Yesterday I sold my C8 OTA and bought a used Cave Astrola 8" f/7 Newt on their "premium" heavy duty pedestal mount. It's in great condition except for the mirror coatings (oxidized) and some dust. I cleaned up the dust and washed the mirrors, did a quickie job of collimation with the Cheshire, then waited for the clouds to part... and waited... and waited...
Finally at 10:30pm, a few small sucker holes opened up. I rolled it out of my garage onto the sidewalk. I just wanted to get a look at some stars so that I could get a sense of the optical quality of the scope. Back in the early 80's, I had used a 6" Cave at the school where I taught and had been very impressed. Would this Cave live up to the expectations created by that earlier experience?
The seeing was pretty good, much to my surprise. I aimed the scope at Rigel at 32x and the image was very good -- no surprise at that power. I then put in my 4.8mm Nagler, and the image was tauntingly good -- but the clouds quickly swallowed up Rigel. Darn.
A light mist began coming down, so I rolled the scope back under my garage door and waited. My hopes were diminishing.
I noticed a large and expanding sucker hole opening up upwind to the west. It
kept expanding and expanding -- after several minutes, it reached Sirius, so I
aimed the scope at M41, one of my favorite oc's. Beautiful at 32x, it nearly
filled the limited field on my 1.25" 45mm Plossl (kinda like looking through a
tube!
When I looked up again, nearly the entire southern sky up to the equator had
cleared! I quickly aimed the scope at M42 and the Trapezium, one of my
favorite objects. At 32x, the view was good -- but not impressive. I popped
in the 4.8mm Nagler, and the view at 297x was good but over-magnified. Still,
the stellar images showed textbook diffraction patterns. My hopes for this
scope were increasing.
I then popped in my 9mm Nagler and had to go find my socks -- they were blown
off!
After getting lost in that beauty for about ten minutes, I decided to hunt for
Saturn, but unfortunately it was too low by then (11:00pm) and lost in the
clouds to the west. Furthermore, my fifteen minutes of reprieve from the
clouds were over -- a vast bank was quickly rolling in. I took a last look at
M42 and the Trap, then watched as it faded from view behind the clouds.
My hopes are hight for this new scope. I can't wait to see what it does with
new coatings on the mirrors and a careful job of collimation. Yes!