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APM 152 ED APO club

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#551 Bomber Bob

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Posted 18 March 2020 - 09:33 AM

Thanks for sharing that beautiful photo of The Needle.

 

Potential buyers can see why this scope has so many fans.  It ain't cheap, but I think we get our money's worth -- and a bit more.


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#552 daquad

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Posted 18 March 2020 - 01:19 PM

....sharing some recent images shot through that scope:

 

....imaging NGC4244 two nights ago with the APM152...

48x300Sec with the ASI071MC-PRO OSC-CMOS.

 

thumbnails.

Final-8-copy.jpg

DSCF8382.jpg

 

Stay well and clear skies to you all!

Wow, 48 5-minute exposures; that's 4 hours.  No wonder I don't image.  Very nice photo.

 

Dom Q.


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#553 CvBadengoth

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Posted 18 March 2020 - 01:26 PM

thank you all! 

 

Stay safe and well!

 

CS!

 

Chris.



#554 John Miele

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Posted 21 March 2020 - 12:13 PM

That image...wow!

 

I see very very little maybe even none, blue color halos around any stars. Makes me rethink the need for a triplet. I can't afford a 150ish sized triplet but I could afford a 150ish sized doublet. I think I'd rather trade a virtually imperceptible loss of color fidelity for the extra focal length of this big 152...hmmm


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#555 daquad

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Posted 21 March 2020 - 12:55 PM

That image...wow!

 

I see very very little maybe even none, blue color halos around any stars. Makes me rethink the need for a triplet. I can't afford a 150ish sized triplet but I could afford a 150ish sized doublet. I think I'd rather trade a virtually imperceptible loss of color fidelity for the extra focal length of this big 152...hmmm

You will see some blue around the brightest stars, photographically, at least, if not visually.  60 second exposure, no processing.

 

Dom Q.

 

M42 and M43_resized_2.JPG


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#556 kenkolen

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Posted 21 March 2020 - 01:01 PM

You will see some blue around the brightest stars, photographically, at least, if not visually.  60 second exposure, no processing.

 

Dom Q.

 

attachicon.gifM42 and M43_resized_2.JPG

I am sure the blue is there but I see the photo a bit out of focus or maybe you are cropping the original? A little processing will go a long way



#557 CvBadengoth

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Posted 21 March 2020 - 01:07 PM

....so far I have never seen any CA with that scope in any images I took with it. And there where bright stars in there....nor did I use CA removal in PS......

I even shot Vega just for testing and saw no CA....

 

but I see a bit CA in your image...and also in other images of other users....maybe I got luck being on the upper part of lens quality distribution....

 

What I have in my light path is a Baader Moon&Skyglow Filter, I use it always, maybe that helps to kill CA?!?


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#558 John Miele

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Posted 21 March 2020 - 01:18 PM

Ahhh...I do see a bit of blue in the other image. But it is still not very bad. I guess again it's all about the trade space. These remain very nice images regardless...



#559 daquad

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Posted 21 March 2020 - 01:19 PM

....so far I have never seen any CA with that scope in any images I took with it. And there where bright stars in there....nor did I use CA removal in PS......

I even shot Vega just for testing and saw no CA....

 

but I see a bit CA in your image...and also in other images of other users....maybe I got luck being on the upper part of lens quality distribution....

 

What I have in my light path is a Baader Moon&Skyglow Filter, I use it always, maybe that helps to kill CA?!?

Yes, the Baader filter will eliminate the blue as it was meant to do.

 

Dom Q.



#560 daquad

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Posted 21 March 2020 - 01:25 PM

I am sure the blue is there but I see the photo a bit out of focus or maybe you are cropping the original? A little processing will go a long way

I agree. Anyone with the ability to process their astrophotos should be able to mitigate the blue.  I don't do AP, except to take "snapshots", unguided at that.

 

Dom Q.



#561 Astrojensen

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Posted 21 March 2020 - 02:59 PM

Visually, there is a very tiny bit of false color (blue) in my APM 152 ED, but it really is very, very little and on no object I've observed so far, even Venus, has it been a problem. 

 

 

Clear skies!

Thomas, Denmark


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#562 hfjacinto

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Posted 21 March 2020 - 07:37 PM

For most people the APM 152 is more than fine for imaging. Please note that this is 17 miles west of NYC and I used a color camera.

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#563 hfjacinto

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Posted 21 March 2020 - 07:39 PM

First time I ever saw the propeller.

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#564 peleuba

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Posted 25 March 2020 - 11:56 AM

Visually, there is a very tiny bit of false color (blue) in my APM 152 ED, but it really is very, very little and on no object I've observed so far, even Venus, has it been a problem. 

Very True.  On mine, the level of chromatic aberration reminded me of an FS152.   Maybe slightly worse.   False Color is not the first problem that comes to mind with these telescopes.  They seem to take terrific images as can be seen above. 


Edited by peleuba, 25 March 2020 - 04:11 PM.

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#565 aa6ww

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Posted 26 March 2020 - 03:10 AM

I've not seen any CA on my 152ED regardless of what object I look at. The Moon, Venus, Vega, Sirius. I'm using Ethos or ES 100 deg eyepieces. When back yard obsering, objects are usually 30 degs or more above the horizon since thats what it takes to clear the houses and tree's all around me.

