From mickey@ahinahina.ifa.hawaii.edu Fri Feb 4 14:53:43 2000 Received: from hale.IfA.Hawaii.Edu (hale [128.171.2.6]) by maile.ifa.hawaii.edu (8.9.0/8.9.0) with ESMTP id OAA17129 for ; Fri, 4 Feb 2000 14:53:42 -1000 (HST) Received: from ahinahina.ifa.hawaii.edu (ahinahina.IfA.Hawaii.Edu [128.171.5.37]) by hale.IfA.Hawaii.Edu (8.9.3+Sun/8.9.1) with ESMTP id OAA09614; Fri, 4 Feb 2000 14:53:41 -1000 (HST) Received: from ahinahina.ifa.hawaii.edu (localhost [127.0.0.1]) by ahinahina.ifa.hawaii.edu (8.9.0/8.9.0) with ESMTP id OAA01115; Fri, 4 Feb 2000 14:53:35 -1000 (HST) Message-Id: <200002050053.OAA01115@ahinahina.ifa.hawaii.edu> X-Mailer: exmh version 2.1.1 10/15/1999 To: MCCD-upgrade@ahinahina.ifa.hawaii.edu cc: Don Mickey Subject: Spectrograph image scale Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 04 Feb 2000 14:53:35 -1000 From: Don Mickey Content-Length: 413 Status: R I have some documents from Joe Rush, who built the spectrograph. There is lots of information; one item is that the collimator focal length is 116.9 inches and the camera focal length is 120.2 in. The design slit length is 1.0 in, so the length at the focal plane is about 1.03 in. This magnification should be remembered when we think about image scale. -- --Don Mickey