What kind of mount is required for the IDEAL 16 OTA?
With a nominal tube weight of 29kg and a length of 1580mm, the IDEAL 16 requires a substantial equatorial mount. You should look for a mount with a payload capacity of at least 45-50kg for visual use, and preferably higher for stable astrophotography to account for cameras, guide scopes, and other accessories.
Is the 1/10 PV upgrade on the IDEAL 16 worth it for imaging Jupiter?
Yes, for dedicated planetary imagers, the 1/10 PV upgrade is a significant investment. The higher surface accuracy translates directly to higher contrast on low-contrast features, such as subtle swirls in Jupiter's zones or faint festoons. While the 1/6 PV standard is excellent, the 1/10 PV ensures your final image resolution is limited by the atmosphere, not the telescope's mirror.
How will the IDEAL 16 perform on a large target like the Andromeda Galaxy (M31)?
The IDEAL 16's combination of a 400mm aperture and f/4 focal ratio is perfect for large targets like M31. The massive light-gathering ability will reveal faint outer dust lanes and companion galaxies M32 and M110 with stunning clarity. The fast focal ratio provides a wide field of view, allowing you to frame the entire galaxy with appropriate eyepieces or a full-frame camera.
What is the purpose of the 9-point mirror cell on the IDEAL 16?
A large 400mm mirror is heavy and can deform under its own weight if not supported properly. The CNC 9 point suspension cell provides precisely calculated support points across the back of the mirror. This prevents sagging and flexure as the telescope moves across the sky, maintaining the mirror's precise optical figure and ensuring sharp focus.
Does the fast f/4 optical system of the IDEAL 16 require a coma corrector?
Yes, like all fast Newtonian telescopes, the IDEAL 16 will exhibit coma, an aberration that makes stars at the edge of the field of view appear elongated. For astrophotography or wide-field visual observation with 2" eyepieces, using a high-quality coma corrector is essential to achieve sharp, point-like stars across the entire frame.
Why is the 12-volt fan important for the IDEAL 16's 400mm mirror?
A large 400mm mirror has significant thermal mass and can take hours to cool to the ambient night air temperature. The integrated 12 volt fan actively circulates air behind the mirror, dramatically reducing this cooldown time. This minimizes "tube currents"—thermals rising from the mirror that distort the view—allowing you to start high-magnification observing or imaging much faster.
