Quote:
Originally Posted by glend
Alex, The metal tube version of the GSO RC12 will be subject to tube expansion affects due to thermal changes, which affect focus etc. There is no carbon fibre tube version available in Australia. You can buy the carbon tube based version from Teleskop-Services in Germany,
https://www.teleskop-express.de/shop...rbon-tube.html
If you have to have the carbon tube version it might be worth asking Luke at Andrews if they can import one for you. The cost of importing one from TS, given shipping, and GST, maybe more expensive than just opting for the locally available truss version.
I note that the AUD exchange rate has improved lately, over 70 cents US, which might help getting one from Andrews. Worth asking in my opinion.
A much lower cost option might be to just buy the bare 12" pre drilled carbon tube from TS, at around 570 euro, and move the metal tube components across to the carbon tube. In this scenario you would buy the GSO RC 12 metal model from Andrews to get all the mirrors, carriers, spider, etc, and just install those items directly into the TS tube.
https://www.teleskop-express.de/shop...rotech-12.html
Just an idea, which i had considered for a large GSO Newt conversion. |
Your can read my mind I swears.
I have been on Telskop site this morning and noticed the carbon fiber tube ..I thought it was possible to replace the metal tube but I got sidetracked without looking very deeply to see if it was really what I thought it was...but it is you say..that's great..I have been thinking about the temp changing but notice of late here the temp does not seem to fluctuate..it's freezing all night..but I am well sheltered here so maybe fluctuation is not too bad...I could make a carbon fiber tube myself..it is only fiber glassing using carbon fiber mat rather than glass matt ( which after years of boat life I am rather handy at)...making a mould is not beyond me...but these days I probably would just buy one..although making one I could incorporate the baffled dew tube .Perhaps first get the metal tube version, do some visual and get a feel for it before I spend money on it, take some photos using a guide scope rather than OAG see if I can manage collimanation etc, and if ok and needed go for the tube and focuser...even leave reducer until going for final set up photograph the Moon to get a feel.
And I will do as you suggest and see where Andrews stand re carbon fiber tube..they may already have plans regarding getting them in even..Will they will after I chat to them
Thanks for you suggestions and input I really do appreciate your help as you know.
Alex