OTA contains Celestron's premium StarBright XLT coatings Mount holds up to 55 lb load capacity Spring-loaded brass worm wheel, stainless steel worm gear Two all-new dovetail clamping knobs +20° of additional tracking past the meridian OTA contains Celestron's premium StarBright XLT coatings Mount holds up to 55 lb load capacity Spring-loaded brass worm wheel, stainless steel worm gear Two all-new dovetail clamping knobs +20° of additional tracking past the meridian Internal cabling for worry-free remote operation Two internal optical sensors Control software for remote astroimaging Aux accessory ports and autoguider port 2" stainless steel tripod legs