Explore Scientific FirstLight 152mm Doublet Refractor - Discontinued

This telescope is ideal for targets like the Andromeda Galaxy (M31). Its wide-field design allows you to frame the entire galaxy, including its faint outer arms and satellite galaxies M32 and M110, within a single eyepiece view. The fully multi-coated optics help enhance the contrast between the galaxy's core and the dark dust lanes.

Yes, it's a great choice for basic wide-field astrophotography. The hexagonal focuser provides a stable platform for DSLRs or small astronomy cameras. It excels at capturing large emission nebulae, open star clusters, and other expansive deep-sky objects that fit well within its field of view.

A doublet lens uses two glass elements to correct for chromatic aberration (color fringing). As an achromatic refractor, the FirstLight delivers sharp, high-contrast views, especially on deep-sky objects. On extremely bright targets like Venus or Sirius, some minor purple fringing may be visible, which is a normal trade-off for this optical design.

While this refractor's primary strength is wide-field deep-sky observing, it is certainly capable of providing pleasing views of planets. You will be able to see Jupiter's main cloud bands and its Galilean moons, as well as Saturn's rings. However, for high-magnification planetary detail, a telescope with a longer focal length is typically preferred.

You will need a sturdy telescope mount to properly support this optical tube assembly. For visual use, a heavy-duty alt-azimuth mount will work well. For astrophotography, a German equatorial mount with GoTo capability is highly recommended to ensure accurate tracking of celestial objects across the sky.

The hexagonal focuser provides superior stability and rigidity compared to many standard focusers. This design minimizes flex and wobble, which is especially important when using heavier eyepieces or a camera. It ensures that once you achieve focus, it remains sharp and stable throughout your observing or imaging session.