Question about Meade Polaris 114EQ-D (36 x 114mm) Telescope

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How do I clean the primary mirror - Meade Polaris 114EQ-D (36 x 114mm) Telescope

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Posted on Oct 13, 2010

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Lube stain on Secondary mirror on CPC 1100


Probably lubricant out-gassing which can collect than drip. Your choices are to contact Celestron service or do it yourself. DON"T PANIC! It is not that hard if you are brave.
1. Use a piece of masking tape on the corrector to the side of the housing.slice it carefully where they meet. This will insure correct alignment with the primary when you put it back together. (Correctors are sorted then oriented to,(as the name says) correct the primary.
2. Remove the corrector plate. Mark any shim locations with a marker on the outside of the corrector plate (remove after re-installation)
3. Make a solution of 50% distilled water and 50% isopropyl alcohol. (97% pure or better- I use 99% pure alcohol) 1 drop of dish detergent may need to be added,depends on the stain.
4. Rinse the secondary until grease is gone. Do not rub mixture on mirror, just keep rinsing.
5. Rinse with pure distilled water,gently stand corrector up to dry.
6. Assemble the scope. Use the same water/alcohol mixture to clean up the outside of the corrector. Dampen cotton balls and wipe with VERY light pressure.Wipe once, throw the cotton ball out and use a fresh one. Do not make the cotton balls too wet, you don't want moisture to get under the corrector.
7. If the stain is really tough, acetone may be used without damage to the mirror surface.
8. Use surgical gloves to avoid fingerprints.
9. Lots of towels at work area in case the corrector slips out of your grip.
10. If you put it together correctly, minimum collimation will be required.
There have been a number of these problems cropping up lately, I think Synta is using inferior grease now.If you are really brave, clean the old grease
off and add one drop of lithium grease. Run the primary through focus range a few times to distribute.
If you do this, you can later flock the inside of your scope to increase contrast.

Dec 29, 2011 | Celestron CPC 1100 GPS (XLT) (70 x 280mm)...

1 Answer

I can't find any documentation on how to remove the primary mirror for cleaning. I'm a newb and don't want to mess anything up. Thanks, Bob


First -- how do you know the mirror needs cleaning? Did you shine a flaslight down the tube and see some dust? Never use a flashlight to determine if a mirror is dirty-- they are ALL dirty when you use a flashlight to check them.

Only clean the mirror if it is interferring with the views through the scope.

There is a ring around the back-- remove those screws and the mirror should come out-- don't driop it! Then remove the mirror from the mirror cell.

Sep 03, 2011 | Celestron Advanced C10-NGT (600 x 254mm)...

1 Answer

My boy put coins in the eyepiece receptable and damaged or dislodged the mirror. Can this be fixed?


Yes there are two mirrors-- the small secondary underneath the focuser and the large primary-- on the bottom.

You can remove the entire secondary "spider" and then glue the secondary back on using epoxy or silicon.

Then put it back in an collimate the scope. If the primary mirror is damaged then it is not worth repairing.

http://www.andysshotglass.com/Collimating.html


www.telescopeman.org
www.telescopeman.info
www.telescopeman.us

Jul 14, 2011 | Celestron AstroMaster 114EQ (100 x 114mm)...

1 Answer

Hi i just want to asked y my output xerox paper is getting dark? What is the problem on my unit?


first of all do a service of your copier machine and clean all mirrors and lenses and the main glass.
then clean the chargers, transfer charger and primary charger. Primary charger is placed in Drum unit, clean the photo-conductive drum and its cleaning blade.
this may be useful for you

Mar 11, 2011 | Ricoh Aficio 2018D All-In-One Laser...

1 Answer

How do I clean the primary mirror it has smudges


Watch this video:

http://vimeo.com/channels/tas

It's the second one down from the top-- cleaning a telescope mirror.

Aug 31, 2010 | Meade DS-2114 ATS (325 x 114mm) Telescope

1 Answer

I have a Tasco 302911 (Old model) D=114mm F=500mm that has been sitting around in the closet for some time. Has become dirty from sitting around and would like to clean up and adjust as required. Would...


The only thing fragile are the main primary mirror and the smaller secondary mirror anything else can be cleaned with Windex and or Pledge.

To learn how to clean the mirrors read this:

http://www.astro-tom.com/tips_and_advice/cleaning_optics.htm#article1
The mirror should be VERY dirty or leave it alone.

You must do this gently or you will scratch the mirror. Once the mirror is clean you will need to re-collimate the scope. Watch this video:
http://www.andysshotglass.com/Collimating.html:

Aug 03, 2010 | Tasco Galaxsee 46114500 (500 x 114mm)...

2 Answers

Dirty primary mirror


Nice telescope! I clean mine with a dust blaster, those canned air things.They are cheapest from Sam's Club, if you have those near you.Be careful if you decide to use swabs, you may scratch the mirror or remove the special coatings on the mirror.Try the canned air first.If you do use a swab, exercise great care.Use nothing metal.Maybe a long plastic spatula with a soft , lint free cloth.No solvents.Good Luck

Mar 25, 2009 | Meade 8" LX90 LNT Schmidt Cassegrain...

2 Answers

Primary reflector became dull with time.


The primary mirror is VERY delicate -- first surface mirror. Without a doubt you damaged it using auto polish. Mirror are cleaned very very gently using running water and alcohol-- and a tiny amount of dish soap... here is an article--
http://www.dvaa.org/ATM/MirrorCleaning.html

You can buy mirrors --- but they will be almost as expensive as a new telescope.

Jan 09, 2009 | Meade Polaris 114EQ-D (36 x 114mm)...

1 Answer

Canon EOS 300D Loose primary mirror


Absolutely. Glue away. These mirrors of course in no way effect image quality, but you still want to be careful with the glue, and make sure the mirror stays aligned so it's free to flip up.
Hope this helps

.

Jul 06, 2008 | Canon Digital Rebel / EOS-300D Digital...

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