OPTICAL PERFORMANCE OF MULTI-CHANNEL UV AND VISIBLE SPECTROGRAPH
Final rept. for 1 Apr-30 Jun 1965
BOSTON COLL CHESTNUT HILL MA
Pagination or Media Count:
Optical performance tests were made on a multi-channel UV and visible photographic spectrograph of the Ebert type which was designed and built by IIT Research Institute, Chicago, Illinois. The instrument was provided with several channels of fiber optics leading into the spectrograph entrance slit. These fibers could be directed at luminous sources at various spacial positions. It was determined that the spectral range was 2500A to 6500A, the average plate factor was 111A per mm. and the resolving power was better than 2A. It was shown that the field of view of each bundle of optical fibers provided excellent light collecting abilities up to 6 deg around the optic axis and slightly less collecting ability up to 12 deg. Each of the fiber bundles was approximately 0. 254mm in diameter. The spectrograph accordingly met its optical design specifications. However, it was recommended that the open photographic reels be replaced by light-proof magazines.