|
Imaging by
Larry Owens
(Click Images
for a Larger View) Back to AstroImager Focus
Page 1
2
This is a
presentation of the
most popular color hue and saturation for Mars, based on a survey of
planetary imagers conducted in January, 2008. It's certainly not
scientific, but it represents generally what most imagers see as
"normal" for Mars images, when presented on a computer monitor.
Basically, if you use these images as a rule of thumb, matching the
amount of color saturation and the hue in very general terms, most
people will see a natural looking Mars when your images are presented on
the web.
Mars Color Survey
Results
Here's a larger view of the survey top picks (below)
with channel breakouts for #32 and #25. I find it easier to match
colors based on a larger image. To use this chart as your
Mars color guide, I'd recommend saving the image and opening it in
PhotoShop. Internet browsers tend to change the color intensity.
Mars Color
Survey - Larger Sample for Color Matching
|
Mars 01/07/08:
Click Here -
More clouds over the Tharsis trio, but unfortunately poor seeing
took much of the detail from this image. The image was taken
the evening of 01/06-07.
Mars 01/04/08:
Click Here -
The first image of 2008 shows some interesting clouds that serve to
outline 4 volcanoes on the red planet, Arsia Mons, Ascraeus Mons,
Pavonis Mons, and of course Olympus Mons. The planet was 58
degrees above the horizon when this was taken with relatively good
stability. By 10:00 PM local, the stability worsened quite a
bit however, making this the best of several sets.
Mars 12/24/07:
Click Here -
This set was taken the evening of 12/23-24 with a Clear Sky Clock
estimate of stability as "poor", and the planet was bouncing around
quite a bit. Several other sets were taken, but this one
seemed to catch more detail out of the fuzziness.
Mars 12/18/07 (additional sets):
Mars 75% Size -
Mars Full Size -
This is a presentation of 3 sets of images (including the one below)
taken the evening of 17/18. Each set shows a lot of
interesting detail. The images were taken within 24 hours of the close pass for 2007.
Mars 12/18/07:
Click Here -
This is as close in time to the close approach I was able to get due
to weather. The stability was good for a change (from 6 to
7/10). The image shows continuing north polar region clouds
and lots of other interesting details.
Mars 12/15/07:
Click Here -
We're going hot-n-heavy with Mars now as the planet makes its close
approach on the evening of the 18/19th. This is an image taken
under lots of high thin clouds and poor stability (3/10). Not
much detail, but well, here it is.
Mars 12/12/07:
Click Here -
Here's an image from the evening or12/12-13. There are some
interesting cloud bands coming off the north polar region.
Solis Lacus is near the morning limb (right) and Sinus Meridiani and
Sinus Sabaeus are near the evening terminator. There appears
to be a bit of haze just north of Sinus Sabaeus, and perhaps some
south polar haze or clouds with some cloudiness southeast of Solis
Lacus near the limb. This image was actually processed during
a presentation at our last chapter meeting. Stability was not
very good, perhaps poor to average with average transparency.
Mars 12/10/07:
Click Here
- The stability was a bit better than the evening of 12/8-9 so this
image shows a bit more detail. I also didn't rush through the
processing as I sometimes do, so it has a slightly more natural
appearance than some of the others. There are lots of hazy
areas and lots of bright white clouds on Mars this time with a lot
of interesting detail. Angular size is 15.71".
Mars 12/09/07:
Click Here -
This image was taken under average to good seeing for a change.
The RED image shows the most detail and the RGB shows the rest of
the cloudy details. The planet is nearly at its maximum size
for the year now.
Mars 11/30/07:
Click Here
- Here's an RGB set from Nov 30th. Olympus Mons is
near the terminator, shown as a light feature that almost looks 3
dimensional. Not a terrific image due to a turbulent
atmosphere here on Earth, but the planet is getting large at 15"
now.
Mars 11/20/07 and 11/21/07:
Click Here
- This is a presentation of 4 sets taken over 2 days, color only.
The planet is now over 14"! Stability continues to be a
problem from Alpharetta though. We're having lots of clear
weather, but few really stable mornings.
Comet 17PHolmes 10/29/77 -
Size compared to Moon, and
View through TMB
Mars 10/14/09:
From Deerlick at the PSSG
Mars 10/09/07:
Click here - DMK/Skynyx Comparison
Mars 09/26/07:
See the image here. The
planet is almost 9.5" now and it will grow another 5.5" by December.
