Lunt Backing Plate & Focuser

(Required for CaK, White Light, Night & Terrestrial Use)

• Turn your dedicated Lunt H-alpha solar scope into a true day-to-night performer—swap on this backing plate and focuser to use CaK, white-light, nighttime, and terrestrial accessories

• Includes a standard 2" Crayford focuser for smooth, precise focusing with common 2" diagonals, eyepieces, cameras, and adapters

• Purpose-built interface for Lunt CaK modules and white-light wedges while keeping your optical train rigid and well aligned

• Quick changeover: simple install/removal so you can reconfigure in minutes between solar and non-solar setups

• Clean, secure fit maintains balance and back-focus for visual viewing or entry-level imaging

• Field-friendly construction matched to Lunt scopes—built to travel, easy to operate, and ready for outreach

• Note: product images may show an optional CaK module for illustration; CaK module is not included

Specifications

• Compatibility: Lunt H-alpha solar telescopes (model-specific fit; confirm when ordering)

• Back Plate: Replacement rear cell designed to accept a 2" focuser and standard accessories

• Focuser Type: 2" Crayford (manual, smooth rackless design)

• Use Cases Enabled: Calcium-K, white-light, nighttime astronomy, and terrestrial observing

• Accessory Interface: Supports 2" diagonals/eyepieces/cameras; works with common adapters as needed

What’s in the Box?

• Lunt Backing Plate (replacement rear cell)

• 2" Crayford Focuser

• Basic installation and usage notes

CaK module, white-light wedge, diagonals, eyepieces, and adapters are sold separately.