My plan is to use the SIPS (see: http://starlightinstruments.com/store/index.php?route=product/product&produc...). It is expensive, but I will need a good focuser anyway. Since this device integrates a great focuser and a TeleVue type 2 coma corrector it fits the bill nicely. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Wednesday, October 30, 2013 10:57 AM To: Utah Astronomy Subject: [Utah-astronomy] Mat's new 21 inch Which coma corrector are you going with, Mat? On Wed, Oct 30, 2013 at 8:39 AM, Hutchings, Mat <mat.hutchings@siemens.com>wrote:
I will probably go slightly faster than f4 just to make sure
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