Under $500

Features Great for indoor or outdoor play Eye-catching school bus graphics Split flap main entrance plus a circular flap opening for crawl-throug...

Description Built-in Self Centering Adapter No more loose fitting laser collimators! Our patented Self-Centering Adapter cleverly eliminates the s...

Description Built-in Self Centering AdapterNo more loose fitting laser collimators! Our patented Self-Centering Adapter cleverly eliminates the sl...

Description One of the very best laser collimators on the market for your Newtonian telescope is the SCA Laser Collimator with Crosshair from HOTE...

Description Made to meet a sportsman's needs, Bresser HS binoculars combine superior Bresser optics and high quality features in a streamlined pac...

Supplemental 2.2 lb. Counterweight for iEXOS Mounts. Includes locking knob. Note: This is an all-white counterweight rather than the back with sil...

Supplemental 2.2 lb. Counterweight for iEXOS Mounts. Includes locking knob.CA Residents: Prop 65 WARNING(S)

Description A saddle plate is not the most exciting astronomical accessory in the world, but it is one of the most important when it comes to the ...

Experience and control the PMC-Eight GOTO System and make astrophotographs from anywhere in the world, by live Internet access to the Mark Slade R...

Genuine Losmandy-brand 11 lb. Counterweight for Losmandy GM-8, G-9, G-11 and TITAN Mounts, finished in durable metal-gray hammertone finish. Includ...

Description This Losmandy 14" Universal Dovetail Plate for Refractors can be used as a universal dovetail plate for Tele Vue, Parks, Takahashi, Qu...

Description This Losmandy 7" Short Universal Dovetail Plate for Refractors can be used as a universal dovetail plate for Tele Vue, Parks, Takahash...

Losmandy D-Series Dovetail Plate for Astrophysics Refractors Losmandy Dovetail Plates set the standard in strength and rigidity for mounting telesc...

FHD / Meade field tripod adapter 6.0" diameter, 4.0" high. Inside machined to fit G-11 and GM 8 mounts. Tube has 1/2" thick bottom with 1/2" hole i...

Description A saddle plate is not the most exciting astronomical accessory in the world, but it is one of the most important when it comes to the ...

Description Round Up Sharp, Clear Views with Bresser Montana Waterproof Binoculars! ED glass, super high reflection coatings and a lightweight but...

Features 10x magnification 25mm lens diameter 97ft field of view at 1000 yards Carrying strap, lens cloth and case included Description The Na...

Features Water-resistant 10x magnification 25mm lens diameter 97ft field of view at 1000 yards Case, strap and cleaning cloth Description The ...

Description The National Geographic 10x25 monocular is ideal for spontaneous observations. Whether for hiking, sport events, theater or concerts -...

Features Magnification: 2.5X / 5X Extra Bright LED Illumination Lens Adjustable in 5 Angles Fold-Out Pedestal High grade biconvex 3.5" (90mm) acr...

Features IR illumination Large Focus Wheel 25mm objective & Adjustable Illumination 3 power magnification 3 AA Batteries included for operati...

Features Study specimens in stages using magnification powers ranging from 40x to 1600x. 3.5" LCD screen provides crisp, colorful specimen views ...

Description Explore the intricate contours of the lunar terrain or visit the brilliant blue-white stars of the Pleiades Cluster with the National ...

Features 6x magnification Rubber armor for a safe grip Sturdy body These 6x magnification children’s binoculars make a perfect exploration compan...

Features 32mm aperture brings in lots of light so you can see more. 8x magnification makes objects appear eight times larger. Great tool for both...

Features Nautic Binoculars and Monoculars are as the name suggests specially designed for use on and around water Waterproof, 122 mm Field of Vie...

Explore Scientific Nebula Filter 2.0" UHC Range from 458nm to 508nm with peak at 488nm. Transmission 96.7% UHC - This is an ultra-high contrast nar...

The neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradi...

Description The BRESSER NightSpy is a monocular generation 1 night vision device with an integrated infrared illuminator and a tripod adapter thre...

Features Handy night vision device of the first generation for long time observations in low light conditions or in total darkness 5x magnificati...

Features Small travel binoculars, ideal also for eyeglass wearers Waterproof and nitrogen purged / true colour images Phase coating for high cont...

Description The new Pirsch spotting scopes are especially for the price-conscious observer and hunter. Equipped with fully multi-coated, big 80mm ...

Features Small travel binoculars, ideal also for eyeglass wearers Waterproof and nitrogen purged / true color images Phase coating for high contr...

Description A tripod adapter is used to attach your binoculars to a tripod. Suitable for binoculars weighing more than 800 g and which have a stan...

Our Polytech Polo shirt is packed with high-tech features. It's quick to dry and anti-static for no-cling comfort. UPF 50 protection shields you fr...

Domes and accessories are made to order, approximate wait time is 12 Weeks For special orders contact Customer Service at 866-252-3811*Freight incl...

Domes and accessories are made to order, approximate wait time is 12 Weeks For special orders contact Customer Service at 866-252-3811*Freight incl...

Domes and accessories are made to order, approximate wait time is 12 Weeks For special orders contact Customer Service at 866-252-3811*Freight incl...

Domes and accessories are made to order, approximate wait time is 12 Weeks For special orders contact Customer Service at 866-252-3811*Freight incl...

Features PoleMaster has the following advantages: Speed and convenience: You can make a precision polar alignment even when you can’t see the pol...

Description When the pixels of a guide camera becomes small and QE becomes high, you may not need a big guide scope, smaller pixels can detect the...

This adapter fits the Losmandy G-11 and the ES-G11 with PMC-8. QHY CCD PoleMaster - High Precision, Easy to Use Electric Polar Scope Good polar ...

Description This adapter works on the EXOS2GT; EXOS2GT w/PMC-8; CGEM; and EQ6.  QHY CCD PoleMaster - High Precision, Easy to Use Electric Polar S...

Description View ultra faint stars on video in real time using the QHY5III290 USB 3.0 series camera with the Sony IMX290 STARVIS Exmor R back illu...

Features The QHY5III462C has a Back-illuminated sensor - twice as sensitive as the similar sized front illuminated color sensors like the 290. Th...

Description Medium size. The QHYCFW3M supports a carousel holding five 2-inch mounted or 50mm unmounted filters or a carousel holding seven 36mm u...

Attach the SLR Prime Focus Adapter to QuikAdapt instead of an eyepiece for prime focus astrophotography using digital and film SLR cameras with cam...

Features QuikAdapt adjusts in all three directions (Up/down, left/right, in/out) independently. Rigid 1/4 inch thick aluminum plate constructi...