div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentgbt-4-national-radio-astronomy-gbt-memo-no-performance-geometrical-htmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: GBT 4 - National Radio Astronomy ObservatorylibrarynraoedupublicmemosgbtlegacyGBT_Memo_4pdf · GBT Memo No PERFORMANCE geometrical and a clear aperture doubly offset loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader031fdocumentsnetreader031viewer20220217185b88f8a17f8b9abf5c8ca934html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentgbt-4-national-radio-astronomy-gbt-memo-no-performance-geometrical-htmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: GBT 4 - National Radio Astronomy ObservatorylibrarynraoedupublicmemosgbtlegacyGBT_Memo_4pdf · GBT Memo No PERFORMANCE geometrical and a clear aperture doubly offset loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader031fdocumentsnetreader031viewer20220217185b88f8a17f8b9abf5c8ca934html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentgbt-4-national-radio-astronomy-gbt-memo-no-performance-geometrical-htmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: GBT 4 - National Radio Astronomy ObservatorylibrarynraoedupublicmemosgbtlegacyGBT_Memo_4pdf · GBT Memo No PERFORMANCE geometrical and a clear aperture doubly offset loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader031fdocumentsnetreader031viewer20220217185b88f8a17f8b9abf5c8ca934html5thumbnails3jpg width=140 height=200...