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APM 152 ED APO club

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#151 Bomber Bob

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Posted 19 June 2018 - 06:09 PM

What's the GM8's max payload?   My vintage Meade StarFinder carries mine well, but I bolted a 16" aluminum plate to it that spreads out the two hinged rings.  I definitely have to pay attention to balance!



#152 mogur

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Posted 19 June 2018 - 06:41 PM

Wonder if my GM8 would hold it?

I thought you were the "never undermount" guy? poke.gif



#153 CHASLX200

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Posted 19 June 2018 - 06:45 PM

I thought you were the "never undermount" guy? poke.gif

Be nice if it did. Holds my heavy TMB 105/650 fine at over 21lbs.



#154 Jan Owen

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Posted 19 June 2018 - 08:34 PM

Depends on how steady you want it to be for planetary viewing...  My ES Twilight 2 mounts hold it fine, even with pier extensions for DSO viewing.  They'll do for casual planetary work, but for serious, high magnification work, I'd say the GM-8 would probably be rock bottom minimum (though I'd bet a GM-8 mount head on the G-11 tripod would do the trick for you), and a G-11 category mount would probably be a better choice.  Your mileage may vary.  My Atlas does just fine...


Edited by Jan Owen, 19 June 2018 - 08:44 PM.


#155 CHASLX200

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Posted 20 June 2018 - 05:12 AM

Depends on how steady you want it to be for planetary viewing...  My ES Twilight 2 mounts hold it fine, even with pier extensions for DSO viewing.  They'll do for casual planetary work, but for serious, high magnification work, I'd say the GM-8 would probably be rock bottom minimum (though I'd bet a GM-8 mount head on the G-11 tripod would do the trick for you), and a G-11 category mount would probably be a better choice.  Your mileage may vary.  My Atlas does just fine...

I have the G11 tripod for my GM8.  But i am sure a AP 900 or G11 would be a better mount.



#156 Jan Owen

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Posted 20 June 2018 - 04:05 PM

Without doubt.



#157 kirkwannabee

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Posted 22 June 2018 - 03:09 PM

Awesome scope

Attached Thumbnails

  • The rig.jpg
  • m13 072917.jpg

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#158 hfjacinto

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Posted 22 June 2018 - 03:53 PM

Mark,

 

Any more images? Your photos may sell me on the 152..



#159 Jan Owen

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Posted 28 June 2018 - 08:26 PM

Here's another, but again in altaz mode...

 

IMG_7319zzzzaCN.jpg


Edited by Jan Owen, 28 June 2018 - 08:27 PM.

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#160 Jan Owen

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Posted 28 June 2018 - 08:45 PM

Here's a look at the objective in it's cell on my kitchen table, during the fix described in one of my earlier posts in this thread.

 

IMG_7273azzzz CN.jpg

 

 


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#161 Jan Owen

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Posted 28 June 2018 - 08:53 PM

And one just a little bit closer, on the Atlas EQ-G...

 

IMG_7287aaaaa (1222 x 1034).jpg


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#162 daquad

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Posted 29 June 2018 - 08:29 AM

Here's a look at the objective in it's cell on my kitchen table, during the fix described in one of my earlier posts in this thread.

 

attachicon.gif IMG_7273azzzz CN.jpg

Nice scope, Jan.  I love mine too.  But I still don't see the need for those pesky centering screws.  As I asked in another thread, why can't the cell be machined with the required tolerances so that the centering screws aren't necessary?

 

Dom Q.



#163 donadani

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Posted 29 June 2018 - 10:45 AM

...because it would be more expensive?



#164 Jan Owen

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Posted 29 June 2018 - 08:15 PM

Nice scope, Jan.  I love mine too.  But I still don't see the need for those pesky centering screws.  As I asked in another thread, why can't the cell be machined with the required tolerances so that the centering screws aren't necessary?
 
Dom Q.

