Swarovski ME 1.7X
Without sacrificing any clarity or light at long distance the Swarovski ME 1.7 is the perfect addition to your STX/ATX or BTX eyepiece.
STX/ATX 85mm body 25-60 power to 42.5-102 power.
STX/ATX 95mm body 30-70 power to 50-120 power.
BTX with 65/85mm body 30 power to 50 power.
BTX with 95mm body 35 power to 60 power.