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How To Put a Meade 5000 on a Diet!

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#1 starpal

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Posted 28 January 2008 - 10:29 PM

A few advantages are:

1. Lower weight, obviously. This to help some at keeping Dobs from bowing over or binoviewers snapping off their holders :lol:

2. Easier eye placement at the eyelens due to little or no nose clearance issues from overly large diameter eyepiece top and side areas. This makes for a better and more impressive viewing experience!

3. The ability to binoview with especially nice model selections that would otherwise be too imposing for proper nose clearance and interpupillary spacing of the eyes to get at them.

4. Greater room in ones eyepiece case for MORE oculars! :cool:

A few disadvantages are:

1. Working to take apart ones expensive eyepiece(s). This doesn't need be as bad as it sounds. For one, the steps are simple in this case using one small jeweler's screwdriver.

2. Working around the yucky clear grease that is meant to help facilitate eyecup height adjustments. This is not that bad either if one goes slowly and keeps away from the eyelens. The cap can be left on the barrel end. If grease did get on the glass it can be carefully cleaned off again but it is more work than removing eyelash goo, etc.

3. Finding suitable replacement eyepiece lens caps for the top end of newly configured eyepieces. In this case there are some great ones available for use with revised Meade 5000 series 26mm Plossls (42mm dia.) and 24mm Super Wide Angles (48mm dia.). They are available from Gavin Warnes:

eyepiece caps

Surely there are more caps around somewhere for purchase for other focal length Meade series 5000 eyepieces one would wish to revise. Another worthwhile approach of course is to "make" your own :)

Ok, here is where the helpful pictures come in... :yay:

#2 starpal

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Posted 28 January 2008 - 10:42 PM

1.25" Meade 5000 26mm Plossl:

Left - complete
Right - with rubber outer cover pulled off

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#3 starpal

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Posted 28 January 2008 - 10:47 PM

Removing the screw at center of the nylon bushing that the helical cut groove slides over. A small jeweler's flat head screwdriver is used for this.

Note: immediately put the screw and bushing away in a safe place because it is small and greasy and like a jumping cactus will "stick" to something and then jump away for good!

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#4 starpal

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Posted 28 January 2008 - 10:49 PM

The movable outer sleeve now lifted off and removed from the lens housing.

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#5 erik

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Posted 28 January 2008 - 10:52 PM

Cool! I'd heard that this was possible before, but hadn't seen anyone actually do it. I'd like to see someone do this to the 30mm 5000 UWA and weigh them before and after. It would be interesting to see how much weight was removed. :)

#6 starpal

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Posted 28 January 2008 - 10:53 PM

Grease wiped off the remaining eyepiece housing with sections of paper towel and posing the new creation side-to-side to the old fat one :jump:

Note the new eyepiece top lens cap I found for it in my stuff! :cool:

Eyepiece weight reduction from approx 9 ozs. to 7.25 ozs.
and waistline down to 42mm! :D

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#7 starpal

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Posted 28 January 2008 - 11:01 PM

Hi Erik,

My thoughts exactly. However, the next best thing is coming up in my series of images...the 24mm UWA :shocked: There will be some weight reduction data included below but the cheap plastic kitchen scale I have here at my disposal is junky. At any rate, there is some reasonably useful correlation data to be gleaned from the 24mm against the 30mm since they are scaled designs!

#8 starpal

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Posted 28 January 2008 - 11:04 PM

The Meade 5000 26mm Plossl setting outside its body armor. Or is that some sort of wetsuit? :question: ;)

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#9 starpal

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Posted 28 January 2008 - 11:08 PM

Alrighty now ! Time for the WONDERFUL 1.25" Meade 5000 series 24mm Super Wide Angle ! Diehard binoviewer users are sure to be excited at this point. :roflmao:

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#10 starpal

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Posted 28 January 2008 - 11:12 PM

Outer covering and color trim ring removed by having worked the rubber part upward till it slid off the movable sleeve.

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#11 starpal

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Posted 28 January 2008 - 11:16 PM

In the case of the 24mm eyepiece, the eyepiece lens housing is lifted upward and out of the movable outer sleeve.

NOTE 1: my gripping it with a swath of paper towel since it is coated with light grease and would be a bit too slippery to lift. Hold the outer sleeve down with the other hand.

NOTE 2: be sure to wipe grease off these eyepieces in a clockwise direction as to not loosen the barrel and potentially flop out those precious lenses! :foreheadslap:

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#12 starpal

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Posted 28 January 2008 - 11:19 PM

The three major assemblies of the 24mm SWA side-to-side.

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#13 alanon

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Posted 28 January 2008 - 11:22 PM

Just like Erik, I too am wondering about the weight loss this actually yeilds? Pretty brave of you to try though. :)

#14 starpal

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Posted 28 January 2008 - 11:22 PM

The Naked Eyepiece Truth. :shocked:

48mm Dia. and approx 5 ozs. shed from the 24mm SWA. :D

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#15 erik

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Posted 28 January 2008 - 11:23 PM

Wow- very cool. Nice work!!! :cool:

#16 alanon

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Posted 28 January 2008 - 11:24 PM

Now that is Thinner!

#17 starpal

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Posted 28 January 2008 - 11:27 PM

A reference against a Garrett 23.9mm WA model that is from their binocular telescope. It is same size and look to the old Meade series 4000 24.5mm SWA. Wondering if the Chinese manufacturer was actually given one to copy! :question:

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#18 starpal

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Posted 28 January 2008 - 11:35 PM

Oh Boy ! Now things are looking WIDER...

But then they get SKINNY !!! :lol:

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#19 starpal

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Posted 28 January 2008 - 11:37 PM

The old and New of the New Meade 5000 18mm UWA.

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#20 starpal

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Posted 28 January 2008 - 11:39 PM

A rather heavy (actually only about 5 ozs.) burden lifted off its shoulders.

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#21 starpal

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Posted 28 January 2008 - 11:48 PM

A nice looking pair of 18mm Ultra wides that are....

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#22 starpal

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Posted 28 January 2008 - 11:51 PM

....now ready for some binoviewing!!!

Over a half pound weight reduction realized! :cool:

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#23 starpal

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Posted 28 January 2008 - 11:54 PM

Found a pair of #337 caps that snapped onto the tops as makeshift (or permanent) means to keep eyelenses clean until I can locate or make some with 46.7mm I.D. for the major body diameter.

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#24 starpal

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Posted 29 January 2008 - 12:12 AM

For the fine folks following this as it is initially being posted, be sure and go back and find the weight and measure and procedure data I added in farther up the thread.

Next up...the one everyone has been waiting for! :4 :gotpopcorn: :tomatodance: :smarty:

#25 Starman1

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Posted 29 January 2008 - 12:16 AM

Such a great idea (use a label maker to re-label the focl lengths)!
The 30mm's eyecup is absolutely huge--I'd bet a half pound savings when removed.
These huge eyecups just aren't justified.






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