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SSP Photometer Series: For several decades amateur astronomers have been providing valuable scientific data in collaboration with professional astronomers using Optec's SSP Single-Channel Stellar Photometers. The technology is proven to be capable of millimag accuracies with amateur level telescopes and mounts. An SSP photometer will allow you to contribute collaborative astronomical data to the greater scientific community through groups such as the AAVSO, IOTA, ALPO and others.
The SSP-5 PMT-based (photomultiplier tube) single channel photometer provides greater sensitivity than the SSP-3 and faster response time for occultation measurements. The SSP-5 has nearly 5 magnitudes greater sensitivity compared to the SSP-3. Using an optional extended red-sensitive PMT and Optec filters, the SSP-5 and SSP-5A can provide accurate photometric measurements in the Johnson U, B, V and R bands. Optec also stocks filters for the Strömgren u v b y bands.
The SSP-5A version provide a motorized 6-filter slider for robotic operation.
Optec has been making the SSP-5 high-precision stellar photoelectric photometer for nearly 20 years. Recently, the SSP-5 has had a major upgrade to bring the technology up to current standards. The current model is considered Generation 2. The use of a photomultiplier tube (PMT) allows fainter stars to be measured accurately and the enhanced response time of 1 ms allows fast events such as lunar occultation to be recorded with greater time resolution.
In spite of the fact that a PMT based photometer is more sensitive to damage from bright lights or rough handling, a great deal of effort has been expended to make the SSP-5 nearly as survivable as the SSP-3. The SSP-5 will allow the researcher to measure both bright and faint stars in the UBVRI spectral region with the degree of precision and reliability associated with the venerable SSP-3.
The SSP-5 Photometer is the central part of a complete stellar magnitude measurement system. This latest version of the SSP-5 features a serial output port for connection to a PC or laptop computer. An interface program called SSPDataq (freeware) is available. This program allows for data capture in any color and reduction of B and V magnitudes. The SSP-5 is intended for serious observers.
