I just recently purchased a GSO 200mm f5 newtonian telescope from Agena the company who has replaced OPT in California who closed their doors and sold their inventory. They sell most items that OPT was selling. This telescope is sold under different names but the Agena GSO seems to be the best. They claim each telescope is throughly checked out in appearance, mechanically and the mirror throughly checked out. They even include a certificate showing this.
GSO seemed to successfully address the problems with this line. The dust cap was almost impossible to remove without forcing it off because it was so tight when pushed in. It now is so soft and and easy placing it in and taken it off the tube. The rings were so tight that even if you loosen the rings it was still hard to rotate or move up and down without completely unlocking the rings. Now you can rotate and move up and down much easier. It seemed that the inside tube surface was matte and powdery and if you touched the finish that some black stuff would come off on many of the models. Now the finish is still matte but it is absolutely silky smooth and when you touch it nothing comes off. The collimation was a little off but took seconds to get a perfect red dot in the center of the secondary mirror and seconds to collimate the primary with a quality laser aided by installing bobs knobs. The actual collimation screws were actual Philip screws and not that tiny screws that most reflectors use. The bob knobs just made it even more easier.
Observing was fantastic. Perfect looking stars and very sharp especially the moon which was razor sharp as well as Jupiter, Saturn, Uranus and Venus. The double cluster was bright and sharp along with M42 which i observed with high power. The whole field of view was greenish billowing hazy smoke.
The white gloss tube is well constructed and a flawless finish. Two speed focuser works great. Nice and smooth. They had a limited amount and I bought the last one available. $589.00 no tax and free shipping.
I just want to add that last night at dawn I saw the three brightest objects besides the moon in the night sky. In the eastern sky was the beautiful brilliant crescent phase the morning star Venus. In the southern sky was Sirius and in the western sky was Jupiter. Sirius paled in comparison to Jupiter and especially Venus. Combined with Orion and Auriga there we’re so many bright stars out.
Edited by Olympian, 21 September 2023 - 02:28 PM.