For sale, 4” Borg 100ED apochromatic refractor telescope. 100 mm/f6.4 doublet with the interior covered with black felt for the best possible contrast. This telescope weighs only 5lb and has a characteristic unique to Borg telescopes: it can be dis-assembled for transportation. See picture below.
1) Borg MDX #7837 Focuser (more stable than the standard one) (value $263)
2) Precision focus wheel Borg #7838 (value $69)
3) Baffles Borg #4053 and #4054 (value $24$)
4) Two mounting rings M Borg #7080, one being modified (value $77)
5) In addition, a Baader filter adapted for the Borg tube, for solar photography only (neutral density 3.8: never use this visually!).
I am the second owner of this telescope. It has small scratches that were meticulously re-touched. The lens arrived with a fault that does not influence the image, because it is out-of-field: there is a fracture with no consequences on the periphery of the lens. Attention: the fracture is within the edge of the glass; it is not on the surface, and when you look down the tube straight on, it is out of the field of view. Look at the lower right in the lens in the second picture.
I have also added some relevant Borg documentation.
Value, new : telescope = $1720 + $433 of accessoiries = $2153
Priced for a quick sale at $1450.
You will not find a lighter 4” refractor of this quality out there at such a low price!