saemark30
scholastic sledgehammer
Reged: 02/21/12
|
Re: Apochromatic or Achromatic does it really matter?
[Re: PJ Anway]
#5269793 - 06/13/12 03:34 PM
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
What do you call a diffraction assisted lens code-named H-Bomb?
|
ken hubal
Pooh-Bah
Reged: 05/01/07
|
Re: Apochromatic or Achromatic does it really matter?
[Re: saemark30]
#5269901 - 06/13/12 04:47 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
I have yet to view through ANY apo that did anything better than my well corrected long focus achro!  The continued market hype behind apos is nothing more than excellent comedy! 
|
Alan French
Night Owl
Reged: 01/28/05
Loc: Upstate NY
|
Re: Apochromatic or Achromatic does it really matter?
[Re: ken hubal]
#5270038 - 06/13/12 06:25 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Quote:
I have yet to view through ANY apo that did anything better than my well corrected long focus achro! The continued market hype behind apos is nothing more than excellent comedy!
You know, it's funny, Ken. It wasn't marketing hype that started folks buying scopes made by those folks in Rockford, Illinois - it was people seeing and using them under the night sky at various star parties and conventions.
Clear skies, Alan
|
jmiele
Patron Saint?
Reged: 12/04/10
|
Re: Apochromatic or Achromatic does it really matter?
[Re: Alan French]
#5270105 - 06/13/12 07:18 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
While I agree with your logic Alan, I think the photographic benefits afforded us by Apo's was also a big contributed to their rise in popularity. There are many good long FL achromatic instruments out there as well. In the visible wavelengths anyway.
All that said, all my Apo's look best to me 
Best, Joe
|
ken svp120
Carpal Tunnel
Reged: 12/19/04
Loc: Ohio
|
Re: Apochromatic or Achromatic does it really matter?
[Re: jmiele]
#5270317 - 06/13/12 09:51 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
I'm going to add my two cents by saying that a long achro might well be corrected as well as an apo but that the nice compact package of a modern apo makes such scope truly portable...you can take it to whatever dark skies you wish with very little transport worries and get phenomenal optical performance. Or, if permanently mounted, you can put it in a smaller facility. Yes, an apchromat definitely matters for more than one reason. Can you attain the same performance from an achromat...probably...but with the same functionality? I don't think so.
|
watcher
Carpal Tunnel
Reged: 11/21/07
Loc: St. Louis, MO
|
Re: Apochromatic or Achromatic does it really matter?
[Re: ken svp120]
#5270338 - 06/13/12 10:03 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Portability and imaging have both led to the popularity of APOs. IMO if it were just the view that counted, they would never have amounted to more than the niche market that they have forced the long achro into. But the asteroid did hit, and the dinosaurs no longer rule the earth. 
|
Astropin
super member
Reged: 08/30/07
Loc: Michigan
|
Re: Apochromatic or Achromatic does it really matter?
[Re: watcher]
#5270365 - 06/13/12 10:20 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
I decided to split the difference and bought an ED doublet (most would call it a "semi-apo").
|
Alan French
Night Owl
Reged: 01/28/05
Loc: Upstate NY
|
Re: Apochromatic or Achromatic does it really matter?
[Re: Astropin]
#5270372 - 06/13/12 10:26 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
As far as long achromats go, the asteroid hit before the days of the apochromat. I think it would be fair to say that apochromats brought refractors back to life.
Clear skies, Alan
Edited by Alan French (06/13/12 10:33 PM)
|
watcher
Carpal Tunnel
Reged: 11/21/07
Loc: St. Louis, MO
|
Re: Apochromatic or Achromatic does it really matter?
[Re: Alan French]
#5270401 - 06/13/12 10:45 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Oh yeah, I keep forgetting about those mirrored things taking over way back when.  I tend to hang out here where the refractors still rule, and see my corner of the universe as "all there is".
|
Previous
Index
Next
Threaded
