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Astro-Physics 10" Mak-Cass

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#1 Heywood

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Posted 17 September 2017 - 06:42 PM

Has there been any recent information about when A-P will start shipping its new 10" Mak-Cass?  I have been on the notification list for one since June 2001.

 

Back on April 3, 2017, Roland Christen stated on the A-P Yahoo Group that he would be making a "limited number" of the new 10" Mak-Cass "this year."

 

Thank you.

 

Heywood


Edited by Heywood, 17 September 2017 - 07:00 PM.


#2 M13 Observer

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Posted 17 September 2017 - 07:58 PM

Has there been any recent information about when A-P will start shipping its new 10" Mak-Cass?  I have been on the notification list for one since June 2001.

 

Back on April 3, 2017, Roland Christen stated on the A-P Yahoo Group that he would be making a "limited number" of the new 10" Mak-Cass "this year."

 

Thank you.

 

Heywood

Call AP and ask!



#3 Edd Weninger

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Posted 18 September 2017 - 12:23 PM

Roland still monitors the Yahoo groups.  And A-P now has a Facebook page, though I haven't seen it yet.  Ask either one.

 

Cheers,



#4 HunterofPhotons

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Posted 18 September 2017 - 01:34 PM

...and then let us know what you find out.  <g>

Out of all of the AP scopes that is the one I would most like to have.

 

dan k.


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#5 TG

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Posted 21 September 2017 - 10:59 AM

I think I signed up for this but I have no realistic expectations of getting one.

 

Tanveer.


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#6 MJB87

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Posted 21 September 2017 - 11:00 AM

Plan to put my spot in the list in my will so maybe one of my kids -- or their kids -- can get one.


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#7 noisejammer

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Posted 22 September 2017 - 06:58 PM

...Out of all of the AP scopes that is the one I would most like to have....

You and me both, Dan. You and me both.



#8 JohnH

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Posted 25 September 2017 - 01:08 PM

Probably would have been quicker to LEARN how to make one.


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#9 sink45ny

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Posted 25 September 2017 - 01:23 PM

I've been on since 2000.

 

 

Roland here our cries!!!!


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#10 JohnH

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Posted 25 September 2017 - 05:06 PM

I've been on since 2000.

 

 

Roland here our cries!!!!

Planning on building a 4 or 5 11" ones plus a 10 1/2" one


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#11 sink45ny

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Posted 25 September 2017 - 05:18 PM

 

I've been on since 2000.

 

 

Roland here our cries!!!!

Planning on building a 4 or 5 11" ones plus a 10 1/2" one

 

You're saying those are Roland's plans?



#12 JohnH

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Posted 26 September 2017 - 07:54 PM

 

 

I've been on since 2000.

 

 

Roland here our cries!!!!

Planning on building a 4 or 5 11" ones plus a 10 1/2" one

 

You're saying those are Roland's plans?

 

My own plans

 

I have a few smaller (4.5", 6" and 8") to tackle first. I plan to make one a convertible design (an f/4 Newtonian with a replaceable stalk which has a secondary on it for a f/16 Cassegrain design)



#13 AustinAstronomer

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Posted 26 September 2017 - 08:24 PM

 

...Out of all of the AP scopes that is the one I would most like to have....

You and me both, Dan. You and me both.

 

 

Why is the Astro-Physics 10" Mak-Cass the telescope you would most like to have?  If you had it, what would you do with it?  How would it compare to, say, the AP160, which is the telescope I have long wanted?



#14 Richard Whalen

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Posted 26 September 2017 - 09:38 PM

10" AP verses 160mm

Pros

more light gathering,

more resolution

same optical quality

more focal length for planetary imaging and visual use.

Shorter, maybe more portable?

Refractor like views 

Less moment arm on mount.

Much less expensive than a 10" APO

 

Cons

less fov for imaging and visual use. Longer exposures of DSO objects might be required, or more images stacked.

Not a refractor?


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#15 noisejammer

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Posted 26 September 2017 - 10:02 PM

1. I have a TOA150 with a FT 3545 so an AP160 seems unnecessary.

 

2. A 6" refractor is terrific for imaging but visually, it doesn't hold a candle to an excellent scope with larger aperture.

