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

Acetone to remove reflective center spot?

  • Please log in to reply
2 replies to this topic

#1 DavidC

DavidC

    Apollo

  • -----
  • Posts: 1415
  • Joined: 24 Nov 2005
  • Loc: Mesa, Arizona

Posted 08 April 2013 - 05:34 PM

On my 8 inch, f7.4 Mike Spooner mirror, there is a white 1/4 inch diameter reflective spot that I want to remove so I can use a return laser beam to collimate. Now I use a cheshire-sight tube to collimate this scope with, but I want to get more accurate. Right now it does not reflect a laser beam good enough to use as a return beam. Would using acetone w/ q-tips remove the reflective material so I can get down to the mirror surface?
Thanks, David

#2 starman345

starman345

    Wait, I'm Thinking

  • *****
  • Posts: 9325
  • Joined: 06 Jul 2010
  • Loc: New Brunswick, Canada

Posted 08 April 2013 - 05:59 PM

I've never tried removing one myself but was reading here about others experiences.

#3 nevy

nevy

    Viking 1

  • *****
  • Posts: 758
  • Joined: 07 Feb 2012
  • Loc: UK

Posted 08 April 2013 - 08:14 PM

Yes it would , also isopropyl is good.


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


Recent Reviews


Imaging/Sketching Contest






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics