{"product_id":"off-axis-guider-for-baader-flipmirror-ii-bfm-oag","title":"Off Axis Guider for Baader FlipMirror II (BFM-OAG)","description":"\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); font-family: \" open sans sans-serif optimizespeed rgb line-height:=\"\" text-rendering:=\"\" background-color:=\"\"\u003eOff Axis Guider for Baader FlipMirror II (BFM-OAG)\u003c\/h3\u003e\u003cdiv class=\"rightImage\" style=\"box-sizing: border-box; margin: 0px 0px 1em 15px; padding: 0px; font-family: \" open sans sans-serif center top right rgb text-align:=\"\" vertical-align:=\"\" float:=\"\" clear:=\"\" color:=\"\" font-size:=\"\" background-color:=\"\" width:=\"\"\u003e\u003ca class=\"image-popup\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2956951-30-T-N-1_OAG-BFM2-noRing_3bcb406b-16ae-46a3-865f-e1842e7fd9e4.jpg?v=1766555363\" target=\"_blank\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003e\u003cimg alt=\"Mach1GTO\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2956951-30-T-N-1_OAG-BFM2-noRing_3bcb406b-16ae-46a3-865f-e1842e7fd9e4.jpg?v=1766555363\" width=\"300\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eThis Off-Axis-Guider is made for the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/baader-flipmirror-ii.html\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003eBaader FlipMirror II (BFM II) Mirror Diagonal #2458055\u003c\/a\u003e. It connects to the bottom port of the BFM II (19 mm nosepiece) and sends light through a pickup-prism to an autoguider camera, independent of the position of the mirror. To attach the Off-Axis-Guider instead to a telescope \u003cem style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"\u003ewithout \u003c\/em\u003eBFM II, you need the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/rcc-off-axis-guider.html\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003eOff Axis Guider for RCC (RCC-OAG) # 2956950\u003c\/a\u003e with T-2-threads.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eYou can attach the Off-Axis-Guider for Baader FlipMirror II (BFM-OAG) directly to the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/baader-flipmirror-ii.html\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003eBaader FlipMirror II Mirror Diagonal\u003c\/a\u003e. You only have to remove the small spacer ring which is included as shown in the image to the left, so that the prism is fully inserted into the light path of the BFM II.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003e\u003cstrong style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"\u003ePlease note:\u003c\/strong\u003e this is the only prism that can be tuned to actively center a star on the guiding chip. The vertical side of the prism must face the telescope.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eThe BFM-OAG is also part of the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/rcc-off-axis-guider.html\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003eOff Axis Guider for RCC (RCC-OAG) # 2956950\u003c\/a\u003e. To use this item with the BFM II, you need to remove the unit with the pick-up prism from the T-2-ring and the spacer ring from the pick-up prism exactly as with the Off-Axis-Guider for BFM II.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003e\u003c\/p\u003e\u003cdiv class=\"rightImage\" style=\"box-sizing: border-box; margin: 0px 0px 1em 15px; padding: 0px; font-family: \" open sans sans-serif center top right rgb text-align:=\"\" vertical-align:=\"\" float:=\"\" clear:=\"\" color:=\"\" font-size:=\"\" background-color:=\"\" width:=\"\"\u003e\n\u003ca class=\"image-popup\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/baader-flipmirror-ii-b19_e065801d-0990-455d-935d-a84f28935b23.gif?v=1766555366\" target=\"_blank\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003e\u003cimg alt=\"Off-Axis-Guider unten am BFM II. Das Prisma schaut immer unter dem Spiegel hindurch.\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/baader-flipmirror-ii-b19_e065801d-0990-455d-935d-a84f28935b23.gif?v=1766555366\" title=\"Off-Axis-Guider unten am BFM II. Das Prisma schaut immer unter dem Spiegel hindurch.\" width=\"300\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003c\/a\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003eThe Off-Axis-Guider mounted under the BFM II. The prism is visible in the housing, under the mirror.\u003c\/div\u003e\n\u003c\/div\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eThe prism is always below the mirror so that it can also be used when the mirror is down, e.g. to guide a planetary camera connected to the upper port. When the mirror is up, the camera at the rear port should be aligned in such a way that the prism is under the long side of the sensor.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eYou have several options to set the guiding camera to the same focus plane as the cameras\/eyepieces which are connected to main light path of the FlipMirror. You can use the usual combinations of T-2 or M48 extensions tubes to change the position of camera\/eyepieces. If you need to bring the autoguider further away from the BFM II, you can extend the 1¼\" nosepiece of your autoguider with one or two \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/baader-dt-4--1%C2%BC%22---31.8mm-nosepiece-extension-(t-2-part-05).html\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003eDT-4-nosepiece extensions #1905130\u003c\/a\u003e and lock the position with the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/baader-fr-4-focusing-ring-collar-1%C2%BC%22-(t-2-part-30).html\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003eFocusing Ring Collar FR-4 #1905131\u003c\/a\u003e.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eIf you are using an Off-Axis Guider, you must also consider the focus position of the guiding camera. If you use the Off-Axis-Guider for Baader FlipMirror II as well as a guiding camera whose image plane is at the upper end of the Off-Axis-Guider (i.e. without additional back focus), the image plane of the camera and eyepiece is about 24mm behind the two T-2 threads of the BFM II. A CCD camera with a short back focus, for example, can be adjusted to this distance with a VariLock 29, as can the Polaris I crosshair eyepiece when connected directly to the VariLock 29 via T-2. Thus, a very short adaptation is possible.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eIf you use a DSLR via a T-2 adapter, or an eyepiece clamp for the eyepiece, you need more back focus. Then, the guiding camera must be placed at a greater distance from the BFM II. The easiest way to do this is to use the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/baader-dt-4--1%C2%BC%22---31.8mm-nosepiece-extension-(t-2-part-05).html\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration-line: none; transition: all 0.2s ease 0s;\"\u003eDT-4 nosepiece extension #1905130\u003c\/a\u003e with an overall length of 18.5mm. It has the diameter of \"1¼\" eyepieces and is screwed into the \"1¼\" filter thread of the guiding camera. With one or two of these extensions, you can place virtually any camera over the off-axis guide so that it is parfocal with the recording camera.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013534216303,"sku":"BFM-OAG","price":179.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/off-axis-guider-for-baader-flipmirror-ii-bfm-oag-bd0__48610.jpg?v=1766555368","url":"https:\/\/ontariotelescope.com\/products\/off-axis-guider-for-baader-flipmirror-ii-bfm-oag","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}