Astromania Bahtinov Mask Focusing Mask for Telescopes – FM60mm for a tube outer diameter (OD) from 65mm-100mm – can be mounted with the brass screws inside or outside the drawtube

The Bahtinov mask has become the preferred method of focusing a telescope, either visually or when imaging with a CCD camera, DSLR or webcam.They are an inexpensive tool which will allow you to achieve pin-sharp levels of focus, saving you time and improving your work. Simply place the mask over the front of your ‘scope, align the scope towards a … Read More

Helix Nebula Dying Star NASA Space Hubble Spitzer Telescopes 8 X 10 Color photo

Helix Nebula, Dying Star. The Mark of a Dying Star Six hundred and fifty light-years away in the constellation Aquarius, a dead star about the size of Earth, is refusing to fade away peacefully. In death, it is spewing out massive amounts of hot gas and intense ultraviolet radiation, creating a spectacular object called a “planetary nebula.” This is a … Read More

Astronomical Objects for Southern Telescopes: With an Addendum for Northern Observatories – A Handbook for Amateur Observers

Since it was first published in 1968, this reference book has enjoyed enormous popularity as a handbook for amateur observers of the southern sky. Five introductory chapters discuss briefly the various types of objects available for study. They are followed by a table and descriptions of over 1000 objects between the South Pole and 50N declination, each of which was … Read More

Astromania Bahtinov Mask Focusing Mask for Telescopes – FM160mm for a tube outer diameter (OD) from 175mm-220mm – can be mounted with the brass screws inside or outside the drawtube

The Bahtinov mask has become the preferred method of focusing a telescope, either visually or when imaging with a CCD camera, DSLR or webcam.They are an inexpensive tool which will allow you to achieve pin-sharp levels of focus, saving you time and improving your work. Simply place the mask over the front of your ‘scope, align the scope towards a … Read More

Binocular 10 x 25 ARAER Mini Binocular Night Vision Waterproof Binoculars Telescopes for Kids Adults Bird Watching

WideViews Professional Bird Watching Binoculars With 374ft Extra-wide field of view, you can observe nature and the outdoors like never before! Or, focus in on your target for brilliant HD detail from 1000 yards out! See Birds and Sport Events Up Close Fully multi-coated optics reduces light loss and glare while high-index prisms deliver crisp images with superior sharpness and … Read More

Sky & Telescope’s Star Wheel 50 North

Specially produced for Northern European and Canadian observers, this version of Sky & Telescope’s iconic planisphere shows a view more centered on the polar constellations. Grab this star wheel before you head outside at night and learn your way around the night sky. Product Features Used Book in Good Condition

40X60 Monocular Telescope Aopet Dual Focus Optical BAK4 Prism Telescope Waterproof HD View Spotting Scopes Telescopes with Tripod Holder & Cellphone Adapter for Hunting Camping Traveling Hiking

Are You Looking for A Monocular That Can See The Most HD View ?Aopet 40X60 Monocular Telescope is You Nice ChoiceSpecially designed for any outdoor enthusiastWaterproof, Dust-proof, Shock-proofUltra-Compact ,Ultra-LightweightBest Accessories for Yachting, Bird Watching, Sporting Events, Auto Racing, Golf, Concerts, Hunting ,Beach, Camping and Travelling etc**Multicoated optics offer a superior light transmission and brightness.**Dual focus function (front and back adjustable … Read More