Does anyone have a reference for fast astrograph designs? Faster than F/3 for a 16803 CCD at between 40” and 60” focal length… I am considering making a larger astrograph…
Fast astrographs design references desired
Started by hbastro, 10/02/2012 10:28PM
Posted 10/02/2012 10:28PM
Opening Post
Posted 10/03/2012 06:34PM
#1
What type of astrographic telescope? SCT, Newt, Refractor, Houghton? Try looking here: http://www.telescope-optics.net/ You might be able to get some design specs here. I hope this is helpful.
Keith
Keith
Scopejunkie
40 year old restored C14 with recirculating cooling w/Skywatcher DOB GOTO Conversion (CPC14)
Synscan DOB mounted Sky-Watcher Evostar 150mm/1200mm ED Refractor
"Rescued" Craig's List Orion 120mm/1000mm Refractor
USAF Vet
Posted 10/04/2012 04:32PM
#3
Google Riccardi-Honders. Seems applicable to ATM construction.
Astro-Physics makes one 12" f/3.8
Astro-Physics makes one 12" f/3.8
Dave Erickson said:
Does anyone have a reference for fast astrograph designs? Faster than F/3 for a 16803 CCD at between 40� and 60� focal length… I am considering making a larger astrograph…
Posted 10/16/2012 04:51PM
#4
Thanks for the support!
These instruments are never simple, I had hoped to find a simpler solution but have not.
I have completed the design of a 16" F/2.6 astrograph that fits in the 6' dome on the AP1200 mount. It is substantially different from the 8" F/2.6 I made 8 years ago that is in the dome now. I have extra glass and the tooling from a 12" Schmidt camera I made for a friend in the 70's. So I think I'll start there and make a 12" (6)element F/2.6 Schmidt Newtonian with 4 aspheric surfaces, as a proof of concept. I have started to post progress at www.hbastro.com.
These instruments are never simple, I had hoped to find a simpler solution but have not.
I have completed the design of a 16" F/2.6 astrograph that fits in the 6' dome on the AP1200 mount. It is substantially different from the 8" F/2.6 I made 8 years ago that is in the dome now. I have extra glass and the tooling from a 12" Schmidt camera I made for a friend in the 70's. So I think I'll start there and make a 12" (6)element F/2.6 Schmidt Newtonian with 4 aspheric surfaces, as a proof of concept. I have started to post progress at www.hbastro.com.
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