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M20 Trifid Nebula in LRGBHa

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Posts Made By: Alex McConahay

September 10, 2011 09:45 PM Forum: Equipment Talk

Selecting a New Setup

Posted By Alex McConahay

You already have two good answers.

And here is the point you don't want to hear---your professional photographer stuff is of good, but limited use. You are ahead of the rest of us in Photoshop, I am sure. And that is particularly true of the post-post processing parts (cleaning up, noise, and such). You have some to learn about stretching the data at the beginning. But, you will pick that up.

It is in acquisition that you will have the most to learn. Get the best mount you can find, as has been mentioned. And start with the widest Field of View (shortest focal length) to learn the tricks of alignment, guiding, etc. I would strongly suggest that you make no decisions at this point regarding a tube. Instead, buy the best mount you can afford (see the previous post) and stick your existing DSLR on it, with whatever camera lens you choose to use. The shorter the easier to learn, although 300-400 mm is well within reason with a quality mount.



Try that for six months while you are deciding what kind of things you want to take pictures of out in space. Get all your mount issues, software, guiding, and all that working automatically. Then it is time for longer focal length exposures.

Alex

September 11, 2011 03:50 PM Forum: AstroMart FAQ

Secret Forums

Posted By Alex McConahay

Lee,

You have been around here for a while, so I am sure you know about the Hide Forums/Display Forums switch in the upper right corner of the Forums window. And I am sure you know about the checkboxes in each Forum area where you can note which Forums you want displayes.

But, I have no idea what you are talking about--what "pull down" menus? (There is one in the search Forums window, but I cannot find any others.)

Alex

September 11, 2011 11:21 PM Forum: Digital SLR AstroPhotography

Hardware questions from a newbee

Posted By Alex McConahay

Certainly can....I do it all the time. (OK, I've done it a few times, but it is simple pie.)

Most mounts use dovetail systems. THe telescope tube is attached to a dovetail (an aluminum rail to which one attached rings, or otherwise attached the telescope tube). This dovetail slides into a female dovetail (the top of the mount). SO, get yourself one of those dovetails things, and put a 1/4-20 screw through it and into the tripod screw hole in the bottom of your camera (or more likely your lens at that length).

Attach the dovetail to the mount, and you are good to go.

Check out the stuff at ADM if you want to locate an adapter. Although if you already own a mount with a dovetail system, all you really need to do is either use an existing hole that can accommodate your 1/4-20, or drill yourself a new one.

Alex

September 12, 2011 12:37 PM Forum: Mounts

PIERS V. TRIPODS

Posted By Alex McConahay

I assume you are talking about portable piers, not permanent installations. Right?

Alex

September 14, 2011 12:54 PM Forum: Digital SLR AstroPhotography

Possible Viewfinder

Posted By Alex McConahay

David,

I understood you were interested in going into astroimaging. If so, you will probably use a laptop computer as your "viewfinder." When it comes to focusing, framing, and such, the large screen helps. You will at times want to take a four or five second exposure, stretch the data, and see how the picture looks before you begin your imaging run. It is hard to do that with a fancy viewfinder alone. Then, when you are all set up and ready to go, you will probably want to acquire your images software that takes a series of exposures and stores them on the computer. This means you will want to have a computer with your imaging stuff anyway.

Alex

September 14, 2011 07:04 PM Forum: AstroMart FAQ

Duration of ads and renewing ads

Posted By Alex McConahay

Check your viewing parameters. YOu can tell the site how far back to go in displaying ads.

Alex

September 25, 2011 03:19 PM Forum: Reflectors

Laser Collmiator for D.K. Cassegraim

Posted By Alex McConahay

Will the Hotech SCT system work with that configuration?

Alex

October 25, 2011 12:32 AM Forum: Solar System Observing

Baader Solar Continuum Filter

Posted By Alex McConahay

Does one use it in addition to the wedge?

I know nothing about it.

Alex

December 15, 2011 10:05 AM Forum: AstroMart FAQ

Ad Keeps Disappearing from Astromart's Classified

Posted By Alex McConahay

It is there now, Darlene.

I do not see any phone number or other contact information that would disqualify it.

Alex

December 25, 2011 02:41 PM Forum: AstroMart FAQ

Message Inbox

Posted By Alex McConahay

Good morning, and Merry Christmas, Clayton,

I just sent you a personal message. You will notice over in the "My Account" window on the left, the Message Inbox has changed to reflect that you have a waiting message. This is what happens when you get something.

If you do not have such a message waiting, come back here and say so. We will figure out what is happening.

Alex