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Denkmeier Binotron IVB Power Switch Star Diagonal S2
Denkmeier Binotron IVB Power Switch Star Diagonal S2
Denkmeier Binotron IVB Power Switch Star Diagonal S2

Denkmeier Binotron IVB Power Switch Star Diagonal S2 for SCT

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Estimated Arrival: Between Mar 06 and Mar 12. *ETA to USA Only

Shipping & Returns: Satisfaction guaranteed 30 day return policy.


The IVB Power Switch Star Diagonal S2 is designed to allow your Schmidt-Cassegrain to focus The Binotron 27 in reduction (.66X), normal (1.15X) and 2X. These instant powers allow on pair of eyepieces to operate in three powers for the entire observing night.

The IVB (interlocking Visual Back) is especially useful for SCTs on Wedge and Equitorial mounts because the interlocking components prevent accidental rotation when the scope is moved to a new position. The IVB thread-on section (right photo) attaches to all SCTs and the IVB Diagonal (center photo) has a silver "sprocket" that intermeshes with the visual back's black sprocket. The meet and lock preventing rotation. No heavy torque is required to secure or loosen this system! 


We know that once you've placed your order, you are anxious to receive it! We make every effort to get your order shipped out to you as quickly as possible.

As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase. We will process the charges to your credit card and your order will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

Standard shipping time in the US is between 3-5 business days, though it can vary slightly depending on the destination. We typically For updates on your shipment you can enter your tracking number here.

We distribute nationwide via UPS and Fedex. Unfortunately, at this time we are not able to provide expedited or international shipping.