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djedi
journeyman
Reged: 10/13/09
Posts: 7
Loc: Upstate, NY
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Hi!
Am am new to this forum, although I have been "playing" in astronimy for years.
I have a C5 scope and have had pretty good success with astrophotography through it.
I am considering trying a refractor now.
Has anyone had any experience with the Chinese Achromats being sold on ebay by a company called "DKD"?
Are these worth trying to make a scope out of or should I just purchase a decent used 5" Achromatic OTA?
Sorry, I cannot afford an Apo at this time. 
Thanks
Wolfgang
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Better enjoy the here and now- there are no guarantees afterwards!
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3459
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Hi, Wolfgang-
Welcome to the group- and BEAUTIFUL picture! I love lunar shots such as this. Can't give you any inputs on eBay refractors, but just wanted to way "welcome"- and comment on your picture. I also sent you a PM...
Again-
Welcome!
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Wes
Atlantic Beach, FL
Some bino’s from Miyauchi 5x32 Binon's up through Garrett 20x110 Signature's,
Some telescopes from a Stellarvue 80mm NHNG up through a couple of 8” reflectors…
And a wonderful 4.25" Delmarva Shiefspiegler!
Some good friends, made here on C/N.
Oh- several cats and a wonderful wife!
Anyone want a cat???? :-O
"When your work speaks for itself- Don't Interrupt" -Gamble Rogers
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sailor70623
scholastic sledgehammer
Reged: 01/12/08
Posts: 944
Loc: Ok.
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Your C5 should out perform any achro. Big difference between an Achro and an ED, and then up to an APO.
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Corornado PST
LB 16" & 12"
Z 10"
LX50 8"
8" CPC
ETX127
102&90mm MAKs
80mm Richfield APO
70mm refractor
ETX60
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dougspeterson
Pooh-Bah
Reged: 09/01/04
Posts: 1041
Loc: Murrieta, CA
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A fine achromat of moderate to long focal ratio will outperform your C5, which has a nearly 40% secondary obstruction. I am speaking from experience.
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18" Dob
12" SCT
8" TMB F6 + Chromacor
6" F6 APM/LZOS Fluorite triplet, 32", 32lbs
2ea. 6mm singlets, one blind
"--Granted, that's a worse case scenario. The destruction might in fact be ... limited to our own galaxy."
Edited by dougspeterson (10/17/09 07:16 PM)
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