This image shows some interesting north polar clouds.
Stability was pretty good but I'm trying a smaller scale image for
presentation, I think it looks a bit better.
You may have noticed that some of the Mars images are missing.
I wasn't very satisfied with how the first few turned out this year,
so I'm doing a bit of re-processing and reorganizing. I'll
post them again soon.
Jupiter, 07/13/07: Click here. Very poor
seeing, Oval BA + dark spots
Jupiter, 07/08/07:
Click here for a single
color image
Jupiter, 07/08/07:
Click here for the full IRGB
breakout
Jupiter, 07/06/07:
Click here to see image
single color image
Jupiter, 07/06/07:
Click here to see image with
RGB Monochrome breakout
Mars, 07/01/07:
Click here for Mars from July
1, 6.33" across
Mars, 06/28/07: Click
here for Mars from June 28, 6.27" across
Mars,
06/27/07: Click here for Mars,
a little over 6 arc seconds across.
|
Jupiter,
06/08/07: Jupiter was only 30 degrees above the southeastern
horizon for the first set and not much higher for the second, but
there is some interesting detail. The second image shows a bit
of the SEB breakout, and the Great Red Spot is there with a lot of
equatorial activity.
|
Jupiter,
05/26/07: What I didn't accomplish in quality, I added in
quantity. Here's a presentation of 4 complete sets of IR, R, G
and B images with RGB. The stability was not particularly
good, but I had the opportunity to image so here's the result.
This series of images shows Oval BA (upper left). South is up,
Leading to the left. There are 2 sizes for these sets,
Large and
Small.
|
Jupiter,
05/06/07: We visited a friend in Miramar Beach, FL for the weekend
and I took the opportunity to image Jupiter while there.
Unfortunately the conditions were not ideal, but I did get a chance
to do some testing of a DMK21AF04 camera obtained recently.
|
Jupiter,
04/22/07: Here's a somewhat fuzzy Jupiter. The planet was
near the meridian and still only 33 degrees above the southern
horizon, and about 10 degrees above my neighbor's radiating roof!
None the less, there is some interesting detail. Jupiter is
certainly in a turbulent and very interesting period. Here's a
small format and a
large format version of the
image.
|
Saturn,
03/28/07: While waiting to webcast the Saturn/Moon close pass, I
decided to do some Saturn imaging. The stability was quite good and
that resulted in some nice detail. The image is presented in all
filtered colors, including RGB and R-RGB. The R-RGB enhances the polar
circle quite well. The image was taken just after 10:00PM 3/28.
|
Total
Lunar Eclipse 03/03/07: Here's the "Moon Rise" total lunar eclipse
of March 2007. Totality captured through the trees!
|
Saturn,
01/27/07: The Saturn opposition is near as evidenced by the small
ring shadow in the lower right. Stability was about average in visible
light, but quite good in IR. This is an IR-RGB image from 04:19UT.
|
Saturn,
12/26/06: Saturn is a beautiful sight in the pre-dawn hours now.
This image was captured at about 5:36 AM local time under some fairly steady
skies with some messy periods. The air was crisp and clear with a
temperature in the upper 30's here in Alpharetta, GA. It's not my best
image but it is pleasing to the eye.
|
Mercury
Transit, 11/08/06: After waiting under cloudy misty skies for
several hours (see some photos from
the event here) the skies parted for a couple of hours to present at
least part of the Mercury transit. The monochrome images were taken
with the Lumenera and the color image was taken using the Canon 300D.
All images were at F/11 on the C14. Here's the image in
full size (large file) and
here's a larger view of the
color image.
|
M31
10/20/06: I attended the Peach State Star Gaze this year, actually
just one night. The stability was terrible up at White Water on the
20th, but the transparency was rather nice for several hours. So I
decided to put the Canon Digital Rebel on the C14 with a 300mm telephoto for
a shot of M31. I took a total of 31 minutes of exposures in 5-7 minute
bites, and stacked them with MaximDL. It was cold (in the 30's F) so the
Canon seemed to work well even with 7 minute exposures.
|
Uranus
08/26/06: This is my first image of Uranus this apparition.
