questions

Astronomy.com Forums » Equipment » Amateur telescope making » questions

Astronomy forums are FREE. If you wish to participate you must LOGIN | REGISTER.

Amateur telescope making

Design ideas, mirror grinding tips, homemade dew zappers, and more

questions

Last post 07-13-2006 11:14 PM by Largesarge. 8 replies.

Sort Posts:

Page 1 of 1 (9 items)

07-08-2006 02:21 PM

Andiefan Joined on 07-08-2006 Posts 2	questions Hi, I'm planning on building an f/4.7 10" Dob. I've got some questions for those who have answers. How do I go about successfully finding the correct secondary mirror size? Which spider is better - spiral or straight? What are some good eyepieces out there along the lines of the old RKEs? I've been out of amateur astronomy for @15 years. sean
	Contact

07-08-2006 08:19 PM In reply to

tkerr
Joined on 01-02-2004
Earth
Posts 10,645

Re: questions

Will this help?
http://home.att.net/~dale.keller/atm/newtonians/newtsoft/newtsoft.htm

Have A Nice _________

Signature

Have A Nice ...
Tim Kerr
Healthy mind - healthy body - healthy earth.
Ad astra
Ad eundum quo nemo ante iit
Jacksonville, NC.

Equipment:
Orion XT10 Classic, Celestron C6 R-GT w/updated CG5 GT mount, C80ED
Canon EOS 350D, Canon EOS 50D, Meade DSI II Color CCD, Phillips SPC900NC

Contact

07-10-2006 02:21 AM In reply to

Webster Telescopes Joined on 05-28-2006 Detroit MI Posts 112	Re: questions Straight spiders have less total diffraction, that's why professional observatories use them. Good eyepieces for a scope of that speed would be the Nagler line from Televue. They have the correction you would be looking for. Signature Eric Webster www.WebsterTelescopes.com
	Contact

07-10-2006 02:32 PM In reply to

Andiefan Joined on 07-08-2006 Posts 2	Re: questions Thank you for the replies. The info is great. sean
	Contact

07-11-2006 11:54 PM In reply to

Largesarge Joined on 02-24-2006 Coastal Oregon Posts 93	Re: questions NEWT won't run on XP. Signature Ye Old Sarge 45°27'17"N/123°51'12"W The "star" we look at tonight may have exploded millenniums ago. (To progress, we must discern what exists and what does not).
	Contact

07-12-2006 01:17 PM In reply to

Webster Telescopes
Joined on 05-28-2006
Detroit MI
Posts 112

Re: questions

Largesarge wrote:
NEWT won't run on XP.

Just hit "ignore" when the box comes up, it runs fine after that.

Signature

Eric Webster

www.WebsterTelescopes.com

Contact

07-12-2006 01:37 PM In reply to

Largesarge Joined on 02-24-2006 Coastal Oregon Posts 93	Re: questions Eric: Nope, My Xp home (patched, updated) won't run it. It must be one of those automatic updates that's gumming up the works. Signature Ye Old Sarge 45°27'17"N/123°51'12"W The "star" we look at tonight may have exploded millenniums ago. (To progress, we must discern what exists and what does not).
	Contact

07-13-2006 09:54 PM In reply to

Webster Telescopes Joined on 05-28-2006 Detroit MI Posts 112	Re: questions Ok, then dowload this diag calculator: www.wodenoptics.com Signature Eric Webster www.WebsterTelescopes.com
	Contact

07-13-2006 11:14 PM In reply to

Largesarge Joined on 02-24-2006 Coastal Oregon Posts 93	Re: questions That works, much grass. Signature Ye Old Sarge 45°27'17"N/123°51'12"W The "star" we look at tonight may have exploded millenniums ago. (To progress, we must discern what exists and what does not).
	Contact