I was looking at the Orion site considering the purchase of an 80mm ED scope and could not help but notice the cost/aperture of the achros. For the price of the 80mm APO you can purchase a really large achro on the order of 4.7". I know that the APO will provide color free images - but with the exception of the planets not much shows color anyway (unless you are imaging). Are there advantages favoring the APO refractor that compensate for it's decreased light grasp (only 80mm). Are there advantages using an APO on DSOs and nebulas? I like what I read about apochromats, but something in my gut says go for the aperture. Any thoughts?
Orion APO vs Achro
Started by Peter10, 08/27/2003 12:42AM
Posted 08/27/2003 12:42AM
Opening Post
Posted 08/27/2003 01:33AM
#1
It's interesting that no one has commented on the fact that Orion is also selling an F11 80mm achromatic for just $120. The longer focal length should do much to reduce color fringing and it's a lot cheaper than the APO.
As regards a larger achro, from what I've read on this site, I think everyone is waiting and praying that Orion will offer a larger, competitively priced APO later this year!
As regards a larger achro, from what I've read on this site, I think everyone is waiting and praying that Orion will offer a larger, competitively priced APO later this year!
Posted 08/27/2003 02:23AM
#2
Hey Pete,
I've got an Orion ED-80 and an Astroview 100.
The Astroview gathers more light, but the ED-80 does a better job with the light it gathers. The optics in the 80 are just better corrected, so I enjoy the view more.
When I really want to gather light, I pull out a 9.25.
Cheers,
Steve
I've got an Orion ED-80 and an Astroview 100.
The Astroview gathers more light, but the ED-80 does a better job with the light it gathers. The optics in the 80 are just better corrected, so I enjoy the view more.
When I really want to gather light, I pull out a 9.25.
Cheers,
Steve
Posted 08/27/2003 01:17PM
#3
>>Are there advantages using an APO on DSOs and nebulas? I like what I read about apochromats, but something in my gut says go for the aperture. Any thoughts?
I think scopes like the Orion 80ED are companions to larger scopes or a portable travel scopes. If you are looking for a single scope solution then a larger refractor like the 120mm F8.3 will give you better overall performance for you dollar. But it is a big scope and takes a serious mount, so it really fulfills a different role.
IF you really want the most bang for your money, then a reflector, an 8 inch Newtonian will go deeper, be brighter, have no false color and show more detail.
My personal view is that 80mm is pretty small to be an only scope, it is best at wide field views.
jon
I think scopes like the Orion 80ED are companions to larger scopes or a portable travel scopes. If you are looking for a single scope solution then a larger refractor like the 120mm F8.3 will give you better overall performance for you dollar. But it is a big scope and takes a serious mount, so it really fulfills a different role.
IF you really want the most bang for your money, then a reflector, an 8 inch Newtonian will go deeper, be brighter, have no false color and show more detail.
My personal view is that 80mm is pretty small to be an only scope, it is best at wide field views.
jon
Funding Member
