Use the Stellarvue F050HNR to turn your F050M2 into a straight through finderscope! Simply unthread the right angle prism assembly from the main tube and replace it with the F050HNR. It features a 1.25" non-rotating helical focuser and includes a 10mm STE52 extension. Remember that when using the F050HNR on your finderscope your image will be inverted.
Since the F050HNR is the same focuser that is used on our F050G, the finderscope may now be used as a guide scope as well. The focuser has a standard 1.25" compression ring unit with an external M42 X .75 t-thread. So one can either use a guide camera's t-thread or a 1.25" nosepiece.
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The F05NR is just what the doctor ordered to convert my Stellarvue 50mm finder into a guidescope. The addition of a 3x Barlow and a ZWO ASI174 mini makes for a fantastic guidescope with excellent PHD guiding performance for my SCT. Operation is smooth and can be locked down to prevent defocusing.
I needed a small focuser for a project and this was the perfect fit! The quality is outstanding, a great value for the price!
I have been using a Stellarvue 50mm Finderscope for 10 years on my SCT and found it a great little visual scope that I use often. Now it makes a great guide scope as well with this focuser. It shipped with a 10mm ring that works perfect with a SSAG and my old cross hair eye piece as well. Can't wait to use it with my new SVR102T-IS.
I bought this to turn my RACI 9x50 finderscope into a guidescope for my Lacerta MGEN guider (7 mm backfocus from the T mount). By using the focuser's T thread I can bring the camera in focus a few notches before reaching the end of the focuser travel range, which is just fine for me.
This focuser is very well made. Action is super smooth and has plenty of travel for autoguiding cameras (I use a ZWO ASI120MC-S). I particularly enjoy the graduations on the barrel; refocusing is easy and swift. Wonderful product; thank you Sellarvue!