My only comment on the centering screws is that centering was checked & adjusted as necessary, then locked with lacquer or something similar, which can be seen in the photo.  So they were applied to serve both sort of as Lock-Tite AND as a tamper evident seal before the scope left Germany.  As for the necessity and/or the feasibility of removing the centering screws in a redesigned cell, I'll let you work with Markus on that one...  I'm happy with mine as-is now...wink.gif


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#165 Bomber Bob

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Posted 30 June 2018 - 12:32 PM

I've used this rig for 7 months now:

 

APM ED 152 S025 - Meade SF Pedestal.jpg

 

The mount is a 1980s Meade StarFinder with 1" steel shafts.  It's at the absolute minimum of what you'll need for high-power observing and/or planetary imaging -- requires 3 counterweights.  The 152 is so nose-heavy that maintaining balance is critical for motorized tracking -- I can tell within seconds that an adjustment is required.  I'm almost finished with a tripod version of another Meade SF, but that mount + surveyor tripod is actually a bit heavier than the 5' pedestal.  Definitely not grab & go.  But I'm determined to take it out to the country, as the DSO views in town have been far better than expected.


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#166 daquad

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Posted 30 June 2018 - 01:34 PM

My only comment on the centering screws is that centering was checked & adjusted as necessary, then locked with lacquer or something similar, which can be seen in the photo.  So they were applied to serve both sort of as Lock-Tite AND as a tamper evident seal before the scope left Germany.  As for the necessity and/or the feasibility of removing the centering screws in a redesigned cell, I'll let you work with Markus on that one...  I'm happy with mine as-is now...wink.gif

I'm happy with mine also.  I just don't understand the need for the radial adjustment screws for a doublet of 6".



#167 CHASLX200

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Posted 30 June 2018 - 02:49 PM

Here's another, but again in altaz mode...

 

attachicon.gif IMG_7319zzzzaCN.jpg

Looks like you got a Orange tree without greening sickness. They are all dead or about dead in FL state wide.



#168 CHASLX200

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Posted 30 June 2018 - 02:50 PM

And one just a little bit closer, on the Atlas EQ-G...

 

attachicon.gif IMG_7287aaaaa (1222 x 1034).jpg

Makes that mount look small.



#169 Jan Owen

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Posted 30 June 2018 - 03:48 PM

Looks like you got a Orange tree without greening sickness. They are all dead or about dead in FL state wide.

We've got a Valencia, a tangelo, and a pink grapefruit.  Lotsa' orange trees in the area...


Edited by Jan Owen, 30 June 2018 - 03:49 PM.


#170 Jan Owen

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Posted 30 June 2018 - 03:54 PM

Makes that mount look small.

The Atlas handles the 6" (or my 10" SCT or 8" Newtonian, or any of several other scopes) just fine for visual-only.  I can't speak to high power planetary Astrophotography, because I don't use it for that.


Edited by Jan Owen, 30 June 2018 - 03:57 PM.


#171 jag32

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Posted 11 August 2018 - 02:08 PM

I would like to buy an APM 152 but am afraid of what the import duties might be when it arrives to me in Maryland. Did any of you guys have to pay import duties?

#172 starman876

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Posted 11 August 2018 - 02:29 PM

I ordered mine today from OSO in PA.  will be here in a couple of days.  Looking forward to using it.


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#173 mogur

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Posted 11 August 2018 - 08:03 PM

I would like to buy an APM 152 but am afraid of what the import duties might be when it arrives to me in Maryland. Did any of you guys have to pay import duties?

APM has a new store in Pennsylvania. Why not just drive up there and avoid any duties?



#174 starman876

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Posted 11 August 2018 - 09:21 PM

APM has a new store in Pennsylvania. Why not just drive up there and avoid any duties?

I just ordered the 152ED from OSO in PA.  


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#175 starman876

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Posted 11 August 2018 - 09:22 PM

I would like to buy an APM 152 but am afraid of what the import duties might be when it arrives to me in Maryland. Did any of you guys have to pay import duties?

From OSO in PA there are no import duties.  $2500 for the 2.7" focuser and most likely $100 shipping to you.  




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