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New 152 MM APM APO in the house!

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#451 CHASLX200

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Posted 09 January 2019 - 05:40 PM

I have been happy with my APM 152 ED for little time i used it. 


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#452 Bomber Bob

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Posted 09 January 2019 - 09:17 PM

As affordable as these scopes are, with p-v worse than 1/4 wave in some instances (like Bob's, sorry Bob)

 

No need to apologize!  I've had mine for a year, and the views & images have exceeded expectations for a Big Budget APO.  Have you seen my gray Jupiter image?  Focus wasn't perfect, but it gives a good idea of what I routinely saw at 300x to 400x in 8/10 seeing in 2018.  I post images so when I report seeing detail within the GRS, or 4 Galilean disks with distinct size & color differences, or albedo features on Ganymede, you don't just have to take my word for it...

 

And, the methodology that generated the numbers isn't completely clear, either.  Can't speak for Marcus, but I kinda took that to mean other vendors might use different methods to accentuate the positives -- when they provide lab reports at all.  APM tests 100% of the objective.  The more you test, the more likely you are to detect flaws.  Test only the center 90%, and that's not a fair comparison with companies that test the whole enchilada...

 

Again, the fact that APM gives the owner a report means more to me than the numbers.  For most of my 50 years in the hobby, you didn't get diddly-squat, except flowery prose from the vendor.  


Edited by Bomber Bob, 09 January 2019 - 09:17 PM.

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#453 Spacefreak1974

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Posted 13 January 2019 - 10:38 PM

I'm thinking of two mount options. One is the AZEQ6/Atlas Pro or iOptron Ieq45pro in Alt Az mode

 

Alt Az seems like a good configuration for a scope this long?

 

Jon



#454 hfjacinto

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Posted 26 April 2019 - 02:25 PM

No reason, just bumping up to give the APM 152 some love ;)


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#455 Crow Haven

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Posted 26 April 2019 - 03:29 PM

No reason, just bumping up to give the APM 152 some love wink.gif

That's a good thing! grin.gif At times this forum can suck the fun right out of things.lol.gif

I'll be receiving the SW150ED Monday and plan to just enjoy it.


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#456 hfjacinto

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Posted 26 April 2019 - 03:32 PM

That's a good thing! grin.gif At times this forum can suck the fun right out of things.lol.gif

I'll be receiving the SW150ED Monday and plan to just enjoy it.

Suck the fun :) this forum takes micrometers and turns them into kilometers. There is more argument here about the most assine topics its almost as bad as tone controls for audio enthusiasts. 


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#457 Doug Culbertson

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Posted 26 April 2019 - 03:34 PM

Suck the fun smile.gif this forum takes micrometers and turns them into kilometers. There is more argument here about the most assine topics its almost as bad as tone controls for audio enthusiasts. 

And I thought it was bad over in Eyepieces. wink.gif


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#458 hfjacinto

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Posted 26 April 2019 - 03:37 PM

And I thought it was bad over in Eyepieces. wink.gif

Doug,

 

I sold off my Televue's as I wasn't using them and got the ES 100* and it was like I killed some one's family member.. what do you mean you sold Televue's? Are you going blind?

 

But to get back onto topic, isn't the APM just Sexy looking?

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#459 Doug Culbertson

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Posted 26 April 2019 - 03:40 PM

Doug,

 

I sold off my Televue's as I wasn't using them and got the ES 100* and it was like I killed some one family member.. what do you mean you sold Televue's? Are you going blind?

 

But to get back onto topic, isn't the APM just Sexy looking?

Not a single TV in my eyepiece lineup either. Oh, wait, there’s that T1 Paracorr.

 

That’s a beautiful scope for sure. Looks just like my 140, only bigger. 


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#460 Crow Haven

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Posted 26 April 2019 - 04:07 PM

Suck the fun smile.gif this forum takes micrometers and turns them into kilometers. There is more argument here about the most assine topics its almost as bad as tone controls for audio enthusiasts. 

Yes, and makes me think my cat's box needs cleaning. lol.gif


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#461 starman876

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Posted 26 April 2019 - 05:32 PM

it is an interesting bunch of people.  There are some left with common senselol.gif



#462 Daniel Mounsey

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Posted 27 April 2019 - 06:42 AM

There's nothing common about common sense anymore.


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#463 hfjacinto

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Posted 05 June 2019 - 08:54 AM

With all this rain I didn't know when to expect a clear night but we finally got one on 6/3. I set up the APM 152 for imaging. With 1200 MM Focal Length I wanted an object that wasn't super small, but not to large so I went for M13.

 

Messier 13 or NGC 6205, is a globular cluster of several hundred thousand stars in the constellation of Hercules.  M13 is about 145 light-years in diameter, and has several hundred thousand stars. M13 is about 22,200 light-years away from Earth.

While we now know that M13 is composed of hundreds of thousands of stars, it wasn't until 1779 that the single stars in this globular cluster were resolved. Compared to the stars in the neighborhood of the Sun, the stars in M13's are more than a hundred times denser. They are so densely packed together that old red stars sometimes collide and produce new stars "blue stragglers" which are billions of years old but look like young blue super giant stars.

