COMPANY SEVEN'S IN HOUSE QUALITY CONTROL PROGRAMS

Company Seven works diligently to earn and to maintain the trust of our community. To that end we evaluate each telescope with the hope that your first experience with our telescopes will be highly gratifying. At a time when most retailers simply forward a new order to the factory and then have the item "drop shipped" directly to the customer, Company Seven remains more and more unique. At no extra cost to our customer, each telescope we offer is carefully examined and tested here at Company Seven to assure our customers receive the best complete example of what the factory is capable of producing.

Company Seven is the only Vixen retailer in North America who has the resources of experienced personnel and the technology to perform as detailed a survey of each new instrument that arrives. Our process is so concise that a failure is not likely to be found by our customer. As the telescope check-out and preparation for delivery are completed; each telescope optics set, mechanics and electronics are checked by technicians with many years of experience. Furthermore, as every telescope is processed, we generate a comprehensive report characterizing its recommended photo-visual and CCD performance parameters.

OPTIONAL EVALUATION/CHARACTERIZATION While Company Seven does perform a subjective evaluation of every telescope, Company Seven can also perform optional highly detailed testing which will produce detailed documentation of each telescope optical tube assembly.

The optional testing will be done on a Zygo Large Aperture Phase Measurement Interferometer and this will provide a very accurate characterization of the telescope. Our normal testing is done at 632.8nm (others available on smaller apertures), with the telescope acclimated at Standard Temperature and Pressure. The test will be performed at full aperture, with the telescope optically aligned and set to nominal infinity focus. The test will provide:

• Interferogram diagram
  
• Measure of System Peak to Valley
  
• Measure of System RMS
  
• Measure of System MTF
  
• Measure of System PSF - energy concentration at focus
  
• Measure of System Strehl
  
• Wave front diagram

The testing will be performed as part of the acceptance testing prior to delivery of the telescope to our customer. The test reports will then be delivered with the telescope in the forms of printout, and in Code V and Zygo formats on computer disk. For detailed information about the cost of this optional Zygo testing please contact Company Seven. Please understand that this is a program we offer only in support of individual telescopes which we sell, or those owned by institutional, industry, or government.

WARRANTY AND REMEDY

The warranty provided with Vixen North America products is valid for a term of one year from date of purcahse. This applies to defects related to workmanship or materials. Tampering, or unauthorized cleaning or service efforts will void the warranty. The sales receipt will be proof of purchase date. Should an issue arise that may require repair or adjustment, then Company Seven will be your preferred point of contact. Of course you retain the choice of working a solution through the Vixen North America office in New York too.

Simply call us with your concern. More often than not, the problem is a matter of operator error or a misunderstanding of directions. If we cannot quickly resolve the issue with a discussion, then we may suggest that the instrument be brought or shipped to Company Seven (or to the manufacturer if that is more convenient to the customer). If we find a fault of the instrument in manufacture, or a premature failure then Company Seven will be responsible for fixing it and returning it to the customer - all at our expense. Company Seven will even refund the return shipping costs if applicable. We are the only shop outside of Vixen North America who is so well qualified to troubleshoot and repair Vixen products.