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Meade 90mm Infinity - Surprisingly Good!

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#1 emflocater

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Posted 02 November 2016 - 10:56 PM

Note: This is just a quick review of the OTA and its objectives performance only and is not a review of the tripod or eyepieces that come with the complete Meade Inifinty 90 mm scope. I used my own eyepiece and my own tripod when I tested the OTA.

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Hi Folks. Had a chance to check out the Meade 90 mm Infinity Refractor the other night. I hate to say it but I bought it a year ago (bought only the OTA from a Seller on eBay) as a grab and go and it sat on my mount in my room and never looked through it  :crazy:. I put this scope on a older non goto CG5 mount that I tore down completely and re-greased. Anyways the Meade Infinity is a 90 mm (3.5") doublet 600 mm focal length f/6.7 refractor. Last week I took the time to collimate the focuser to the optical axis of the objective and collimated the diagonal as well. I did this because I was just killing some time (bored) on a rainy day and because I like to get the best out of a refractor. So finally got motivated to see what this scope can do. I also did add the Orion Accufocus which works fantastic giving me a sharp wiggle free focus, even though the 1.25" focuser is a rack and pinion type. By the way the focuser is all metal which surprised me. 

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My concern was to see how crisp, clean, clear and bright the stars would appear in the semi-fast scope. By the way, unfortunately there was no Moon or Planets to view, but just knowing what the stars would look like would give me a good idea what to expect of the Moon and Planets. I grabbed an older University Optics Volcano Top Japan made 20 mm Kellner eyepiece. This gave me a magnification of 30x.

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I could see some clouds moving in toward the South so I put my attention toward the North, NE. First up was the Double Cluster in Perseus. Wow! I could see both clusters in the field of view and the stars were pinpoints right to the edge of the eyepiece. Crisp, clear and bright with a nice dark background. You could see allot of star separation, even at 30x. Right then and there I knew the scope was a keeper for grab and go. I can see more clouds moving in from the West so I hurried to see Lyra which was about 10 degrees past the Meridian toward the West. First I went to Vega. I was surprised how bright and crisp Vega was in the eyepiece. My concern was if I could see any CA. I was surprised how little there was. It was very controlled but I will wait until I can get a view of the Moon to update further on this. All the rest of the stars in Lyra were pinpoint to the edge. While I was there I decided to see if I could find the Ring Nebula. Found it! Of course no detail at 30x but I could easily see its elongated/circular shape. Not bad for 30x. Clouds moving in quick so I decided to just scan the Milky Way which was right over head. Again Wow. Stars were pinpoints, bright and crisp, with a dark background.

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All in all I will further update as I get the scope out very soon to see the Moon and plan a few double star tests with higher magnification. For those Folks looking for a grab and go scope or a scope to introduce the universe with, be it a novice or advanced observer, you can't go wrong with the Meade Infinity 90 mm. Especially with a price that won't break the bank as a first scope. I give it 2 thumbs up. Below is a few picks of my Meade Infinity 90 mm scope on the older CG5.

Cheers

Don 

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P.S. I did forget to mention that I did get a chance to see the Pleiades which was about 35 to 40 degrees above the Eastern horizon. Man was that spectacular! The stars were just so bright and crisp. Now if I can get my ES AR152mm refractor out which has been sitting on another mount and not looked through yet  :confused:.

Cheers

Don

Attached Thumbnails

  • IMG_2600.JPG
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Edited by emflocater, 03 November 2016 - 11:48 AM.


#2 m1618

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Posted 03 November 2016 - 12:07 AM

I totally know what you mean. I have the 80mm Polaris version listed but while I was trying it out...I was pleasantly surprised. The main downside is the plastic focuser but for the price...not bad at all. Had a similar experience with a SkyWatcher 70 that was on clearance. That 70mm for $70 was just as good visually as a friend's $700 ED...



#3 havasman

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Posted 03 November 2016 - 12:22 AM

It's a whole lotta fun to be surprised at how well something you kinda discounted actually performs. Congratulations,



#4 emflocater

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Posted 03 November 2016 - 12:50 AM

It's a whole lotta fun to be surprised at how well something you kinda discounted actually performs. Congratulations,

Thank you. That probably was why my motivation was slow on checking out how well the scope would do. I assumed for the price that it would be so so, thus my attitude was "when I get to it I'll get to it". Boy was I surprised and yet a little mad because I missed Jupiter, Saturn, and Mars when they were in a favorable position in the sky this past year! So now I look forward to some double star tests and some other DSO's. With Winter creeping up, looking forward to the Orion Nebula. I did forget to mention that I did get a chance to see the Pleiades which was about 35 to 40 degrees above the Eastern horizon. Man was that spectacular! The stars were just so bright and crisp. Now if I can get my ES AR152mm refractor out which has been sitting on another mount and not looked through yet  :confused:.

Cheers

Don


Edited by emflocater, 03 November 2016 - 08:57 AM.


#5 rogan

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Posted 03 November 2016 - 07:28 AM

Going with a metal focuser was the smartest thing that Meade could do. The plastic focuser that Meade used was dreadful. A darn shame because the optics are quite decent.



