Posts Made By: Stewart Valentine

Originally Posted by John Huggins

In the promo materials for the Mewlon 250CRS and 300CRS we see the following...

Takahashi’s CRS series of Mewlon telescopes leads the industry in advanced design and optical quality.  At their heart is the Dall-Kirkham Cassegrain telescope design, coupled with a corrector that provides Ritchey–Chrétien like performance.  With the CRS series, Takahashi has added a 3-element corrector plate made from ED glass, converting the telescope to a flat field instrument for imaging and visual observation.

Emphasis added.

The photos are always of an angle to not show much of the optical train.

Questions:

• How big is this corrector "plate?"
• Where is the corrector "plate" in the optical path?
• Many thanks for any enlightenment.

John

Originally Posted by John Arnold

Hello community! I’m new here.The reason I joined astromart is that the School my wife and her colleagues started was just donated this Brandt to use the funds if sold for the school. I know nothing about the instrument other than the owner has taken extreme care of it. I’m assuming there are many things to find out about it but I don’t know what I don’t know at this point. If anyone can point me in the right direction as far as what specs would need to be known and what sort of avenue to use to try and sell would be fantastic.

Thanks so much,
John