The "HD" versions of Swarovski's scopes feature elements with extra-low dispersion glass. This provides an even more remarkable image, with better edge resolution. In particular, color fringing is nearly eliminated. Subjects with intricate patterns will have crisper delineation, something enthusiastic birders will greatly appreciate.

The ATS & STS series spotting scopes have a focal length of 460mm. If you're using conventional 1.25" astronomy eyepieces with the optional #6290307A Astronomy Eyepiece Adapter, divide 460mm by the focal length of your eyepiece to determine the effective magnification.

Rotating tripod collar with detented click stops
Retractable lenshood
Aiming sight assists in locating subject faster
Operating range from -4 to 131A�X F (-20 to 55A�X C)
Both 1/4"-20 & 3/8"-16 tripod threads
Both digital & 35mm camera adapters to convert your scope to a telephoto lens
Large focusing barrel with oversized grooves for fine control
Swarovski's microthin coatings produce optimum light transmission and resolution
Environmentally friendly lead and arsenic free glass
Accepts 82mm filters