Image of the day

From the
ATWB Customer Gallery

Antares Region

My Account

New to Astromart?

Register an account...

Need Help?

Having so much fun.........

Started by Greg Shaffer, 03/28/2015 02:16PM
Posted 03/28/2015 02:16PM | Edited 03/28/2015 02:43PM Opening Post
While building the 8" f/16 refractor I couldn't resist starting another scope project I have had sitting around for 2 or 3 years. A Newtonian with a "Mark Harry" figured 6" f/4.5 mirror.

I had originally planned to build it as a truss design to match my 20" Dob and mount it on my 20" mirrorbox as a large finder.

I have had all of the stuff in the pic laying around for going on 3 years now......

Attached Image:

Greg Shaffer's attachment for post 59257

Dont Let Trump Cheat!! Demand Voter ID Now!
20" MidnighTelescopes f/5
8" f/16 Muffoletto Achro
Meade 6" AR6 f/8.0 Achro
Celestron C11
Parallax PI250 10" F/5 Newt
Vixen FL102S,NA140SS,R200SS
80mm Stellarvue Nighthawk with WO APOupgrade lens, 90mm f/16.67 Parallax Achro
LXD75/LX200, Mini-tower, GP-DX, CG5 ASGT, LXD650, GM-8, G11, GM-100, GM-150EX, GM-200 and a Gemini G40
4" portable AP convertable 44" or 70" pier
Stellarvue M7 Alt-Az, TSL7 Pier/Tripod
12.5" f/5 MidnighTelescopes DOB Swayze optics
Statham GA
Posted 03/28/2015 02:19PM #1
I decided to build it using a 8x36" .064 tube from Hastings Irrigation with rolled ends.



Attached Image:

Greg Shaffer's attachment for post 149488

Dont Let Trump Cheat!! Demand Voter ID Now!
20" MidnighTelescopes f/5
8" f/16 Muffoletto Achro
Meade 6" AR6 f/8.0 Achro
Celestron C11
Parallax PI250 10" F/5 Newt
Vixen FL102S,NA140SS,R200SS
80mm Stellarvue Nighthawk with WO APOupgrade lens, 90mm f/16.67 Parallax Achro
LXD75/LX200, Mini-tower, GP-DX, CG5 ASGT, LXD650, GM-8, G11, GM-100, GM-150EX, GM-200 and a Gemini G40
4" portable AP convertable 44" or 70" pier
Stellarvue M7 Alt-Az, TSL7 Pier/Tripod
12.5" f/5 MidnighTelescopes DOB Swayze optics
Statham GA
Posted 03/31/2015 09:59AM #2
My two ongoing scope builds led me to investigating the benefits of various baffling, flocking, painting methods for the inside of the tubes and I ran across the following semi-scientific investigation of the reflectivity of various methods of keeping spurious light out of the EP.....

Some rather surprising info came to light as a result.....

http://www.cloudynights.com/page/articles/cat/articles/observing-skills/flocking-materials-test-stray-light-reduction-r82

Dont Let Trump Cheat!! Demand Voter ID Now!
20" MidnighTelescopes f/5
8" f/16 Muffoletto Achro
Meade 6" AR6 f/8.0 Achro
Celestron C11
Parallax PI250 10" F/5 Newt
Vixen FL102S,NA140SS,R200SS
80mm Stellarvue Nighthawk with WO APOupgrade lens, 90mm f/16.67 Parallax Achro
LXD75/LX200, Mini-tower, GP-DX, CG5 ASGT, LXD650, GM-8, G11, GM-100, GM-150EX, GM-200 and a Gemini G40
4" portable AP convertable 44" or 70" pier
Stellarvue M7 Alt-Az, TSL7 Pier/Tripod
12.5" f/5 MidnighTelescopes DOB Swayze optics
Statham GA