Thankyou all for the good advice.
tempestwizz and
Garyh, I will take your recommendation on board. I have emailed
deepsky.cia.com.au so I'll wait for the reply. If anyone knows of another company in Australia, tell me as I prefer to buy here
I have also been recommended
Pegasus Optics by
aerobrake, so they will have an email sent off to the this week.
Ostahowski Optics are recommended and used by SDM telescopes and their are a lot of satisfied customers who own their telescopes.
Obviously, I should specify the diameter and focal length I require but is there anything else I should specify to a prospective supplier?
Also, apart from price, what information should the give me in regards to their product? Specifications? guarantees?
I get the feeling that I will get a better quality product from a company who individually makes the mirror, rather than a mass-produced line?