Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

APM 152 ED APO club

  • Please log in to reply
500 replies to this topic

#51 Jon_Doh

Jon_Doh

    Vanguard

  • -----
  • Posts: 2338
  • Joined: 16 Sep 2011
  • Loc: Just South of Pluto

Posted 02 December 2017 - 10:39 AM

Thanks Bill.  My psychology revolves around mount size as a key component in the decision process :).  But, in the end what I have probably is inadequate for the 140 and certainly the 152.



#52 BillP

BillP

    Hubble

  • *****
  • Posts: 18800
  • Joined: 26 Nov 2006
  • Loc: Spotsylvania, VA

Posted 02 December 2017 - 10:52 AM

If all you have is the iOptron MiniTower II then definitely not.  I have the MiniTower Pro and feel that for long tubes the TSA-102 probably is max for it; and the C8 rode fine on it as well but it is short tube.  A 140 or 152 Apo will need a much beefier mount, especially if an automated one. 

 

The ES Twilight II Alt-Az though is reasonably priced and should handle the load - https://www.cloudyni...ount/?p=7125560


Edited by BillP, 02 December 2017 - 11:14 AM.

  • Jon_Doh likes this

#53 Bomber Bob

Bomber Bob

    Hubble

  • *****
  • Posts: 15941
  • Joined: 09 Jul 2013
  • Loc: The Swamp, USA

Posted 02 December 2017 - 11:38 AM

Physics and science will always take a back seat to ones wants and desires, so never sell short your psychology...

 

In my case, it's both:  I want a pure aperture to aperture comparison; and, yes, thinking 6" Refractor releases all kinds of endorphins!

 

At home, my APM 152 will ride on this Meade SF + 5' pedestal:

 

Meade MTS Conversion S10.jpg

 

That's a 16" aluminum plate with rows & rows of 1/4-20 holes to adapt just about any tube rings to it.  I'm hoping I can use a combination of smaller counterweights rather than the 25# one in the photo -- makes balancing during a multi-target session easier on my hands & back (long refractor OTAs really shift the COG!).  Gotta finish the pillar to adapt my second SF mount to the Filotecnica surveyor tripod.  I just left retirement to work full-time, so "free time" to work on these projects is at a minimum.  But, we're still 3 months away from our best Winter Seeing season, so I can procrastinate on CN for a bit...


Edited by Bomber Bob, 02 December 2017 - 11:58 AM.

  • zjc26138 and TSSClay like this

#54 nicknacknock

nicknacknock

    A man of many qualities, even if they are mostly bad ones

  • *****
  • Administrators
  • Posts: 12770
  • Joined: 20 Feb 2012
  • Loc: Nicosia, Cyprus

Posted 04 December 2017 - 06:29 AM

Physics and science will always take a back seat to ones wants and desires, so never sell short your psychology...

 

In my case, it's both:  I want a pure aperture to aperture comparison; and, yes, thinking 6" Refractor releases all kinds of endorphins!

 

At home, my APM 152 will ride on this Meade SF + 5' pedestal:

 

attachicon.gifMeade MTS Conversion S10.jpg

 

That's a 16" aluminum plate with rows & rows of 1/4-20 holes to adapt just about any tube rings to it.  I'm hoping I can use a combination of smaller counterweights rather than the 25# one in the photo -- makes balancing during a multi-target session easier on my hands & back (long refractor OTAs really shift the COG!).  Gotta finish the pillar to adapt my second SF mount to the Filotecnica surveyor tripod.  I just left retirement to work full-time, so "free time" to work on these projects is at a minimum.  But, we're still 3 months away from our best Winter Seeing season, so I can procrastinate on CN for a bit...

 

Bob,

 

I so wish Meade still made the SF mounts. Perfect mounts for people who love to star hop and still want a little dosage of tracking along with their star hopping.

 

If I ever run into a pristine one... 


  • Bomber Bob likes this

#55 bob midiri

bob midiri

    Skylab

  • *****
  • Posts: 4025
  • Joined: 17 Jun 2004
  • Loc: pa 19320

Posted 04 December 2017 - 07:33 PM

Physics and science will always take a back seat to ones wants and desires, so never sell short your psychology...

 

In my case, it's both:  I want a pure aperture to aperture comparison; and, yes, thinking 6" Refractor releases all kinds of endorphins!

 

At home, my APM 152 will ride on this Meade SF + 5' pedestal:

 

attachicon.gifMeade MTS Conversion S10.jpg

 

That's a 16" aluminum plate with rows & rows of 1/4-20 holes to adapt just about any tube rings to it.  I'm hoping I can use a combination of smaller counterweights rather than the 25# one in the photo -- makes balancing during a multi-target session easier on my hands & back (long refractor OTAs really shift the COG!).  Gotta finish the pillar to adapt my second SF mount to the Filotecnica surveyor tripod.  I just left retirement to work full-time, so "free time" to work on these projects is at a minimum.  But, we're still 3 months away from our best Winter Seeing season, so I can procrastinate on CN for a bit...

