Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_supernovae_remnants.thumb.jpg.0a6deb4bf0886533629e2bdc08293bc9.jpg

  • entries
    34
  • comments
    170
  • views
    35,445

big dilemma

crashtestdummy

1,221 views

Well I have now done about 15 hours polishing with nearly 10 hours through centre and I still have the same problems as before when the ronchi image flips through.when looking at the ronchi I don't get the same obvious centre circle as before but still showing the centre astigmatism.I'm pretty much doomed to going back to the tile tool and doing a few hours with 600 alu oxide to get it back on track then start polishing again.I could keep polishing but if it's not changed after nearly 10 hours I think it will be quicker to go back to 600.the only other option is to polish out which Wil probably be another 6-8 hours then try and sort it when figuring with the smaller tool.

I'm erring towards gojnng back to 600 at the moment.

Pics to follow



5 Comments


Recommended Comments

if you have it somewere near why not get it finished/figured by john nichol it will still save you ££££££. just a thought

Share this comment


Link to comment

Not an option fella,I have to do it myself.it was John who said i should polish for a bit then go back to 600 if the astigmatism didn't polish out

Share this comment


Link to comment

Shame that Rich. I need to send some Ronchi images to John see how he thinks mine should progress? I am thinking of ordering the ply and truss poles for delivery next week fella so will be able to make a start on the dual build so I'm sure you'll have the mirror sorted before its finished!

 

Damian

Share this comment


Link to comment

Mirror making still being done then I thought that art died out years ago

Still very much alive and being taught by those that don't want our history to disappear

Share this comment


Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×

Important Information

By using this site, you agree to our Terms of Use.