Baader Planetarium Diamond Steeltrack 2" Focuser for SC/HD Telescopes, 30mm Travel, incl Adapter for 3.3" & 2" SC/HD Threads - 2957220
2957220
Baader Planetarium Diamond Steeltrack 2" Focuser for SC/HD Telescopes, 30mm Travel, incl Adapter for 3.3" & 2" SC/HD Threads - 2957220
2957220
Why Purchase from All-Star Telescope?
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Product Description
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
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
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 |
| NET WEIGHT (KG) | 1.07 |
| EAN CODE | 4047825031983 |
| 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/C9 1/4/C8/C6/C5 OTA’s |
| INNER CONNECTION (LENS SIDED) | 2"/SCT Thread (50.8mm), 3.3"/SCT Thread (84.2 mm) |
| INNER CONNECTION (EYEPIECE/-CAMERA-SIDED) | ø 2" (50.8mm), M55, S58 |
| OPTIONAL ACCESSORIES | Baader Steeldrive temperature compensating motor drive system |
| COMPATIBLE TELESCOPES | Schmidt-Cassegrain |
| FOCUSER STYLE | Crayford |
| FOCUSER SIZE | 2 inch |
Customer Reviews
Auto focus just isn't reliable with the EdgeHD system that utilizes moving the primary mirror. There is no accurate way to set backlash lash and it can be quite severe. You also have to deal with mirror-flop. The Baader Diamond Steeltrack focuser solves these issues and allows accurate auto-focus routines. The 80mm size and 30mm movement nicely replaces the standard 90mm visual back that sits before the 55mm image train backspace to give you the ideal 146mm back space. Highly recommended!
