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APM 152 ED APO club

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564 replies to this topic

#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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  • Deer Lick and Stephans Quintet.jpg

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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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