Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

$7.50 Meade ETX-60! How to clean mirror?

  • Please log in to reply
6 replies to this topic

#1 smilingmoose

smilingmoose

    Explorer 1

  • *****
  • topic starter
  • Posts: 86
  • Joined: 12 Jun 2019
  • Loc: Colorado

Posted 07 December 2019 - 11:05 PM

Picked up this little beauty on half off day at the thrift store and was wondering how do you all clean the mirror on this?  I can see the dust when i lift the eyepiece out.

 

Thanks!Meade_60.jpg


  • icee_stars likes this

#2 icee_stars

icee_stars

    Lift Off

  • *****
  • Posts: 12
  • Joined: 23 Aug 2006
  • Loc: USA

Posted 07 December 2019 - 11:52 PM

What a deal, congrats!
This may be overkill but Dr. Clay has some good tips:
http://arksky.org/as...cleaning-system



#3 Jon Isaacs

Jon Isaacs

    ISS

  • *****
  • Posts: 81,917
  • Joined: 16 Jun 2004
  • Loc: San Diego and Boulevard, CA

Posted 08 December 2019 - 05:31 AM

Picked up this little beauty on half off day at the thrift store and was wondering how do you all clean the mirror on this?  I can see the dust when i lift the eyepiece out.

 

 

I would start out by just using it.  Dust is not that big a deal.

 

Otherwise, care is needed because mirror is a first surface mirror can be scratched.

 

Jon



#4 mclewis1

mclewis1

    Thread Killer

  • *****
  • Posts: 19,569
  • Joined: 25 Feb 2006
  • Loc: New Brunswick, Canada

Posted 08 December 2019 - 08:19 AM

Turn it over and use a blower and soft brush to remove the dust. Do this with the mirror opening facing downwards to allow the now airborne dust a place to go. 


  • smilingmoose likes this

#5 smilingmoose

smilingmoose

    Explorer 1

  • *****
  • topic starter
  • Posts: 86
  • Joined: 12 Jun 2019
  • Loc: Colorado

Posted 08 December 2019 - 08:32 AM

That's a good idea. I'm used to cleaning mirrors on the dob and reflector so never with this type. Thanks!

#6 Napp

Napp

    Surveyor 1

  • *****
  • Posts: 1,815
  • Joined: 26 Jul 2015
  • Loc: Florida, USA

Posted 08 December 2019 - 09:55 AM

I would read this before thinking about cleaning the optics:

 

http://weasner.com/e...s/cleaning.html



#7 mclewis1

mclewis1

    Thread Killer

  • *****
  • Posts: 19,569
  • Joined: 25 Feb 2006
  • Loc: New Brunswick, Canada

Posted 08 December 2019 - 03:06 PM

The little mirror in question here is basically a built in diagonal setup. While I'm not certain I'd be surprised if this wasn't just a multi coated first surface mirror like those in the thousands of 1.25" diagonals out there. As such it should be pretty tough and won't be quite as susceptible to being scratched like some primary mirrors.

 

Even in an inexpensive scope like the ETX 60 I'd still be somewhat careful in the cleaning. So mostly just blowing and maybe a little light brushing to get those stubborn particles, and no liquid/cloth work unless there was something big and ugly stuck on the mirror.




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics