Baader Solar Projection Screen (BSPS) (Baader Planetarium, SKU: 2420400) is a solar projection screen designed for safe white-light observation of the Sun with refractor telescopes equipped with a diagonal or prism. Instead of looking directly through an eyepiece, the image of the solar disc is projected onto a rear projection surface, making the system well suited for educational use, public outreach and small group observing. The BSPS creates a closed projection setup that reduces the risk of accidental contact with the light path or looking into the eyepiece during operation.

Key features

• screen for safe white-light solar projection
• suitable for individual use and small group observing
• closed projection system with rear projection surface
• T-2 thread for connection to eyepiece projection adapters
• optimized for use with refractors equipped with a diagonal or prism
• suitable for observing sunspots, solar limb darkening and solar eclipses
• can also be used for mount tracking and alignment control during daytime operation
• quick assembly from die-cut cardboard parts with pre-mounted adhesive strips
• optimized for side viewing

Box contents

• BSPS projection screen
• T-2 thread adapter
• cardboard housing kit consisting of three parts with pre-mounted adhesive strips

Technical specifications

• product name: Baader Solar Projection Screen (BSPS)
• SKU: 2420400
• accessory type: solar projection screen
• projection surface: 9 × 9 cm
• connection thread: T-2
• recommended telescope: refractor suitable for solar projection, used with a diagonal or prism
• recommended telescope focal length range: 250–1200 mm
• recommended focal ratio: from approximately f/6
• required focus reserve: minimum 30 mm backfocus
• required accessories for operation: eyepiece projection adapter with T-2 connection and an eyepiece suitable for solar projection
• minimum solar image diameter: 60 mm
• warranty: 24 months

The Baader BSPS is a practical solution for safe solar demonstrations and projected observing sessions, especially wherever ease of use and simultaneous viewing by several people are important.