Unfortunately my scope started acting up (hand controller problems) and I
didn't get a chance to take a longer orientation exposure of the moons of
Uranus. The camera was aligned with the meridian though so north is up
(roughly).
|
Jupiter, 06/30/06:
With all of the excitement over oval BA and the GRS, we often forget that
the rest of the planet is still just as dynamic and interesting as ever.
The stability was rather good for a while the evening of 6/29-30 and the
image shows some interesting detail.
Single Color
IR-R-G-B Breakout (CM:
I-141.4 II-22.6 III-176.6) |
Jupiter, 06/27/06:
Junior is kicking up some dust. There is a large dark area developing
under the GRS, presumably due to the interaction of oval BA and the GRS.
The GRS also appears to be deformed slightly. Unfortunately the action is
near the limb and seeing was rather poor.
(CM:
I-187.5 II-83.9 III-237.4) |
Jupiter, 06/20/06:
Junior and her big sister are still dancing in this image under poor seeing.
Over the course of 10 days, the GRS and Oval BA are still approaching, but
slowly. Hopefully we'll get some steady skies soon for a better look
at the interaction between these 2 storms.
(CM:
I-161.9 II-111.7 III-263.3) |
Jupiter, 06/16/06:
This is an IR set with an RGB of oval Y and Z. Seeing wasn't very good
but the 2 NEB ovals are clearly visible approaching each other.
(CM:
I-236.3 II-216.8 III-7.3)
|
Jupiter, 06/10/06:
This is an IR image taken after oval BA and the GRS appeared.
Stability rapidly deteriorated after this image, so no further exposures
were taken. I'm including this image because it clearly shows the
proximity of oval BA to the GRS.
Single IR (CM:
I-57.0 II-82.9 III-231.8)
Larger Version
|
Jupiter, 06/10/06:
This was another relatively stable evening. The video during
acquisition again looked rather nice early in the evening, indicating a
promise of a nicely detailed recording of our great neighbor's cloud deck.
Although interesting, I was also a bit disappointed with the result, hoping
for more detail. This set was taken early in the evening, starting at
dusk.
IR-RGB Breakout
Single Color (CM:
I-13.2 II-39.4 III-188.3) |
Jupiter, 06/09/06:
The stability this Friday night was rather good. The clear sky clock
indicated "average" to "good" and that seemed accurate. From the raw
video, I had expected the images to be a bit nicer but "you never know what
you're gonna get" as Forrest Gump would say. These images were taken
rather late, from 03:45 - 04:00 UT (making it the morning of 6/10/06).
IR-RGB Breakout
Single Color (CM:
I-281.7 II-314.9 III-103.6) |
Jupiter, 06/06/06:
I imaged from about 10:00 PM to a little past midnight. The conditions
were a bit disappointing but the skies steadied out nicely for just a few
minutes before calling it an evening. This image doesn't show the GRS
or oval BA but there is a lot of detail to get lost in.
Single Color (CM:
I-159.4 II-215.6 III-3.5) |
Jupiter, 05/28/06:
Here's an interesting image. I apologize for the image quality, but
this IR image shows a white spot orbiting within the Great Red Spot.
There's also a bonus, with oval "BA" following and a bit south of the GRS
and a solar eclipse caused by Jupiter's moon Europa. Stability was a
bit of a problem, and the images could have used a bit more integration time
but the phenomena are represented nicely. |
Jupiter, 05/26/06:
Stability was actually pretty good the evening of 05/25-26. This image
shows some excellent detail in IR light, though the GREEN and BLUE filtered
images were quite soft. IR seems to be far less affected by the
atmosphere. Enjoy... Click
here for a single larger version of the image.
|
Jupiter, 04/11/06:
Stability was still a problem this night. Here's another IR-RGB
breakout from the morning of the 11th. The GRS was just rotating into
view. The RED and IR shots show some interesting detail and as usual,
have the highest resolution of the group. These
images were taken from 2:39-2:57 AM EDT with the C14 and Lumenera.
|
Jupiter, 04/10/06:
Here is a full IR-RGB spread of Jupiter from the evening of 4/9-10. As
you can see, Jupiter appears quite differently in IR or RED light. The
images were taken from 2:46-3:01AM with the C14 and Lumenera.
|
Jupiter, 04/06/06:
This image was taken under rather unsavory conditions, but thought I'd post
it anyway. It shows the GRS and friends, but Oval BA hadn't yet
rotated into view. The images were taken around 08:46UT with the C14 and Lumenera.
