Top features: - Two eyepieces increase magnification range - Filters let you see more complex structures - Case and cleaning cloth included Two eyepiecesThe Celestron 94307-CGL Astromaster Accessory Kit is designed to help you get more from your telescope. Both the eyepieces are fully coated, improving the light transmission for clear images, and providing protection for the optics.Use the 15 mm eyepiece for medium magnification, ideal when observing deep sky objects - the 6 mm eyepiece is perfect for high magnifications, to bring out all the details of the Moon and planets.The two Barlow lenses help to double to magnification of eyepieces. Insert it between the eyepiece and the telescope and you'll get a magnification of 7.5 mm from the 15mm optic, or 3 mm from the 6 mm.FiltersThere's three filters included with the Astromaster Accessory Kit. The 80A is a medium-blue filter, used to enhance the contrast of things like the cloud belts on Jupiter and the polar ice caps on Saturn.The 25 filter is a deep red filter, a great choice for defining the polar ice caps on Mars. This filter blocks quite a lot of the light that comes through your telescope, so you get the best results from bright objects.The Moon filter is usually one of the first additions to an amateur astronomers' kit. That's because it helps block out some of the light from the Moon, so you can pick out more details as you observe it. You can try it out on Venus too, because it will help you see the planet's phases.Case and cleaning clothThe micro-fibre cleaning cloth will help to keep eyepieces clean without leaving any residue. When everything is spotless, pack it all away into the black hard-plastic carry case. There are die-cut foam slots inside to help protect and cushion your accessories, which will help keep them looking and performing like new.