Mars

This was taken at 11:47 PM CDT on 8/30/03 by Wayne Coskrey at Rainwater.

"Seeing was poor with intermittent clouds.  I used a Philips ToUcam Pro webcam at prime focus on the Celestron 14 at Rainwater Observatory.  This image was stacked using K3CCD software from 50 of the best frames out of 248 taken at four frames a second, each at 1/500 second exposure.  After stacking the image I processed the image with unsharp masking and then adjusted gamma, contrast, and brightness using Corel Photopaint 10. The image on the right is from Mars Previewer II software showing what should have been visible on Mars at the time the images were taken."


Also by Wayne Coskrey on 9/9/03.

"The sky looked so good, even with all the humidity, that I couldn't resist making a try at some more Mars photography.  I was finally able to have the time to experiment and make sure I had all the settings right on the webcam this time.  I found that I had set the gain pretty high on the photos I took on August 30th, so I took the gain down to its lowest setting last night.  This brought the maximum exposure down from 1/500 sec. to 1/33 sec.  This kicked the noise level way down.  The photo I'm attaching was taken at 12:18 am this morning, near the time Mars was at culmination, and you can see that there is a ton more detail visible.  The color is more washed out, but I've got many more different exposures, and I may have a better combination of detail and color on one of the other exposure runs."


This was taken on September 15, 2003, by Wayne Coskrey at Rainwater.

"Last night's result was a little bit of a compromise.  With the clear skies and somewhat smaller disc, the best exposure for Mars turned out to be somewhere between 1/33-sec. and 1/66-sec.  I ended up having to set the exposure at 1/66-sec. and turn up the gain a bit.  As you can see from the image, this came up with more color in the image but less detail.  Looking at this image and the September 9th image, it looks to me like there is probably a dust storm going on northeast of the Hellas Basin.  Both images show large light areas there where there should be dark splotches."


"The top picture was taken ... at the Lowell Observatory.  It is a combination of 800 raw images stacked and taken with a quality CCD imager by a noted amateur. The lower four separate images are a combination of about 50 raw images stacked but not digitally enhanced made in the middle of Shreveport in a back yard around 2:00am Sept. 14, 2003 by Terry Atwood/Steve Dupuy and their wives taken ... thru the Cave 12" f7 Newtonian reflector with a webcam using a 2X Barlow lens ahead of the webcam (efl f14). Steve and Ellen did the work on the images. ... There is several hundred thousand dollars difference in equipment.  Not bad!"


Here is an image Ron DiIulio and Terry Atwood took on September 19, 2003, using a 12" f7 Cave Astrola Newtonian telescope and a webcam with a 2X barlow lens from a backyard in Shreveport, Louisiana.

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Image taken by Stephen Bailey in West Monroe, Louisiana, with a Nikon CoolPix 880 digital camera.




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