Orion Nebula
Mar 11, 2015 00:17:15 #
Little better alignment tonight.
Celestron Advanced VX Go To mount.
Celestron C8 SCT
f/10 fixed
2030mm fixed
ISO 800
15 second single exposure
Prime focus no extensions or tubes.
Celestron Advanced VX Go To mount.
Celestron C8 SCT
f/10 fixed
2030mm fixed
ISO 800
15 second single exposure
Prime focus no extensions or tubes.
Mar 11, 2015 01:07:41 #
GREAT shot!
Now, for 2 'dumb' questions.
Would your 8" f10 'scope capture more light than a 4" f10?
I'm thinking yes.
Do you know the f-value of any of the really big observatory 'scopes, such as Mt. Palomar?
Thanks
Now, for 2 'dumb' questions.
Would your 8" f10 'scope capture more light than a 4" f10?
I'm thinking yes.
Do you know the f-value of any of the really big observatory 'scopes, such as Mt. Palomar?
Thanks
Mar 11, 2015 01:09:38 #
Beautiful!
I have an iOptron GPS, Go To, on my wish list at Amazon.
My idea was to use it to steer my camera and lenses around the sky.
I have an iOptron GPS, Go To, on my wish list at Amazon.
My idea was to use it to steer my camera and lenses around the sky.
Mar 11, 2015 04:11:56 #
Wikipedia list their largest scope as the Hale Telescope a 200-inch (5.1 m), f/3.3 reflecting telescope.
So yes it really pulls in light.
F/ value is derived by dividing the length by the diameter.
As to your other question.
http://oneminuteastronomer.com/10032/choosing-good-telescope-astronomy/
This gives a good explaination. Yes it pulls roughly twice the light.
I hope this helps.
So yes it really pulls in light.
F/ value is derived by dividing the length by the diameter.
As to your other question.
http://oneminuteastronomer.com/10032/choosing-good-telescope-astronomy/
This gives a good explaination. Yes it pulls roughly twice the light.
I hope this helps.
Mar 11, 2015 08:28:22 #
SonnyE wrote:
Beautiful!
I have an iOptron GPS, Go To, on my wish list at Amazon.
My idea was to use it to steer my camera and lenses around the sky.
I have an iOptron GPS, Go To, on my wish list at Amazon.
My idea was to use it to steer my camera and lenses around the sky.
Thank you Sonny.
Don't say I didn't warn you about the perils of astrophotography.
First its the mount then its a new mini hubble of your own.
;)
If the weather holds up, I may play with the 6" Reflector that came with the mount. 750mm tube should give me some nice nebula shots.
Mar 11, 2015 11:18:16 #
SonnyE wrote:
Beautiful!
I have an iOptron GPS, Go To, on my wish list at Amazon.
My idea was to use it to steer my camera and lenses around the sky.
I have an iOptron GPS, Go To, on my wish list at Amazon.
My idea was to use it to steer my camera and lenses around the sky.
The dovetail on this new mount is perfect for my Manfrotto bases.
I am looking forward to playing with this combo at a dark site.
Mar 11, 2015 15:01:43 #
twowindsbear wrote:
GREAT shot!
Now, for 2 'dumb' questions.
Would your 8" f10 'scope capture more light than a 4" f10?
I'm thinking yes.
Do you know the f-value of any of the really big observatory 'scopes, such as Mt. Palomar?
Thanks
Now, for 2 'dumb' questions.
Would your 8" f10 'scope capture more light than a 4" f10?
I'm thinking yes.
Do you know the f-value of any of the really big observatory 'scopes, such as Mt. Palomar?
Thanks
The Lick Telescope (put into service in 1888) on Mt. Hamilton near San Jose has an objective lens that is 36" (3 feet). And the telescope is about 58 feet long. The computes to about F19.3!
And the 8" f10 will pull about 4X the light of the 4" f10. When it comes to stars, the F-stop value isn't so important since they are point sources of light. But for extended objects, and nebula are certainly extended objects, the F-stop does have impact.
What I liked about the nebula picture posted was that no parts of it were overexposed since this can easily happen with such a bright object. It was a perfect exposure.
Mar 11, 2015 16:44:29 #
JimH123 wrote:
The Lick Telescope (put into service in 1888) on M... (show quote)
Thank you very much Jim.
Mar 11, 2015 18:26:24 #
Albuqshutterbug wrote:
The dovetail on this new mount is perfect for my Manfrotto bases.
I am looking forward to playing with this combo at a dark site.
I am looking forward to playing with this combo at a dark site.
That is really cool Jim. Really Cool!!!
Craig
Mar 11, 2015 20:07:08 #
Mar 12, 2015 14:41:03 #
CraigFair wrote:
That is really cool Jim. Really Cool!!!
Craig
Craig
I just wanted you to see how easy the camera mounting is. :thumbup:
Mar 12, 2015 14:44:02 #
guts wrote:
That is a great shot,Seems like your rig is going to work just fine for you.
I don't know what I am doing wrong on my alignment but I get a decent steady hold but the go to is still off. Sometimes a little and sometimes a lot. It might be my powertank is not steady. It's the smaller of the two. I am going to get a beefier battery supply and see if it helps.
Mar 14, 2015 10:00:08 #
Mar 14, 2015 11:03:06 #
Albuqshutterbug wrote:
I just wanted you to see how easy the camera mounting is. :thumbup:
Well, you certainly convinced me.
Now I'm lusting after a monster. As you can see, I'm more of a traditionalist.
But my practical side of my brain is telling me I probably wouldn't use it enough.
But the Tamron certainly isn't cutting it. And my Redfield spotting scope isn't powerful enough (though I can see a small version of Orion's Nebula).
I thought I found Mars the other night. When I blew it up, it looked more like Jupiter. But I was having fun.
Chances are I will most likely just remain to be Uranus dust. :lol:
Mar 14, 2015 21:57:56 #
SonnyE wrote:
Well, you certainly convinced me. br Now I'm url=... (show quote)
I have a 5" 1000mm Orion refractor that I hope to mount either tonight or tomorrow. We shall see what I can see.
;)
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