Product Reviews
- Reviews
- Questions
Extension to focus
With the 3.5 Televue extension, one can eliminate the diagonals for a Williams Optics 132/f7 and the Antares 4 inch f13 refractors. A 2.6 inch ( effective 2 inch )does not. For planatery views, straight on visual viewing is still a most pleasant viewing experience alternative. Have not tried with a Binoviewer as yet.