Well JW did it arrive?



#56 Bomber Bob

Bomber Bob

    Hubble

  • *****
  • Posts: 15941
  • Joined: 09 Jul 2013
  • Loc: The Swamp, USA

Posted 04 December 2017 - 08:12 PM

Nope!  UPS rescheduled to tomorrow.  Weird status message... I think they meant that all the dense fog disrupted their morning schedule, and it snowballed for the entire day.


  • Mazerski likes this

#57 jay.i

jay.i

    Mercury-Atlas

  • *****
  • Posts: 2736
  • Joined: 11 Jun 2017
  • Loc: Minneapolis, MN

Posted 04 December 2017 - 08:40 PM

Nope!  UPS rescheduled to tomorrow.  Weird status message... I think they meant that all the dense fog disrupted their morning schedule, and it snowballed for the entire day.

I had a UPS package spontaneously delayed today, and last Friday. Not happy about it.



#58 Jon_Doh

Jon_Doh

    Vanguard

  • -----
  • Posts: 2338
  • Joined: 16 Sep 2011
  • Loc: Just South of Pluto

Posted 05 December 2017 - 08:50 AM

 

Nope!  UPS rescheduled to tomorrow.  Weird status message... I think they meant that all the dense fog disrupted their morning schedule, and it snowballed for the entire day.

I had a UPS package spontaneously delayed today, and last Friday. Not happy about it.

 

So did my wife on something she ordered and she wasn't happy either.  Something going on with Brown.



#59 Bomber Bob

Bomber Bob

    Hubble

  • *****
  • Posts: 15941
  • Joined: 09 Jul 2013
  • Loc: The Swamp, USA

Posted 15 December 2017 - 09:37 PM

After First Light, I'm a happy member of The Club:

 

APM ED 152 S022 - Meade SF Pedestal.jpg

 

Excellent star tests (a small blue halo with Altair & Deneb).  Low power / clean splits of my Delphinus Doubles.  Eye-watering resolution of M15's brightest members.  More detail in M42 at 133x than I thought possible from in town.

 

Focuser rotates without affecting focus.  The 10:1 micro-focuser makes the Baader prism's redundant.  Mechanics, fit, & finish are remarkable at this price!  Placing it in the rings up on that pedestal is much easier than the 6" Tinsley Cass.  IOW:  A Definite Keeper.


  • SteveG, eros312, mikerepp and 2 others like this

#60 Eric H

Eric H

    Viking 1

  • *****
  • Posts: 533
  • Joined: 12 Feb 2010
  • Loc: Washougal, WA

Posted 16 December 2017 - 11:35 AM

I'll be a new member next week. Ordered the 152 with the 3.7" focuser.


  • daquad and Bomber Bob like this

#61 daquad

daquad

    Apollo

  • *****
  • Posts: 1341
  • Joined: 14 May 2008

Posted 17 December 2017 - 10:23 AM

I'll be a new member next week. Ordered the 152 with the 3.7" focuser.

Eric, you're gonna love that 3.7" focuser.


  • Eric H likes this

#62 James Stanski

James Stanski

    Vostok 1

  • *****
  • Posts: 187
  • Joined: 20 May 2014
  • Loc: Stanhope, New Jersey

Posted 18 December 2017 - 03:05 PM

Last weekend, spent some time working on the 152.  I flocked the dew shield and tightened the brass screws on the focuser.  Wish I had tightened those brass screws a year ago, now it's very sturdy.  Back to the dew shield, it's not often I stare the wrong way down a scope, but when I do, I love those 6" of glass!  If you are going to flock I suggest taking the whole shield off and using scopestuff flock for the entire length.  This way, it doesn't get caught on anything and peel back when adjusting the shield.



#63 SteveG

SteveG

    Cosmos

  • *****
  • Posts: 7861
  • Joined: 27 Sep 2006
  • Loc: Seattle, WA

Posted 18 December 2017 - 05:13 PM

 

I'll be a new member next week. Ordered the 152 with the 3.7" focuser.

Eric, you're gonna love that 3.7" focuser.

 

It simply looks so much better! The proportions look better to me. Do they state how much extra weight it adds (which is probably helpful for balance)?



#64 Eric H

Eric H

    Viking 1

  • *****
  • Posts: 533
  • Joined: 12 Feb 2010
  • Loc: Washougal, WA

Posted 18 December 2017 - 05:41 PM

 

 

I'll be a new member next week. Ordered the 152 with the 3.7" focuser.

Eric, you're gonna love that 3.7" focuser.

 

It simply looks so much better! The proportions look better to me. Do they state how much extra weight it adds (which is probably helpful for balance)?

 

I don't see any weight difference listed on the APM website. I'm sure it's a little heavier but can't be that much heavier.



#65 Bomber Bob

Bomber Bob

    Hubble

  • *****
  • Posts: 15941
  • Joined: 09 Jul 2013
  • Loc: The Swamp, USA

Posted 18 December 2017 - 06:48 PM

A heavier tail end would help -- if your mount can carry it.  I'm thinking of adding an 80mm all-metal finder to my 152 to help balance the load -- the GSO plastic 50mm isn't hefty enough.