 

One interesting fact was that in 1974 a message was sent from the Arecibo radio antenna with encoded information about the human race, DNA, atomic numbers, Earth's position and other information, towards M13 as an experiment in contacting potential extraterrestrial civilizations in the cluster. BUT based on what we know now globular clusters aren’t likely to have many terrestrial worlds due to the interaction of the close stars. And since M13 is moving through space during the transit time; chances aren’t good that the cluster will be in a position to receive the message by the time it arrives.

 

Image was taken with an APM 152MM APO, the camera was an SBIG 8300C, mount was a G11. The focuser on the APM has been motorized by Moonlite. SGP was used for automation (acquisition, guiding and focusing). A total of 100 – 3 minutes images were taken and 91 were used. Maxim DL was used for staking and calibration, Photoshop was used for post processing.

 

Thanks for looking.

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#464 hfjacinto

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Posted 05 June 2019 - 08:57 AM

The scope all set-up for imaging.

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#465 starman876

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Posted 05 June 2019 - 10:59 AM

awesome image.  Got to love the APM 152.  


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#466 hfjacinto

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Posted 12 June 2019 - 11:25 AM

"Why NJ sucks for night sky imaging". It was beautiful all day, super blue skies, not a cloud in the sky, so I set up the 152 for some visual, moon and Jupiter. I did some viewing of the moon for about an hour, looking for the landing sites (based on Astronomy Magazines). And the straight line was also really nice, since I had about an hour before Jupiter would get high enough, I decided to take a picture of the moon. If you look really carefully, you'll see the lower quadrant is a different shade, in the time I started the imaging session (12 separate images), clouds came in and completely obscured the moon, even being super aggressive on the last image, I can notice a difference in color and shading.

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#467 starman876

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Posted 12 June 2019 - 05:21 PM

Great picture.  Wonder what it would look like if bump up the power.  



#468 hfjacinto

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Posted 12 June 2019 - 07:00 PM

Great picture. Wonder what it would look like if bump up the power.


I can send you the full size file it’s around 40 Megs, at 300 dpi you can print larger than 18 by 24.
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#469 Raginar

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Posted 15 June 2019 - 12:09 PM

Awesome picture.
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#470 starman876

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Posted 15 June 2019 - 12:15 PM

I can send you the full size file it’s around 40 Megs, at 300 dpi you can print larger than 18 by 24.

Really, what kind of camera are you using?



#471 starman876

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Posted 15 June 2019 - 12:17 PM

With all this rain I didn't know when to expect a clear night but we finally got one on 6/3. I set up the APM 152 for imaging. With 1200 MM Focal Length I wanted an object that wasn't super small, but not to large so I went for M13.

 

Messier 13 or NGC 6205, is a globular cluster of several hundred thousand stars in the constellation of Hercules.  M13 is about 145 light-years in diameter, and has several hundred thousand stars. M13 is about 22,200 light-years away from Earth.

While we now know that M13 is composed of hundreds of thousands of stars, it wasn't until 1779 that the single stars in this globular cluster were resolved. Compared to the stars in the neighborhood of the Sun, the stars in M13's are more than a hundred times denser. They are so densely packed together that old red stars sometimes collide and produce new stars "blue stragglers" which are billions of years old but look like young blue super giant stars.

 

One interesting fact was that in 1974 a message was sent from the Arecibo radio antenna with encoded information about the human race, DNA, atomic numbers, Earth's position and other information, towards M13 as an experiment in contacting potential extraterrestrial civilizations in the cluster. BUT based on what we know now globular clusters aren’t likely to have many terrestrial worlds due to the interaction of the close stars. And since M13 is moving through space during the transit time; chances aren’t good that the cluster will be in a position to receive the message by the time it arrives.

 

Image was taken with an APM 152MM APO, the camera was an SBIG 8300C, mount was a G11. The focuser on the APM has been motorized by Moonlite. SGP was used for automation (acquisition, guiding and focusing). A total of 100 – 3 minutes images were taken and 91 were used. Maxim DL was used for staking and calibration, Photoshop was used for post processing.

 

Thanks for looking.

are you using a corrector to get such a nice flat field?



#472 hfjacinto

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Posted 15 June 2019 - 01:30 PM

Really, what kind of camera are you using?


DMK41, this image is a mosaic of 12 videos each 500 images each. I selected the best 250 of each run so 3000 images.

#473 hfjacinto

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Posted 15 June 2019 - 01:31 PM

are you using a corrector to get such a nice flat field?


I use the Hotech CSA field flatner but it doesn’t need it for a 4/3 chip. The field is the flattest I have ever seen.



#474 CvBadengoth

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Posted 15 June 2019 - 01:55 PM

....its even flat enough for APSC, I use the ASI071 with it, no problems so far....


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#475 starman876

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Posted 15 June 2019 - 07:57 PM

I use the Hotech CSA field flatner but it doesn’t need it for a 4/3 chip. The field is the flattest I have ever seen.

That is an interesting fact to know.  That ED doublet must be a better lens than a lot of people realize. 


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