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Lion Nebula SH2-132 - RC71

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Posts Made By: Alex McConahay

September 6, 2010 03:30 PM Forum: Beginning Astronomy?

Alternatives to right angle finder

Posted By Alex McConahay

You have gotten good advice already.

Just to amplify...

Green lasers are not a good idea. Why add light to the sky?

I use Quickfinders and Telrads. I prefer Quickfinders because they are compact, and flash on and off. I prefer Tel-rads because they are slightly easier to see, correct better for parallax, and are more stable (don't move around with a little bump). In use, there is not much difference.

In light pollution, where you cannot see dim stars, reflex finders (red dot, Quickfinders, Telrads, etc) are not as useful for detailed star hopping as a magnifying finder scope since you cannot see the stars you need to star hop.

Alex

September 7, 2010 07:57 PM Forum: AstroMart FAQ

10 Myths About Copyright

Posted By Alex McConahay

Good Information

Alex

September 8, 2010 01:22 AM Forum: AstroMart FAQ

10 Myths About Copyright

Posted By Alex McConahay

Anthony,

I understand that certain words have passed from trademark status to common usage (aspirin, escalator.....) and that others are always about to except for rigorous defense by the companies who own the mark (Xerox, Kleenex).

What do you know about that?
Is it the same kinda thing as the copyright stuff you cited?

Alex

September 8, 2010 03:25 AM Forum: Star Parties

PATS Mt. Wilson Tour

Posted By Alex McConahay

Just updating--we have had several more people register early. If you want to be on this tour, remember it is limited to 25 people.

Don't wait till PATS itself to register.

Alex

October 6, 2010 01:05 PM Forum: AstroMart FAQ

how to use Astromart from Pakistan

Posted By Alex McConahay

The fact that you posted here shows you are using it successfully.

What else do you mean by "using it" in your post?

Have you tried buying or selling something? I would imagine it works just like it does anywhere else, including people's reservations about shipping outside the 48 states.

Alex

October 11, 2010 12:18 PM Forum: Reflectors

Reflector design

Posted By Alex McConahay

Drake,

Before you go buying anythng, be sure to visit a few star parties and see what these things look like up close. See how others use them.

If you are interested in astroimaging, you are best to start with a small refractor on a very good mount.

Alex

October 25, 2010 02:10 PM Forum: Deep Sky Observing

1.25 vs 2 inch diagonal

Posted By Alex McConahay

What size eyepieces do you have?

Alex

November 9, 2010 09:36 PM Forum: CCD Imaging and Processing/Deep Sky

Another California Nebula

Posted By Alex McConahay

I thought mine was nice from the Southern California desert.

How did you get a California Nebula from all the way in Poland, dude?

Your Ha adds a lot.

Alex

November 10, 2010 01:24 PM Forum: CCD Imaging and Processing/Deep Sky

Sharpless 187

Posted By Alex McConahay

Nice picture.

I think the Sharpless objects always give me a challenge. They seem rather dim compared to their starfields.

Alex

November 16, 2010 07:47 PM Forum: Digital SLR AstroPhotography

To Buy or not to Buy?

Posted By Alex McConahay

Very few mounts (in the world) can do eight minutes unguided with a scope of more than a couple of hundred mm focal length unguided. Guided they can probably take exposures for hours on end.

If you are buying it so that you can take five minute unguided exposures, I think you should test their claim first. If you plan to use a guider, then I'll let somebody with more experience with that scope/mount step in.

Alex