Image of the day

Captured by
Steven Yu

Triangulum Galaxy

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Gary Carter

March 31, 2004 02:28 AM Forum: CCD Imaging and Processing/Solar System

Newby Looking for a place to start

Posted By Gary Carter

I second Ivan & Joe's suggestion. Shoot the moon first and get comfortable imaging craters and learning to point your scope, focus the image, and play with the camera settings. Try it without and then with the barlow. Learn how to re-focus when the barlow is in and out. After you've mastered that try your hand at Jupiter. It's a challenge at first finding the planet (turning the gain up high when searching for it makes it easier to spot and center). When focusing the planet, either use one of the nearby brighter stars or a Jovian moon, (again gain up high to find and center it, then back gain down to focus it as sharp as possible, then set the gain up high to find and center the planet.)

March 31, 2004 02:34 AM Forum: CCD Imaging and Processing/Solar System

SCT question

Posted By Gary Carter

The mirror position is what is causing the effect you point out. You can effectivly "reverse" this by putting a spacer between the Barlow and the camera (i.e. a flip-mirror or filter wheel). You'll have to work out the math to figure out how this affects the overall scale.

March 31, 2004 02:37 AM Forum: CCD Imaging and Processing/Solar System

Saturn and moons...

Posted By Gary Carter

Neat shot Dwight!

April 2, 2004 04:27 AM Forum: CCD Imaging and Processing/Solar System

Processing question

Posted By Gary Carter

Vince, This effect can sometimes be minimized by laying in a number of points on the Gamma curve in the Imaging Processing window and making small +/- adjustments, especially at the lower/left area of the curve. You also might play with the Wavelet filter by tweaking the unsharp mask seed incrementally around the outer edge (+/- 1)

April 4, 2004 06:47 AM Forum: CCD Imaging and Processing/Solar System

Light Polution Filters - Which?

Posted By Gary Carter

Hi Steve, The OIII and LP-1 are for visual use, not for imaging. Light pollution is not dealt with in CCD imaging using these types of filters. When you image using an astronomical CCD camera such as your SXV-H9, it is dealt with through very specific imaging and processing techniques. Read Jim Burnell's paper on the subject at wwwjburnellcom/CCDSeminars.html or in the book "The Handbook of Astronomical Image Processing" by Richard Berry and Jim Burnell

April 7, 2004 08:19 PM Forum: CCD Imaging and Processing/Solar System

Blue Festoon Alley

Posted By Gary Carter

Gave me a shiver and made me weak in the knees reading this Vincent. I think I've suffered a bit of mental anguish here...

Great shot !!

April 7, 2004 08:33 PM Forum: CCD Imaging and Processing/Solar System

Apologies to Astronomers in Arizona

Posted By Gary Carter

Paul just pack it all up and send it to me (Texas). We need the rain, and if I have to take a C9.25GPS to make that happen, well, a man has to do what a man has to do, eh? ;-)

April 29, 2004 04:49 AM Forum: CCD Imaging and Processing/Solar System

Time Signal on Webcam

Posted By Gary Carter

If you have the capability to receive WWV (a shortwave receiver with the audio out fed to the computer audio in) you could record an audio timestamp on the audio channel stored in the .avi, however beware, some astronomical post-processing applications have difficulty with this being present in the .avi. But in your case you may not be concerned with this issue. I'd perform a test by recording audio on a sample .avi and then performing any/all post processing steps you intend to perform on the transit video to insure this was not a problem.

June 4, 2004 12:03 PM Forum: CCD Imaging and Processing/Solar System

AIP4Win Features?

Posted By Gary Carter

Steven,

I agree with Joe on AIP4WIN being the best reference available. The software included with it will help you with many processing tasks and the book will provide you with the theory behind it in very understandable terms. It is a must-have IMHO.

Astroart, which I have also begun to implement, also has some of the same processing capabilities as AIP4WIN but without the reference material to help you understand the theory. In addition, there is extensibility through plugins to help automate many of the tasks. For example, with a plugin available on the website for the SXV-H9 camera, it essentially eliminates the need to use the SXV-H9 acquisition software and allows you to script the acquisition steps. Take a look at the website for more details.

June 9, 2004 11:33 PM Forum: CCD Imaging and Processing/Solar System

K3CCDTools Won't Recognise ToUCam Pro II

Posted By Gary Carter

I have occasionally had this same issue after running K3CCD without the camera attached.
Try going to "Video Capture" and tick "Microsoft WDM image capture".