You can attach the Off-Axis-Guider for Baader FlipMirror II (BFM-OAG) directly to the Baader FlipMirror II Mirror Diagonal. 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. The distance between the optical axis and the center of the OAG prism is 17.5mm - once the 4mm spacer ring is removed. This distance provides the largest possible vignetting-free field while retaining all the advantages of the large and movable prism.
This information is important, among other things, to be able to estimate or avoid vignetting of the camera sensor. If the prism would protrude too far into the light path, the 4mm spacer ring can be inserted. However, this reduces the usable area of the prism, and thus also the amount of light that can be used for tracking. The BFM-OAG is also part of the Off Axis Guider for RCC (RCC-OAG) # 2956950. 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.
Off-Axis-Guider unten am BFM II. Das Prisma schaut immer unter dem Spiegel hindurch. The Off-Axis-Guider mounted under the BFM II. The prism is visible in the housing, under the mirror. The 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.
Features:
Spifications:
Kit content
Baader Off-Axis Guider for Baader Flip Mirror II
User guide
For more information about, Baader Off-Axis Guider for Baader Flip Mirror II website.
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