 

3. I like Maks - they offer an excellent package for shallow space observing. In truth, I've been dreaming of one of Matthias Wirth's 11" Maks since a friend purchased one, but one of Roland's would be even nicer.


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#16 Edd Weninger

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Posted 27 September 2017 - 12:38 AM

Go for the gusto.  A 16" APM Matthias Wirth f/10 Rumak.

 

Cheers,

 

 

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#17 vahe

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Posted 27 September 2017 - 07:24 AM

Based on what was written on ap-ug the optics are the same as the older version even though Roland promised the world never again!!!!! but the big improvement comes in weight reduction, listed at 26 pounds it is exactly the same weight as my 8”TEC Mak and also same as my AP155EDT, that is a comfortable weight to lift for older folks like me. The earlier model has a huge dovetail plate bolted to bottom, that is a lot of unnecessary weight, with the new one AP has mounting rings instead cutting the weight to the absolute minimum, huge improvement.

Vahe
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#18 Richard Whalen

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Posted 27 September 2017 - 09:37 AM

Wonder if he is doing the optics completely in house this time?



#19 HunterofPhotons

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Posted 27 September 2017 - 10:06 AM

 

 

...Out of all of the AP scopes that is the one I would most like to have....

You and me both, Dan. You and me both.

 

 

Why is the Astro-Physics 10" Mak-Cass the telescope you would most like to have?  If you had it, what would you do with it?  How would it compare to, say, the AP160, which is the telescope I have long wanted?

 

 

Basically for the reasons Richard W. has enumerated.

I have an AP 155, which is wonderful, but the increased aperture of the Mak-Cass would certainly lessen the exposure time for DSOs.

The 3708mm focal length makes a wide canvas for those tiny targets that few people image.

The 23% central obstruction makes for contrasty viewing when using eyepieces.

 

dan k.



#20 Paul G

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Posted 27 September 2017 - 11:44 AM

...Out of all of the AP scopes that is the one I would most like to have....

You and me both, Dan. You and me both.

 
Why is the Astro-Physics 10" Mak-Cass the telescope you would most like to have?  If you had it, what would you do with it?  How would it compare to, say, the AP160, which is the telescope I have long wanted?

10" AP verses 160mm
Pros
more light gathering,
more resolution
same optical quality
more focal length for planetary imaging and visual use.
Shorter, maybe more portable?
Refractor like views 
Less moment arm on mount.
Much less expensive than a 10" APO
 
Cons
less fov for imaging and visual use. Longer exposures of DSO objects might be required, or more images stacked.
Not a refractor?


I would add that the 10" Mak should cool faster than the 160 and will give a good image while it is cooling (I don't have a 160 but I have the 10" Mak and the 155EDFS and 175EDF).

Edited by Paul G, 27 September 2017 - 11:46 AM.

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#21 Heywood

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Posted 04 October 2017 - 08:19 PM

Hypothetical:  For general visual work, you have a choice, at no cost to you, of either an Astro-Physics 10" Mak-Cass or an Astro-Physics 160mm triplet apo.  Because of the high cost of these two telescopes, you can have either one but not both.  But if you choose the Mak-Cass, you can also have a relatively-inexpensive 120mm ED doublet for wide-field observing.

 

So, would you choose the 10" Mak-Cass (and the 120mm ED doublet) or the 160mm apo?

 

Note:  Under this hypothetical, you are not allowed to have any other telescopes.


Edited by Heywood, 05 October 2017 - 08:17 AM.


#22 Richard Whalen

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Posted 04 October 2017 - 09:36 PM

10" MCT


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#23 Kunama

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Posted 05 October 2017 - 12:35 AM

AP 10" MCT and you can keep the inexpensive 120ED....


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#24 Traveler

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Posted 05 October 2017 - 01:13 AM

Go for the gusto.  A 16" APM Matthias Wirth f/10 Rumak.

 

Cheers,

Edd, do i see a traveler riding on your Rumak?



#25 R Botero

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Posted 05 October 2017 - 04:29 AM

Or have the three of them: large® refractor, 10” Mak and wide field refractor:

get.jpg

I have a 6” f/7.5 StarFire EDF for imaging and then on another mount a 10” f/20 Mak from TEC and a 94mm f/7 glass made by Roland in the Brandon days. The last two scopes are visual or planetary imaging only.

Roberto


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