 

...Ralph 

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  • 152 close up on G11.jpg

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#566 BillP

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Posted 13 April 2020 - 10:09 PM

Had a great evening of observing with the 152 tonight...it never disappoints!  M1, M42/43, M51/NGC5195, M81/82, M101, Leo Triplet, several Open Clusters (Melotte 111, M37, M38+NGC1907, M44, M48, NGC1981, NGC2301-love this one), and just two Doubles (Mizar/Alcor and Gamma Leo).  M81/82 were spectacular using 25mm Sterling Plossl -- both of course together in the FOV, spiral arm halo around the core of M81 was elongated and extended quite large.  M82 was filled with knotty structure and amazingly bright.  Binoviewed them all using either a pair of 25mm Sterling Plossls (55+ deg AFOV) and 18mm Tak LEs.  SQM reading for tonight was 20.8.


Edited by BillP, 14 April 2020 - 10:29 AM.

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#567 BillP

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Posted 14 April 2020 - 07:46 PM

BTW, I've never observed NGC 2301 before.  Was just scanning around with my binoculars when I came across it and what a treat it was through the scope!  Love its loose elongated shape; and not far from it is this nice little string of 3 brighter stars.  A new favorite now laugh.gif  It is ~2,500-2,800 LY distant, ~160-250 M Years Old, Comprised of ~100 Members, Discovered in 1786 by William Herschel (of course), it is Herschel 84 from the H400 List, sometimes referred to as the Great Bird Cluster, RA: 06h51m48.0s. DEC: +00028'00".  There are a number of variable stars in the field of view with this cluster, two of which vary by 1.3 and 1.9 magnitudes (see figure 1 and table 2 in https://iopscience.i...150/5/161/meta)

 

See the string of 3 brighter stars in far right of this pic -- https://stellarscene...ect/ngc2301.jpg

 

This pic shows the star colors well of the cluster -- https://www.dickmill...gc2301_full.jpg


Edited by BillP, 14 April 2020 - 08:11 PM.

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#568 BillP

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Posted 15 April 2020 - 09:58 AM

A pic of the setup used during those observations grin.gif

 

APM 152.jpg


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#569 Astrojensen

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Posted 15 April 2020 - 11:51 AM

That "steering wheel" looks pretty rad. 

 

 

Clear skies!
Thomas, Denmark


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#570 BillP

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Posted 15 April 2020 - 01:15 PM

That "steering wheel" looks pretty rad.

Thanks.  Really like it as it makes repositioning the scope a breeze.  Made of a hard rubber material that is 3D printed by a friend who lives in California, Ted Hauter.  He will make them for others.  Cost is very reasonable.  Made of some sort of black hard, dense, stiff but still slightly rubbery/flexing material.  Anyone can PM me if they want his email.  No mounting necessary as it is held in place by pressure from the three rubber "feet". 


Edited by BillP, 15 April 2020 - 01:18 PM.

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#571 peleuba

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Posted 15 April 2020 - 01:55 PM

 No mounting necessary as it is held in place by pressure from the three rubber "feet". 

 

So this means its (re)movable as well.  NICE Design.  bow.gif



#572 BillP

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Posted 15 April 2020 - 02:22 PM

Yes it is a nice design.  Looks and functions nicely while not being expensive and requires no mounting ot altering of the OTA in any way.  Plus can place it along the OTA wherever you find convenient.  He can make them for other OTA sizes I understand.  I was thinking about one for my TSA but the way the TSA focuser and finder mount is positioned don't think it would work.



#573 Bomber Bob

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Posted 22 April 2020 - 10:40 AM

Galaxy Hunting last night with my 152ED was a blast -- didn't want to come inside.  I'm 2 miles from city center, but with the lock-down, fewer lights to my west, and overall skies are much darker than usual.  I started at Regulus, and worked my way east, with the 152 @ 80x (Paradigm 15) and a vintage Yamamoto 60mm F7 at 20x - 50x for star-hopping, dipped into the Realm of Galaxies, and ended at Coma Berenices.  So many galaxies.  And, Messier 3 at 300x (Radian 4)...  Just, Wow -- a field full of stars.
 
Now that I have the old Tinsley EQ back up & running, I'm gonna have to use The Beast more often.  Though, maybe it's just me, but it doesn't look that big when I'm toting it outside; but once up on the mount, with the dewshield extended, and the Bresser "harness" on it, it looks Huge..
 
For sweeping / manual tracking, it's tough to beat the old Tinsley EQ:  large disks loaded with ball bearings on each axis, 200# of mass, and it swings with -- literally! -- a finger-push on a Bresser ring & with zero backlash or vibrations.  I hope to have modern drives adapted to the old gear box before I depart this mortal plane; meanwhile, I have the motorized 1980s Meade StarFinder for extended viewing / digital imaging.
 
The APM 152ED is a marvel to me.  I had no idea, sitting at the eyepiece of my Towa 339 (80mm F15) 45 years ago, straining to see bright fuzzies, that I would ever own a 6" short refractor with near-perfect color correction -- that would've been the stuff of science fiction.  Vive le progr├Ęs!


Edited by Bomber Bob, 22 April 2020 - 02:49 PM.

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#574 chuckscap

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Posted 01 June 2020 - 07:23 PM

I am so tempted as I have a new to me AP900GTO to put a nice 6" APO on.   I saw this ad and it says it's a triplet but seems very similar.

 

https://optcorp.com/...g-ota-telescope

 

Can you folks enlighten me?    

 

Thanks, so glad so many of you are thrilled with your APM 152 scopes

 

Chuck


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#575 skybsd

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Posted 01 June 2020 - 07:35 PM

I am so tempted as I have a new to me AP900GTO to put a nice 6" APO on.   I saw this ad and it says it's a triplet but seems very similar.

 

https://optcorp.com/...g-ota-telescope

 

Can you folks enlighten me?    

 

Thanks, so glad so many of you are thrilled with your APM 152 scopes

 

Chuck

The scope in your link is a VERY DIFFERENT scope - the price difference is a good hint.., 

 

Best., 

 

skybsd 




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