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Parking Lot Shoot-Out - C4.5 vs. C80

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#1 ericb760

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Posted 28 May 2024 - 07:23 PM

I decided to do a side by side comparison of my two recent acquisitions, a C4.5 and a C80, both of which are Vixen's from the mid to late 80's. I used identical Celestron volcano top 18mm EP's from the same era in both, and used the moon as my target. Earlier I had tested collimation on the Newt with a Cheshire EP and, to my untrained eyes, it appeared perfectly collimated.

 

The C80, of course, enjoys almost legendary status around here as being "freaky sharp", and so I anticipated it coming out on top. To my surprise, however, the Newt held its own. The image was a bit larger and a tad brighter and it was extremely sharp. The C80 image seemed a tad bit "cleaner" and with just a bit more contrast and sharpness.

 

Something of note is the absolute rock solidness of the Newt on the Polaris mount.

 

I also tested them on double star Mizar, and they seemed about the same to my eyes. I'm looking forward to repeating this test later this summer on Jupiter and Saturn. In short, the Newt really surprised me while the C80 continues to perform amazingly.

Shoot Out

 

 


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#2 albert1

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Posted 28 May 2024 - 08:56 PM

They are wonderful telescopes, those Vixens. Never had a bad one. Had a C102 that was from another galaxy far far away.
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#3 DouglasPaul

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Posted 28 May 2024 - 09:09 PM

I would have been surprised if the 4 1/2 had not bested the 80mm.



#4 Terra Nova

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Posted 29 May 2024 - 09:21 AM

I had both. They were both fine scopes!

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#5 GeneDiG

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Posted 30 May 2024 - 08:37 AM

I have the later Synta made Celestron Firstscope 114 and Firstscope 80. Despite both of them being on EQ2 mounts, they too are also excellent performers. 


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#6 Bomber Bob

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Posted 30 May 2024 - 11:12 AM

Never cared for the Polaris EQ, but... a C80 on a motorized Mizar SP is a 400x double-splitter...

 

Celestron C-80P S21 - Mizar SP (RS Full).jpg

 

Chinese Hardware with Vixen mirror set (somehow, I wound up with a pair of the latter??)...

 

CV45 - GSO 8x50 RACI Finder S01.jpg

 

Jupiter in this C4.5 Hybrid:

 

C114 - Jupiter 20170110V08Y02.jpg

 

RAO 2x Barlow + Orion SS2 camera, going on 8 years ago.  [Yeah, too much Green... too Many camera settings!  I was just glad to get the oranges & browns.]

 

Again, for the Newbies:   Looking for a 3" Refractor?  Get a C80.  They are dirt-cheap now.  Or, if you're mechanically inclined get a Real C4.5 Newtonian.  Either way, You Win!


Edited by Bomber Bob, 30 May 2024 - 11:21 AM.

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#7 ericb760

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Posted 30 May 2024 - 11:57 AM

Never cared for the Polaris EQ, but... a C80 on a motorized Mizar SP is a 400x double-splitter...

 

attachicon.gif Celestron C-80P S21 - Mizar SP (RS Full).jpg

 

Chinese Hardware with Vixen mirror set (somehow, I wound up with a pair of the latter??)...

 

attachicon.gif CV45 - GSO 8x50 RACI Finder S01.jpg

 

Jupiter in this C4.5 Hybrid:

 

attachicon.gif C114 - Jupiter 20170110V08Y02.jpg

 

RAO 2x Barlow + Orion SS2 camera, going on 8 years ago.  [Yeah, too much Green... too Many camera settings!  I was just glad to get the oranges & browns.]

 

Again, for the Newbies:   Looking for a 3" Refractor?  Get a C80.  They are dirt-cheap now.  Or, if you're mechanically inclined get a Real C4.5 Newtonian.  Either way, You Win!

What don't you like about the Polaris?



#8 Bomber Bob

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Posted 30 May 2024 - 12:03 PM

The 2 that I had were clunky.  Tough to find original Drives for; and, if you do, they're over-priced.  And, they hang off the side - very awkward, and can block some positions.  Vixen, Kenko, & others had better options, with the RA Drive under the forward casting...

 

OTOH:  Easy to use & stable in AZ configuration -- see lots of folks use them that way.




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