Keo Sentry Imagers for Airglow Research
The Keo Sentry is the classic workhorse of allsky and narrow-field airglow imaging designed by Dr. Bob Eather, based on his extensive field experience since the 1960s. Constant, incremental improvements since then, based in large part on customer feedback, has resulted in an imager that is even better than ever.
In addition to its standard allsky (180 deg) field-of-view (FoV), field-replacable FoV modules of 8, 19, 46, and 76 degrees are available off the shelf, ideal for cross-scale studies. Custom FoVs are available as well.
The Sentry can be built to use either 3" or 4" diameter filters. Sensitivity better than 10 R is readily acheivable. Single-filter and filter-wheel based (6- and 8-slot wheels) units are available. The filter-wheel is carefully temperature stabilized for optimum performance of narrow-band interference filters. Narrow-band filters from 1.8 FWHM is available. These are image quality, hard-coated, and optimized for cone angle. Filters are custom manufactured to Keo Scientific's own demanding specifications. Remarkably, Keo Scientific's optical design allows imaging at speeds of F0.95 (steep cone angle) through such narrow-band filters. Also included is a high-reliability capping shutter and a bright-light protection sensor. The imager can be controlled by any computer equipped with a high-speed USB (USB2) communications interface.
CCD Camera sensor head options include a range of Scientific Grade-1+ (hand-picked by the manufacturer for Keo Scientific Ltd.) back-illuminated CCDs (13.3x 13.3 mm to 27.6 x 27.6 mm) with quantum efficiencies better than 95%, thermoelectric cooling better than -80 degrees C and lifetime vacuum guarantee for maintenance-free operation. Deep-depletion and eXcelon CCDs are available for suppressing or eliminating etaloniong effects in the NIR.
An IR optimized version of this imager is available.
All supported by Keo Scientific's 3-year warranty and our famous "go that extra mile" lifetime free cheerful support service.
A wide range of filters, both narrowband and wideband, suitable for airglow research is available. Some of our most popular models are 557.7, 630.0 nm, 777.4 nm, OH, Na, and notched wideband OH filter. We also provide suitable background wavelengths. We order these in quantity from the manufacturer and are able to pass them on to customers at highly advantageous prices.
Absolute spectral and zonal calibration services are available.
The KeoSynopticx automatic ephemerides-driven field-operation software (see below) provides a truly turn-key solution. Download the User's Manual here.
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KeoSynopticx
KeoSynopticx provides an easy to use imager control interface for automated imaging operations. It enables the synchronization of filter selection, CCD/exposure settings and shutter operation through a Graphical User Interface. Download the User's Manual here.