SkyMentor 6-Piece ND Filter Kit with Aluminum Case - 1.25" - TA191 Planispheres With the optical tube assembly

With the optical tube assembly of the CGEM II 1100 weighing only 27

Eye Relief:  20 mm - 18 mm

The Omni 56 mm eyepiece from Celestron comes with a black painted internal barrel and baffles to cut down on internal light reflection for a high-contrast viewing experience

Flat field technology ensures level

A wide waffle-patterned rubber grip ring gives an extra measure of secure handling

SkyMentor 6-Piece ND Filter Kit with Aluminum Case - 1.25" - TA191 Planispheres With the optical tube assemblySkyMentor 6 Piece ND Filter Kit with Case 1. 25" These Neutral Density(ND) filters are suitable for 1. 25 inch eyepieces. These filters can reduce the overall brightness of the moon's surface, so you can see more details and surface features of the moon with your telescope. There are 6 different strengths: ND OPTICAL DENSITY F STOP REDUCTION TRANSMITTANCE % ND2 0. 3 1 STOPS 50% ND4 0. 6 2 STOPS 25% ND8 0. 9 3 STOPS 12. 5% ND16 1. 2 4 STOPS 6. 25% ND32