M68 and other S58 direct-thread adapters to enable direct thread connection of accessories and cameras without 2" clamp
- 2" eyepiece clamp with hardened bronze clamp ring (length of clamp: 12.5mm / ½") included as standard
- Optionally available 2" Baader Clicklock-clamp w. integrated S58 dovetail (added length: 16mm / 5/8")
- Two auxiliary threads (M60x1 and M55x0,75) cut into the RT & NT focusing-tube for attachment of dedicated field flatteners or focal reducers/correctors
BDS-SC: all views
Imaging / eyepiece projection on the example of BDS-RT Diamond Steeltrack
Focusing Drawtube:
- Each bearing individually adjustable for precise alignment of mechanical vs. optical axis
- Ultra-hard subzero coated bearing races – precision milled and much harder than anodizing or stainless steel
- Oversized 55mm inner clear diameter, to prevent vignetting, with anti-reflection knife-edge baffles
Specifications
| Manufacturer | Baader Planetarium |
|---|---|
| SKU (#) | 2957220 |
| Weight (NETTO) | 1.04 |
| Focuser Travel | 30 mm |
| Payload Capacity (kg) | 6 kg |
| Inner Diameter / Clear Aperture (mm) | 55 |
| Shortest overall height (standard) | 93 mm |
| Shortest overall height (w. opt. adapters) | 80 mm |
| Reduction | 1:10 |
| Rotatable | Yes |
| Finder base | No |
| Motorized | No, but can be upgraded |
| Special Features | True diamonds form a micro-geared high precision drive system |
| Included Accessories | Includes adapter to fit all C14/C11/C9¼/C8/C6/C5 OTA's |
| Inner Connection (lens sided) | Thread, 2" (50,8mm), 3,3", UNC |
| Inner Connection (eyepiece/-camera-sided) | Thread, Clamp, Dovetail ring clamp, M55, S58, 2" (50,8mm) |
| Optional Accessories | Baader Steeldrive temperature compensating motor drive system |
| compatible telescopes | Schmidt-Cassegrain |
| Focuser style | Crayford |
| Focuser size | 2 inch |