#6 emflocater

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Posted 06 November 2016 - 11:19 PM

Well had a chance to view the Moon which was first quarter 37%. I did notice some CA on the limb of the Moon but it seemed very controlled and my first impression was how bright, crisp and defined the craters and mountain ranges looked, before I even thought of checking for CA. I won't lie it is there which is expected for an Achro. and of this focal length, but did not bother me one bit. Here is an Afocal picture I took with my 35mm Canon Digital camera. The telescope Magnification is 30x. Understand that looking through the eyepiece the Moon was focused and sharp as a tack...however it was a little tough getting the image focused as good as it was in the eyepiece. I did my best to give you Folks an idea of what the Meade 90mm Infinity can do.

Cheers

Don

Attached Thumbnails

  • 30X with UO 20mm 90mm Meade Infinity.jpg


#7 emflocater

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Posted 09 November 2016 - 11:19 AM

Decided to add tube rings to the scope. I didn't like how long the dovetail was (check pictures on my first original post) nor did I like that the scope, even though very light, was being held on the dovetail with 2 small screws, screwed into the tube body. So for $35 shipped from Agena AstroProducts (received in 3 days) I purchased these 90mm rings. They fit like a glove and surprisingly are very well made for the price! So I cut the dovetail down and added the rings. Now it looks cleaner and is more secure. I also plugged the 2 screw holes in the tube that the dovetail originally was attached to, with some nice chrome hole caps. You can see these chrome caps in picture 2 (middle picture). The caps are located on the bottom of the tube between the first tube ring on left.

Cheers

Don

Attached Thumbnails

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#8 tony_spina

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Posted 09 November 2016 - 01:28 PM

Did you blacken the chrome hole caps?  If not you should to eliminate reflections inside the tube



#9 emflocater

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Posted 09 November 2016 - 07:17 PM

Tony I did using a black sharpie. However the cap barely enters the actual internal part of the tube, basically snaps onto the threads and goes in 3/16".

Cheers

Don 



#10 Sky Muse

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Posted 09 November 2016 - 07:23 PM

Your image looks very good, and I'm certain that the live view is considerably better.  My cameras have never done justice to the views with my own eyes.  Cameras also tend to accentuate false colour, as I've also discovered.



#11 emflocater

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Posted 09 November 2016 - 07:34 PM

Your image looks very good, and I'm certain that the live view is considerably better.  My cameras have never done justice to the views with my own eyes.  Cameras also tend to accentuate false colour, as I've also discovered.

Very true Alan with the false color. Yes the actual view was much better but hey for a quick digital shot it worked well. Thanks.

Cheers

Don



#12 emflocater

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Posted 10 November 2016 - 09:50 AM

Well had a chance to view the Moon which was first quarter 37%. I did notice some CA on the limb of the Moon but it seemed very controlled and my first impression was how bright, crisp and defined the craters and mountain ranges looked, before I even thought of checking for CA. I won't lie it is there which is expected for an Achro. and of this focal length, but did not bother me one bit. Here is an Afocal picture I took with my 35mm Canon Digital camera. The telescope Magnification is 30x. Understand that looking through the eyepiece the Moon was focused and sharp as a tack...however it was a little tough getting the image focused as good as it was in the eyepiece. I did my best to give you Folks an idea of what the Meade 90mm Infinity can do.

Cheers

Don

Did a little Photoshop of the picture with shadow and highlights which now shows what I was seeing through the eyepiece but couldn't quite capture with the camera.

Cheers

Don

Attached Thumbnails

  • 30X with UO 20mm 90mm Meade Infinity NEW 2.jpg

Edited by emflocater, 10 November 2016 - 09:57 AM.


#13 Sky Muse

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Posted 10 November 2016 - 02:56 PM

I've had pretty good luck using a small point-and-shoot camera.  Here are shots of the Moon through my refractors, and taken on the fly, afocally...

 

60mm f/15...

 

070815b.jpg

 

80mm f/6...

 

100115g.jpg

 

Note the false colour.  I did not see nearly as much during the live view.  Also, the camera may have been held at an angle, accentuating it further.

 

102mm f/8...

 

083115e.jpg

 

Incidentally, and in just four more days... http://www.scienceal...nearly-70-years

 

I'm going to do my best and get a good shot of it myself.



#14 emflocater

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Posted 10 November 2016 - 03:28 PM

I've had pretty good luck using a small point-and-shoot camera.  Here are shots of the Moon through my refractors, and taken on the fly, afocally...

 

60mm f/15...

 

attachicon.gif070815b.jpg

 

80mm f/6...

 

attachicon.gif100115g.jpg

 

Note the false colour.  I did not see nearly as much during the live view.  Also, the camera may have been held at an angle, accentuating it further.

 

102mm f/8...

 

attachicon.gif083115e.jpg

 

Incidentally, and in just four more days... http://www.scienceal...nearly-70-years

 

I'm going to do my best and get a good shot of it myself.

Nice Pics Alan! Hey thanks for the reminder of the November 14, 2016 Super-Moon.

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"During the event, which will happen on the eve of November 14, the Moon will appear up to 14 percent bigger and 30 percent brighter than an average full moon. This is the closest the Moon will get to Earth until 25 November 2034, so you really don’t want to miss this one".

Thanks again Alan for the pics and Moon info!!

Cheers

Don




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