  • SteveG likes this

#66 MarcoItaly

MarcoItaly

    Vostok 1

  • -----
  • Posts: 122
  • Joined: 14 Sep 2007
  • Loc: Italy

Posted 21 December 2017 - 03:50 AM

Guys, do you think the bigger focuser is necessary for pure visual work?

I think not...

 

Marco



#67 emilslomi

emilslomi

    Messenger

  • -----
  • Posts: 404
  • Joined: 12 Nov 2015
  • Loc: Alps

Posted 21 December 2017 - 04:49 AM

Guys, do you think the bigger focuser is necessary for pure visual work?

I think not...

 

Marco

No, it is not really. It is a bit heavier and allows a little more comfortable placement of the scope on the mount - but in that function it is a quite expensive counterweight. It is also said to be a little more stable, but the 2.5" is very stable to begin with.

 

Looking at the length and diameter of the drawtube, the 2.5" focuser will not vignette eyepieces any more (if any) than the diagonal.

 

Cheers, Emil

 

PS However, the 3.7" looks much nicer. Both the 140 and 150 look a little bitten off with the 2.5". I tried to convince myself to get the 3.7" but, alas, did not succeed.


Edited by emilslomi, 21 December 2017 - 07:10 AM.


#68 Eric H

Eric H

    Viking 1

  • *****
  • Posts: 533
  • Joined: 12 Feb 2010
  • Loc: Washougal, WA

Posted 21 December 2017 - 11:57 AM

My new 152 left Germany yesterday, left Kentucky this morning at 5am, arrived in Portland this morning and is now on the truck for delivery today!!! Too bad the weather sucks, lol.


  • SteveG and Bomber Bob like this

#69 Eric H

Eric H

    Viking 1

  • *****
  • Posts: 533
  • Joined: 12 Feb 2010
  • Loc: Washougal, WA

Posted 21 December 2017 - 01:52 PM

Well, that was quick.

 

Attached Thumbnails

  • 20171221_102806.jpg
  • 20171221_102959.jpg

  • Jeff B and nuvax like this

#70 Eric H

Eric H

    Viking 1

  • *****
  • Posts: 533
  • Joined: 12 Feb 2010
  • Loc: Washougal, WA

Posted 21 December 2017 - 01:53 PM

More pics of the un wrap.

Attached Thumbnails

  • 20171221_103038.jpg
  • 20171221_103229.jpg

  • Jeff B, eros312, nicknacknock and 4 others like this

#71 Eric H

Eric H

    Viking 1

  • *****
  • Posts: 533
  • Joined: 12 Feb 2010
  • Loc: Washougal, WA

Posted 21 December 2017 - 01:54 PM

Woohoo! Now, where are those clear skies?

Attached Thumbnails

  • 20171221_103929.jpg
  • 20171221_103935.jpg

  • Jeff B, R_Huntzberry, nicknacknock and 7 others like this

#72 R_Huntzberry

R_Huntzberry

    Mariner 2

  • *****
  • Posts: 208
  • Joined: 03 Apr 2011
  • Loc: North Florida Lat 30.30

Posted 21 December 2017 - 04:47 PM

Congratulations on the new scope!


  • Eric H likes this

#73 SteveG

SteveG

    Cosmos

  • *****
  • Posts: 7861
  • Joined: 27 Sep 2006
  • Loc: Seattle, WA

Posted 21 December 2017 - 06:48 PM

Wow - cool!



#74 denis0007dl

denis0007dl

    Binoviewers Expert

  • *****
  • Vendors
  • topic starter
  • Posts: 2095
  • Joined: 17 Apr 2012
  • Loc: Umag, Croatia, Europe

Posted 22 December 2017 - 01:54 PM

Congrats waytogo.gif



#75 daquad

daquad

    Apollo

  • *****
  • Posts: 1341
  • Joined: 14 May 2008

Posted 22 December 2017 - 08:14 PM

Guys, do you think the bigger focuser is necessary for pure visual work?

I think not...

 

Marco

No, again. But the 3.7" focuser has two rotating elements.  The finder on both the 2.5" and the 3.7" can be mounted on the focuser body, so that when the focuser is rotated the finder also rotates.  This is useful with an equatorial mount, because you can rotate the focuser to place the finder in a more convenient position. 

 

However, with the 3.7" focuser you can rotate the eyepiece/diagonal/camera, etc. independently of the focuser body.  This is convenient if you are imaging as you can rotate the camera without changing the orientation of the finder.  Additionally, the 3.7" focuser adds a bit more weight to the eyepiece end, which provides for a better balance point.  

 

I have found that the collimation stays spot on regardless of how either of the focuser elements are rotated and the motion is buttery smooth and can hold anything I place on it.  I can't imagine how a FT or ML can be any better.


  • SteveG, Bomber Bob and drd715 like this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics