Image of the day

From the
ATWB Customer Gallery

Northern Cardinal

My Account

New to Astromart?

Register an account...

Need Help?

16" F/3.5 Astrograph Project

Started by hbastro, 09/10/2015 08:46AM
Posted 09/10/2015 08:46AM Opening Post
I had the good fortune, I think, of having a 16" F/3 Newtonian OTA made available. These kinds of events change everything. I have nearly completed a 12.5" F/7 field corrected Schmidt Cassegrain, this project is now on indefinite hold. I'll be building a 16" F/3.5 corrected Newtonian instead.

I received the first element of the correction system yesterday a 16.5"diameter NBK7 blank for the front objective element.

I'll post construction notes and photos during its construction if there is interest... Dave

Attached Image:

hbastro's attachment for post 59705
Posted 09/10/2015 08:46AM #1
Corrector Blank

Attached Image:

hbastro's attachment for post 149990
Posted 09/10/2015 09:02AM #2
Dave Erickson said:I'll post construction notes and photos during its construction if there is interest... Dave

Very interested! Please keep the updates coming! :-) How are you planning to figure the corrector?

~ Charlie Stevenson

8" f/5.7 String Telescope - 1st Scope Build; 2nd Place Stellafane 2016 Optical Award for Newtonians 12.5" and Smaller
10" f/4.5 Newtonian (June 2015) mirror refigured by Optic Wave Labs P-V WaveFront 1/14.24, Strehl Ratio 0.993 (Aug '15)
Criterion RV-6 seems to be circa 1973 (June 2015) [For Sale]
Celestron C8-A XLT (January 2015) [For Sale]
Celestron PowerSeeker 70AZ (Christmas 2014)
Aldrich Astronomical Society member since 2015
http://astro.charleskelleystevenson.com/