Go Back   IceInSpace > Equipment > DIY Observatories
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 09-05-2011, 10:05 PM
Helo's Avatar
Helo (Peter)
Registered User

Helo is offline
 
Join Date: Mar 2011
Location: Caloundra, Australia
Posts: 78
Pier position in dome

OK - I have my pier design sorted now (previous post, steel vs. concrete pier) but as I am fixing a wedge on top this throws the telescope axis off the pier centre. I need to centre the scope in a dome to be constructed so what do I use as the 'centre' of the dome; 1) the new mount position of the base of the scope to the wedge or 2) the position where the fork arm attaches to the scope? I believe it is 1) (the join to the wedge), but also where is the centre of mass of the scope (CPC 1100) and should I then offset the wedge to counteract this and centre it over the pier? Thanks for any help IIS members can offer.
Reply With Quote
  #2  
Old 10-05-2011, 10:47 PM
Gama's Avatar
Gama
Registered User

Gama is offline
 
Join Date: Dec 2005
Location: Melbourne
Posts: 1,121
Make the Dec axis the centre of the dome.
So the scope will be taking up space in the north area.
Then you dont need to calculate any numbers to offsett the dome slit.

So when the scope points directly up, it also points to the centre of the dome (Downwards).

Dont worry about balancing, as long as you bolt it down, it wont go anywhere.

Theo
Reply With Quote
  #3  
Old 11-05-2011, 10:45 PM
Helo's Avatar
Helo (Peter)
Registered User

Helo is offline
 
Join Date: Mar 2011
Location: Caloundra, Australia
Posts: 78
Centre in the dome

Thanks Rally and Theo for your help. I can't wait to get it all started now and get in the dome.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:11 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement