Telescopes

HOPE D60 uses a 60mm aperture, 280mm focal length, f/4.66, and a 5-element PAPO design including ED glass.

It is suitable for wide-field nebula imaging, narrowband imaging, light-pollution areas, planetary and lunar detail imaging with a short focal length, and small deep-sky targets.

Its full-frame illumination is greater than 90%.

HOPE D60 is recommended for full-frame or smaller sensors with a diagonal of 43mm or less, within its 44mm image circle.

Medium-format cameras are not recommended because their 54mm sensor diagonal exceeds the image circle and can cause strong vignetting.

HOPE D60 uses a 5-element PAPO optical design including ED glass. Confirm the required imaging train and backfocus in the official product manual or with technical support before final setup.

Use the M54 adapter when you need its built-in 2-inch filter thread for direct filter installation.

For M48, check the telescope version: the old version without RotaTilter has no filter thread, while the newer HOPE D60 version supports 2-inch filters.

Avoid overly thick optical filters and confirm the telescope version when using M48.

The GS Series Guide Scope features a 3-element flat-field Planar APO design that minimizes chromatic aberration, astigmatism, and field curvature for sharp stars and accurate guiding.

It is ideal for guiding, visual observation, and entry-level deep-sky astrophotography.

Use an air blower to remove dust. For stains, use alcohol with a lint-free swab, then use an anti-static cloth to remove residue.

Dust usually does not affect imaging. Do not disassemble the optics, because optical misalignment or coating damage caused by disassembly is not covered by warranty.