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Thread: Skywatcher Virtuoso 90mm

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    Default Skywatcher Virtuoso 90mm



    Hello! I'm very new to this. I just got a Skywatcher Virtuoso 90mm, secondhand, in very good condition (at least in my amateur eye). Some background info on the unit: Previous owner bought it a year ago, and hasn't used it much because he was busy with work.

    Anyway, I tried using it as soon as it arrived. The moon was bright, and the skies were clear. Unfortunately, the telescope seems to have a focus issue. The previous user was helpful with this issue but it hasn't been solved yet. I maxed out the knobs on the left side and slowly worked my way maxing to the right, all the while viewing through a 25mm eyepiece. It didn't work. It was like looking at a blurry yellow drop of water through a magnifying glass.

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    Default Re: Skywatcher Virtuoso 90mm

    Welcome to the forum!!

    Do what you did again during the day with the scope pointed at a distant background. Go from one focus stop working VERY SLOWLY back the other way. At some point along the way, the background should come into focus. Make sure you are pointing at something distant, the farther the better. Once found, do not change the focus, this should be close (not exact) for an astronomical object.

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    Default Re: Skywatcher Virtuoso 90mm

    Thank you! I've gotten it to work, but I seem to be getting close-up views of the moon. I used the 25mm eyepiece. I also tried using it with a 2x barlow lens. I'm from the Philippines, but I don't if that's the reason why we can't get a full view of the moon using the 25mm eyepiece. Is it something we can fix with the focus knob or do we have to change the eyepiece entirely?

    P.S. we got the close up view, but the view isn't entirely crisp/HD-like. Is that how it usually works or do I have to adjust the focus more?

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    Default Re: Skywatcher Virtuoso 90mm

    To get a wider view, you will have to either get a longer focal length EP (I assume your 25mm is a plossl and the widest in that EP design of 1.25" is a 32mm), or get a wider EP design (something between 60-82 degrees: a plossl is about 50 degrees), or get a focal reducer. You can not widen the view by focusing. The best possible focus is when you get stars to appear as the smallest pinpoint, it is better to focus on stars before you turn the scope on the moon.
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    Default Re: Skywatcher Virtuoso 90mm

    Hello and welcome to the forum. Excellent advice you've received from Ozman - try a longer focal length eyepiece (32mm plossl) although your scope isn't really designed for wide views.
    Bob


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