Founder Optics 9 mm LER Alien 1.25" Eyepiece - A-LER-9 Skywatcher OTA if you are using an

if you are using an 8” SCT at prime focus

Because this mount is a Dobsonian design but it incorporates two DC Servo motors

It can expand over time and any ExploreStars implementation can easily be updated by downloading a fresh copy of the Celestial Database

Orders placed on the weekend will be shipped Monday

8 mm) Focal Length: 30 mm (1

Founder Optics 9 mm LER Alien 1.25" Eyepiece - A-LER-9 Skywatcher OTA if you are using anAlien 9 mm Long Eye Relief Eyepiece Wow, Alien eyepieces are out of this world! With a very comfortable 20 mm of eye relief across the series, Alien eyepieces are a joy to view through, even if you need to wear glasses while observing! The 9mm Alien eyepiece is parfocal with all other eyepieces in the Alien line, which means you will not need to re focus when you change eyepieces for a different magnification. The cool looking eyepiece body is made of