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Model: antlia_oag_fdPart Number: OAG
This combined OAG and Filter Drawer provides flexure-free Off Axis Guiding and considerable weight saving (compared to separate OAG/Filter Wheel combinations).
This feels like a substantial piece of kit. Handy thickness of 37.5mm means that perfect backfocus was achieved just attaching it to my ASI2600 camera (which already has 17.5mm). I set it up during the day time and then fin tuned on the first clear night. Lots of accessories included and the filter drawer has a good strong magnet to keep it closed, so no risk of it dropping to the ground. The large prism meant I had plenty of stars to choose from with my ZWO 290 mini camera. No vignetting when the prism was fully in, even with my APSC sized main camera sensor. I use a ZWO AM5 harmonic drive mount, so regularly get good guiding at approx 0.8rms. With the OAG this improved further to approx 0.5rms. Really impressed with it.
First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY
Company No. 5892293VAT No. 907 2895 01
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