Perennial subject, Hubble Optics.
Posted 22 January 2013 - 04:35 PM
After an obscene amount of foul weather here in southern England, I decided to join the namesake forum.
I have currently been trying to get the latest low down on the activities of Hubble Optics. For the most part searches have brought me here time and again, but nothing I can gather, of recent. I have also noticed a pattern. Apparently superb mirrors versus dreadful ones and a lot of mediocre inbetween. People also appear to fall into camps. The 'ask-holes' ( hands up, that probably includes me ) who seek the justification to buy these inordinately cheap mirrors,those who just see the worry words "Chinese and E bay" and others who seek near impossible perfection.
Please forgive me if I have not noticed a more recent and relevant post on the subject. I don't want to come across as the lazy newcomer seeking other to do his research, but my own searching has taken me so far and I would enjoy the fresh perspective you clever bunch can give me.
Posted 22 January 2013 - 09:35 PM
Posted 22 January 2013 - 09:38 PM
Posted 24 January 2013 - 10:14 AM
Posted 15 February 2013 - 01:58 AM
Posted 15 February 2013 - 01:26 PM
I'd like to know that myself, as I'm thinking about the 14 inch, too. I am one who bought one of these (a 10 inch) several years ago, and it turned out to be a dog: about 1/3 to 1/2 wave. Still, I had it re-figured to better than 1/10th and the total cost was far less than buying a premium mirror. My question has been about the issue of re-figuring a sandwich mirror. Is it doable? Has anyone had experience with this?
Posted 15 February 2013 - 01:42 PM
I plan to update my Hubble Optics build thread once I get all the kinks ironed out, I don't like to post an opinion of the mirror until I"ve done everything possible to allow it to perform its best.
Are you thinking of building a scope with an HO optic?
I just checked the Hubble Optics store on Ebay, they are still quoting the +.98 strehl numbers there.
Posted 15 February 2013 - 01:44 PM
Posted 15 February 2013 - 01:55 PM
...My question has been about the issue of re-figuring a sandwich mirror. Is it doable? Has anyone had experience with this?
It would be interesting to ask this question of the opticians know to do refiguring (Swayze, Zambuto, OWL, etc,. etc.) to see if they have done sandwich refiguring and what their views on the matter are.
Posted 15 February 2013 - 02:12 PM
Posted 15 February 2013 - 10:17 PM