Original sentence: Also the basic design has been remained almost static since its first production.Image of a Questar 3.5" telescope.In development since 1946, the Questar 3.5” has been the company's most notable product.Since the telescope is made in a small production run by a relatively small company, the economies of scale have meant that the Questar 3.5” comes with a high price tag.The Questar 3.5” entered commercial production in 1954 and almost immediately this “observatory-in-a-box“ was considered the "Rolls-Royce" of telescopes.This has led the instrument to be to criticized as being a "status symbol" that is too small and too expensive for serious astronomical use
Edited sentence: Also the basic design has been remained almost static since its first production; one can argue the success of the concept is that it has changed little while being imitated by others.And the Questar now accepts many third party eyepieces and accessories.Astrophotos by RVDB taken with a Questar 3.5" telescope.By the 1990's accessories were made available to permit the use of the telescope around the world independent of external betteries or AC current.In development since 1946, the Questar 3-1/2 has been the company's most notable product.Questar and Company Seven developed the Astro 7, a more compact and versatile alternative to the original Questar Seven.Since the telescope is made in a small production run by a relatively small company, the economies of scale have meant that the Questar comes with a high price tag.Some have criticized the 3-1/2 as being a "status symbol" that is too small and too expensive for serious astronomical use; comments coming mostly from those who have not understood the value and purpose of the Questar.The Questar 3-1/2 entered commercial production in 1954 and almost immediately this “observatory-in-a-box“ was considered the "Rolls-Royce" of telescopes.With its high performance, compact profile, and lack of periodic error a number of spectacular images are being produced by Questar owners who have mated astronomical CCD and digital SLR cameras to their Questar