Questar 7 vs AP 155

Having never had the opportunity to look through a Questar 7 much less
see one in person I am wondering how it would compare to the views
through an AP 155 f/7 or similar 6" apo used for planetary or lunar
observing? Is the Q 7 the equal of, better than or not up to a 6" apo?
This is assuming the Q has BB coatings and all reflective coatings on
mirrors are like new. Anyone ever had the chance to make this
comparison or have any thoughts on this?

Subject: Questar 7 vs AP 155
From: (Mike Kester)
Date: 9/4/03 2:37 PM Pacific Daylight Time
Message-id:

Having never had the opportunity to look through a Questar 7 much less
see one in person I am wondering how it would compare to the views
through an AP 155 f/7 or similar 6" apo used for planetary or lunar
observing? Is the Q 7 the equal of, better than or not up to a 6" apo?
This is assuming the Q has BB coatings and all reflective coatings on
mirrors are like new. Anyone ever had the chance to make this
comparison or have any thoughts on this?
*********************
I had a old 70's Q-7!
And it wont compare to a AP, TMB or other well built 6" APO.
The Q-7 seemed kinda dim for a 7" scope, plus if you live up north, cool down
can be a problem. My Q-7 had sharp optics, and was good on the moon and
planets, but compared to a 6" APO it had no chance!

PLus the size of Q-7 is kinda big, about the size of a fork mounted C-8.

Price for price, i say the APO wins hands down...

Chas P.

PLus the size of Q-7 is kinda big, about the size of a fork mounted C-8.

Hi Chas:

Kinda big? What do you think you're gonna put an AP155 on? A CG3?! ;-)

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers!
Goto http://members.aol.com/RMOLLISE/index.html

"Mike Kester" wrote in message
om...
Having never had the opportunity to look through a Questar 7 much less
see one in person I am wondering how it would compare to the views
through an AP 155 f/7 or similar 6" apo used for planetary or lunar
observing? Is the Q 7 the equal of, better than or not up to a 6" apo?
This is assuming the Q has BB coatings and all reflective coatings on
mirrors are like new. Anyone ever had the chance to make this
comparison or have any thoughts on this

I would think that because of the central obstruction, a 7-inch Questar
might be a little inferior to a 6-inch unobstructed apo refractor. They're
probably almost exactly equal in real performance.

What is a Questar 7 really like? Does it substantially outperform the Meade
7-inch Maksutov?

Subject: Questar 7 vs AP 155
From: "Michael A. Covington"
Date: 9/4/03 4:19 PM Pacific Daylight Time
Message-id:


What is a Questar 7 really like? Does it substantially outperform the Meade
7-inch Maksutov?

***************
My Meade 7" Mak was brighter than my Q-7! But my Q-7 was made around 1975.

So todays coatings are much better, plus my Q-7 had aged coatings...

Chas P.

I had the opportunity to buy a Q7 for a very reasonable price. I have,
amongst other scopes, an AP155 f/7. I prefer the AP.


"Mike Kester" wrote:
Having never had the opportunity to look through a Questar 7 much less
see one in person I am wondering how it would compare to the views
through an AP 155 f/7 or similar 6" apo used for planetary or lunar
observing? Is the Q 7 the equal of, better than or not up to a 6" apo?
This is assuming the Q has BB coatings and all reflective coatings on
mirrors are like new. Anyone ever had the chance to make this
comparison or have any thoughts on this?

Questar has hype; Astro-Physics has substance. The AP 155 is preferable on
all accounts.

Del Johnson



"Mike Kester" wrote in message
om...
Having never had the opportunity to look through a Questar 7 much less
see one in person I am wondering how it would compare to the views
through an AP 155 f/7 or similar 6" apo used for planetary or lunar
observing? Is the Q 7 the equal of, better than or not up to a 6" apo?
This is assuming the Q has BB coatings and all reflective coatings on
mirrors are like new. Anyone ever had the chance to make this
comparison or have any thoughts on this?

Questar has hype; Astro-Physics has substance. The AP 155 is preferable on
all accounts.


Hi Del:

Which accounts are those? The AP155 is a fine scope, but so is the Q7. Apples
and oranges if you ask me.

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers!
Goto http://members.aol.com/RMOLLISE/index.html

"Del Johnson" wrote in message ...
Questar has hype; Astro-Physics has substance. The AP 155 is preferable on
all accounts.

Del Johnson


They have a common feature though: they cost loads of money (to good
use?). Both are a waste of it.

Andrea T.

My Astronomy Pages at:
http://www.geocities.com/andreatax/index.htm

"Del Johnson" wrote in message ...
Ah, the fruit analogy! :-)

They are both premium-priced telescopes of comparable aperture and thus a
direct comparison is most applicable. If Questar can't stand up to such a
comparison then they should not be so bold in their advertising.

Del Johnson




Hi Del:

Who says they can't? Not me.:-) The Q7s I've used have been very fine,
easily living up to their advertising. This is a high focal length
catadioptric. Some people love that idea, some will be happier with a
relatively fast refractor.

Peace,
Rod