{"id":394790,"date":"2024-11-21T14:42:25","date_gmt":"2024-11-21T14:42:25","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/optic-studio-zemax-operand-values-are-different-from-the-plot-genc-and-denc\/"},"modified":"2024-11-21T14:42:25","modified_gmt":"2024-11-21T14:42:25","slug":"optic-studio-zemax-operand-values-are-different-from-the-plot-genc-and-denc","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/optic-studio-zemax-operand-values-are-different-from-the-plot-genc-and-denc\/","title":{"rendered":"Optic studio-zemax operand values are different from the plot (Genc and Denc)"},"content":{"rendered":"<p>&lt;p class=&#8221;xmsonormal&#8221;&gt;I have a segmented telescope model, which is using non-sequential components to represent the segments. The issue arises with the DENC and GENC operands, which return incorrect values when I introduce disturbances to the segments(for example, center and clocking). The encircled energy value I observe in the plot differs from what GENC and DENC report after I apply any clocking or decentering adjustments to a segment. However, in the nominal model&mdash;where no disturbances are applied to the segments&mdash;the GENC and DENC values are accurate. I have used different sampling does effect DENC but not GENC&lt;\/p&gt;&lt;p class=&#8221;xmsonormal&#8221;&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/21-11-2024-1732200056-1.png\" alt=\"\" \/>&lt;\/p&gt;&lt;p class=&#8221;xmsonormal&#8221;&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/21-11-2024-1732200089-2.png\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394790","topic","type-topic","status-publish","hentry","topic-tag-merit-function","topic-tag-non-sequential","topic-tag-opticstudio","topic-tag-optimization"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["369211","50911","29675"],"_bbp_author_ip":["150.204.240.232"],"_btv_view_count":["754"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["394790"],"_bbp_forum_id":["27816"],"_bbp_engagement":["29675","50911","369211"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["404060"],"_bbp_last_active_id":["404060"],"_bbp_last_active_time":["2025-01-08 08:46:14"]},"test":"a-ranjbarljmu-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394790\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=394790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}