What is the main benefit of installing the Starlight Instruments MPA Retrofit on my old TeleVue scope?
The primary benefit is adding dual-speed fine focusing. This allows you to make extremely small, precise adjustments, which is critical for achieving sharp focus at high magnifications on targets like planets, the Moon, and double stars—something very difficult with the original single-speed focuser knob.
How do I know if this MPA Retrofit will fit my TeleVue telescope?
This model is specifically for TeleVue telescopes made before 2005 that have a chrome-colored draw tube. It will not fit newer models or those with a black draw tube. Please verify your telescope's age and draw tube color before purchasing.
Will I need to replace my entire focuser to use this Starlight Instruments MPA Retrofit?
No. This is a pinion assembly retrofit, not a complete focuser. You will remove the original knob assembly from your TeleVue focuser and install this Starlight Instruments unit in its place, keeping your telescope's original focuser body and draw tube.
What is the brake on the Starlight Instruments MPA Retrofit used for?
The brake is a small thumbscrew that allows you to increase the friction on the drawtube. This is useful for two reasons: it prevents the focuser from moving under the weight of heavy eyepieces or cameras, and it can lock the focus position securely once you have achieved a sharp image.
When trying to focus on Jupiter with my TeleVue Genesis, the stock focuser often jumps. Will this MPA Retrofit help?
Yes, absolutely. The "jumpiness" you experience is exactly the problem this upgrade solves. The fine-focus knob provides smooth, minute control, allowing you to ease into perfect focus on Jupiter's cloud bands and moons without overshooting the mark. It will make high-power planetary viewing with your Genesis significantly easier and more rewarding.
I want to do some simple afocal imaging of the Moon with my TeleVue Pronto. Is this Starlight Instruments upgrade necessary?
While not strictly necessary, it is highly recommended. Achieving critical focus is the most important step in any form of astrophotography. The Starlight Instruments MPA Retrofit will allow you to precisely focus the lunar image for your camera, resulting in much sharper and more detailed photos than you could likely achieve with the stock single-speed focuser.
