|Coupling Port Ring, 2.9" to 2.9" back-to-back flange, Item
This 2.9" back-to-back flanged coupling ring is primarily designed to couple a Sidewinder's input to a Zerotator's output (as part of the super stack, etc.), via the 3 set screws that are opposed by 120 degrees around the edge of either product. Or any other similar 2.9" format application. This coupling ring consumes about 3/8" of profile. Usually this type of 2.9" coupling ring has a shorter 1/8" profile. However, this extra 1/4" of profile is necessary for clearance between the Sidewinder and Zerotator.
|Coupling Port Ring, 2.7" to 2.9" back-to-back flange, Item
This back-to-back flanged coupling adapter will allow you to couple a (discontinued) MicroGlide focuser, with it's 2.7" docking format, to the output of a Sidewinder, Targetron or Zerotator (2.9" format), via the three set screws that are opposed by 120 degrees around the output of the three items above. The profile of the coupling is about 1/8-inch.
|Coupling Port Ring, 3.1" to 2.9" back-to-back flange, Item
This back-to-back flanged coupling adapter will allow you to couple a Sidewinder, Targetron or Zerotator to the output [moving tube] of your 3" ALPHA or OMEGATOAD, via the three set screws that are opposed by 120 degrees around the edge of the TOADLOADER's moving tube output. The profile of the coupling is about 1/8-inch.
|Extension Flange, 3" Outside Diameter for Targetron/Sidewinder rear
This extension flange has a male 2.9" outside diameter circular dovetail flange on one end, and a 2.9" inside diameter on the other. It will extend the rear port of the Targetron to accommodate special reverse parfocusing requirements. Normal installations should not require this extension, but in some circumstances, this may be the only solution. It should not be used unless necessary because it extends your profile, which is a NO-NO! However, if you can spare the profile, and need this extension to address a reverse parfocusing issue, then this extension flange may be what you need.
1" Extension Flange (shown), Item EXT1: $79
2" Extension Flange, Item EXT2: $89