Right,
It will give better performance than a normal newt at much less cost then
the CORRESPONDING apo. (my emphasis)
So you get a 3" scope that performs better than a 3" newt and costs less
than a 3" apo. But it cost more than a 6" newt, is no more portable and
performs worse.
-Leonard
----- Original Message -----
From: "Jeff Crilly" <jlc@No-Spam>
To: "The Astronomy Connection" <sf-bay-tac@No-Spam>
Sent: Monday, March 07, 2005 12:16 PM
Subject: Re: [TAC] Scope of confusion
>
> Without the diffraction spikes (and less bluriness) then possibly
> performance on the moon/planets is better than the normal newt,
> at substantially less cost than the corresponding apo?
>
>
> --- Peter Santangeli <peter@No-Spam> wrote:
>
>>
>> I'm confused. I just read the S&T article on Orion's 3" off axis
>> reflector.
>> I was actually interested in this, because it is clearly so unusual. From
>> the article though, when compared to Orion's *cheaper* 6" newtonian, it
>> has:
>>
>> - less light grasp (obviously)
>> - the same size tube
>> - (surprisingly!) less contrast
>>
>> What am I missing here? Apart from it being gimicky, what advantages does
>> it
>> offer the observer?
>>
>> Pete
>>
>>
>
Received on Mon Mar 7 13:55:42 2005