| 000 | 00596nam a2200181 4500 | ||
|---|---|---|---|
| 003 | OSt | ||
| 005 | 20210405162233.0 | ||
| 008 | 210405b xxu||||| |||| 00| 0 eng d | ||
| 040 | _cIIT Kanpur | ||
| 041 | _aeng | ||
| 245 |
_aEvalution of image quality in a cassegrain-type telescope with an oscillating secondary mirror [NASA TM X-3137] _cErickson, E.F. |
||
| 260 |
_aWashington, D.C. _bNational Areonautics and Space Administration _c1975 |
||
| 300 | _a24p. | ||
| 440 | _aNational Areonautics and Space Administration (NASA)0 | ||
| 650 | _aTelescope | ||
| 700 | _aMatthews, S | ||
| 942 | _cBK | ||
| 999 |
_c564475 _d564475 |
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