I spent most of the morning digging this orange 8 out of hobbyland.*
The reason why is I'm beginning to wonder if special coatings and/or Starbright, Starbright XLT
darken the view.
These coatings are mostly on the corrector but I think the Starbright series are also enhanced
coatings on the mirrors too.
This actually all started with my ex Unitron 150 with the green multi-coated objective. My Edmund
4 was way brighter with it's single layer coating. Since then I've been skeptical about these multi
I accept multi coatings as being superior for eyepieces, binoculars, and telescopes used during
the daytime. I'm not so sure about astronomical observation.
I'll see for myself. M57 the ring nebula is my test. I'll compare plain Jane uncoated orange 8 with
orange 8 'special coatings', and black tube 8 Starbright coating.
*Hobbyland is the second floor of our house. I have the north half my wife has the south. The
dormer area in the middle is neutral territory. I make sawdust in the north and it smells like rotting
pulp magazines so my wife stays in the south.
This C8 is not my first but it is the first one I finally truly learned just how good a SCT can be.
With the help of my senior optician friend Pierre he hammered into me the importance of precision.
Before this I didn't understand, and it didn't make sense to me why everything needed to be so
perfect, and if it wasn't perfect you were going to be unhappy and look at other designs, which is
what I did.
With this C8 for some reason I gave it everything I had to make sure everything was perfect
and it paid off royally. I've been a CAT fan ever since.
Edited by clamchip, 17 September 2021 - 01:33 PM.