Some little things to improve your imaging and observing.

We have added some new economically-priced accessories from Astro-Tech to make yourimaging and collimation easier. Here they are:

Astro-Tech laser collimator, #ATLC, $59.95: Makes collimating yourDobsonian or Newtonian reflector astrograph in the field faster and easier. This1.25” laser collimator has variable brightness levels and comes with an adapterfor 2” focusers at no extra charge (others charge extra for a 2” adapter).

Astro-Tech Cheshire/sight tube collimator, #ATCOLL, $34.95: Thishandy tool lets you align both the primary and diagonal mirrors of your Dob or Newtonianreflector much more accurately than the little sighting cap supplied with many reflectors.

Astro-Tech 50mm photoguide scope, #AT50GS, $119.95: Today’s inexpensiveCCD autoguiders don’t need a big guidescope to give you pin-point stars during longexposure deep space imaging. A small, fast focal ratio guidescope like this 50mmAstro-Tech will do the job without costing you an arm and a leg and adding too muchweight to your system. Includes helical focuser and mounting rings (rings are optionalwith many other guidescopes).

Astro-Tech 7.5mm T-thread extension ring, #AT427, $17.95: ThisT-thread extension ring adds 7.5mm of spacing between your scope and camera if neededto place your camera at the scope’s focal plane.

Astro-Tech 15mm T-thread extension ring, #AT4215, $19.95: ThisT-thread extension ring adds 15mm of spacing between your scope and camera if neededto place your camera at the scope’s focal plane.

Astro-Tech 1.25” variable camera adapter, #ATVCA, $44.95: Longon back-order from other manufacturers, this 1.25” variable camera adapter willlet you do both prime focus and high magnification eyepiece projection planetaryimaging with virtually any telescope.



. . . our 35th year