Orion Express 80mm Refractor OTA

asimov (John) · #1 30-09-2005, 03:42 PM

Hi guys.

Can anyone comment on this scope?

This is just a shorter FL version of the orion ED80 isn't it?

How do you rate the express up against the ED80 ?

https://www.bintelshop.com.au/welcome.htm

davidpretorius · #2 30-09-2005, 04:11 PM

i can comment, but it will be silly, so i won't!

would this be a guide scope for your big blue?

atalas · #3 30-09-2005, 04:15 PM

I doubt It mate ! this shorty is not an apo , gee looks just like a williams optics scope ah !
You know when you can get an ED80 for the same price which is an apo,why would you bother with an acro ? still everybody to there own I guess.

Louie

asimov (John) · #4 30-09-2005, 04:18 PM

Eh?? I thought it stated it was an APO! I better go re-read the add!

asimov (John) · #5 30-09-2005, 04:33 PM

Ok..it says SEMI-APO...Please can someone define 'semi-apo??'

atalas · #6 30-09-2005, 04:47 PM

Thats easy ! an achromatic doublet in a fancy OTA

Louie

asimov (John) · #7 30-09-2005, 04:54 PM

After reading a few reviews on it....even the owners are confused!

I'm not really in the position to buy another scope anyway...I was just wondering.

Can't learn if you don't ask hey!?

C'mon Dave? throw your SILLY comment in here mate! All STUPID comments R welcome!!

mickoking · #8 30-09-2005, 05:08 PM

Quote:

Originally Posted by asimov

Ok..it says SEMI-APO...Please can someone define 'semi-apo??'

When I was doing my Photographic course in the RAAF achromatic was defined as a lens that corrects(focuses) light in two wavelengths. Apochromatic lens corrected (focuses) light in 3 wavelengths. I believe semi apo is simply an achromat that uses ED glass.

By the way my next scope will be an Orion APO to replace my 80mm konus short tube (which I will donate to my daughters primary school).

asimov (John) · #9 30-09-2005, 05:12 PM

Ta Micko...When are you coming back from China...enjoying ur time there?

mickoking · #10 30-09-2005, 05:23 PM

Asimov mate,

Having a great time but I am missing my wife n Kid. I will be back on the 9th of october.

h0ughy (David) · #11 26-11-2005, 05:05 PM

Asimov, look here http://www.iceinspace.com.au/forum/s...6792#post66792

I just bought one

Starkler (Geoff) · #12 26-11-2005, 06:45 PM

Quote:

Originally Posted by atalas

You know when you can get an ED80 for the same price which is an apo,why would you bother with an acro ? still everybody to there own I guess.

You get a better quality of build and a prettier scope. The ed80 although it comes with a crayford, its still a typical Synta product in that regard.