proper GEM

What is the minimum I have to spend to get a sturdy, well made GEM to do
necessary tracking for deep sky object astrophotos? I suspect 1000-1500.

rock mananov wrote:
What is the minimum I have to spend to get a sturdy, well made GEM to do
necessary tracking for deep sky object astrophotos? I suspect 1000-1500.


The tracking isn't the problem. Generally it must be guided ........
very few mounts can do 10 to 20 minute unguided exposures.


Bill


--

William R. Mattil

http://www.celestial-images.com

On 10 Öåâ, 16:24, "rock mananov" wrote:
What is the minimum I have to spend to get a sturdy, well made GEM to do
necessary tracking for deep sky object astrophotos? *I suspect 1000-1500.

rock mananov wrote:
What is the minimum I have to spend to get a sturdy, well made GEM to do
necessary tracking for deep sky object astrophotos? I suspect 1000-1500.



Have a look at this page with lots of astronomy information including a
link to measurements of the periodic errors in various cheap & expensive
mounts.

http://demeautis.christophe.free.fr/


regards

Ian

rock mananov:

What is the minimum I have to spend to get a sturdy, well made GEM to do
necessary tracking for deep sky object astrophotos? I suspect 1000-1500.

That's a reasonable estimate without goto. Think Losmandy.; superb
value for the price.

Davoud

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm

rock mananov:
IT's IN FRENCH !!

Bien sûr, imbécile. L'auteur est un Français. Vous avez un problème
avec ça?

Davoud

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm

Try selecting English from 'Google Translate' at the top of the page
(needs scripts enabled).

http://demeautis.christophe.free.fr/

rock mananov wrote:
IT's IN FRENCH !!