|
Jupiter
with Oval BA, 04/01/06: I'm a bit disappointed with this first
shot of Jupiter this apparition. Jupiter is going to be a challenge
for the next few years since it is so low to the south for imagers in the
states. None the less if we can get some steady air there is a chance
for spectacular images of this great planet. These 2 images captured
the Great Red Spot, and Oval BA (GRS Jr.), just below and to the left of the
GRS. |
The
Pleiades gets Mooned! 04/01/06: Through thin clouds, the Moon
gently passed in front of the beautiful Pleiades cluster. The clouds
caused a bit of a problem with glare, but the images recorded the event
nicely. These were taken with a Canon 300D mounted on a 5" achromat
piggy backed on the C14. |
Saturn
Print from
March 15, 2006: This Saturn image turned out to be rather popular,
so I created a version of the image that can be printed on 13"x19" photo
paper. I have one over the fireplace in our breakfast area and it's
actually rather captivating. As with the Mars print, a small monetary
donation to the chapter or help with projects will put one of theses on your
wall.
Just email
me. |
Mars
Opposition 2005 Print: Here is a reduced resolution Mars
opposition 2005 mosaic, similar to the one created for the 2003 Mars
opposition. The image is formatted for printing on 13"x19" photo paper
and is a summary of the events near the opposition in October. The
prints show exquisite detail and interesting dust storms. A small
monetary donation to the chapter or help with projects will put one of these
on your wall.
Just email
me. |
Saturn,
March 15, 2006: Here's a second image from the evening of the
15th. This one doesn't quite have the resolution of the first set but
pleasing to the eye none the less.
Click HERE for a single color view of the
planet. C14
at F/28 with the Lumenera @ 02:02UT (03/16/06) from Alpharetta.
|
Saturn,
March 15, 2006: Well, according to the clear sky clock the seeing
was "average", so I'm wondering what this Lumenera can do with "excellent"
seeing. Not a bad image and a bit better than the March 7th image.
Click HERE for a single color view of the
planet. C14
at F/28 with the Lumenera @ 01:42UT (03/16/06), from Alpharetta.
|
Saturn,
March 7, 2006: Finally a clear steady night when I'm not either
sick or out of town. The stability was rather nice for a change and
that's reflected in the images. If you look closely you can see the
planet through the "A" ring and Encke's gap (possibly just
the minima) is just visible. Click HERE for a single color view of the
planet. C14
at F/28 with the Lumenera @ 03:08UT (03/08/06), from Alpharetta.
|
Saturn,
January 31, 2006: Mars wasn't the only thing on the menu for the
31st. I hadn't been able to image the Saturn opposition, but this is
as close as I could get (4 days late). There is an interesting storm
on Saturn now that shows up as a distinct white spot in this image.
Click HERE for a single color view of the
planet. C14
at F/28 with the Lumenera @ 04:20UT (02/01/06), from Alpharetta.
|
Mars,
January 31, 2006: Mars is down to only 8.8" seconds now as Earth
continues to out run it. You can easily pick out Solis Lacus and the
massive Olympus Mons basin. C14
at F/28 with the Lumenera @ 02:39UT (02/01/06), from Alpharetta.
|
Mars,
December 27, 2005: Here's my last image for 2005. This one
was taken with the Lumenera Lu075M camera. The seeing conditions were
decidedly on the poor side but the new camera was able to pull out some
detail. I'm still experimenting with the camera, so there is a bit of
saturation in the image, but it's generally not bad for the conditions. C14
at F/58 @ 00:15UT, 12/28/05 from Alpharetta. |
Mars,
December 22, 2005: Mars is getting smaller by the hour. This
image was taken under rather bad seeing as is the case almost every night
now. If you look closely, you can just detect the tiny hint of a south
polar cap. C14
at F36 @ 01:28UT from Alpharetta. |
Mars,
December 6, 2005: Through high thin clouds and relatively good
seeing, here's my first image this December. Mars is down to 15.88"
now. C14
at F36 @ 02:44UT from Alpharetta. |
Mars,
November 26, 2005: Finally a conjunction of clear skies and free
time. Mars is getting smaller now, 18.5". Also the morning
terminator has started its slow march across the planet and there appears to
be an increase in polar hood clouds. C14
at F36 @ 02:53UT from Alpharetta. |
Mars,
November 7, 2005: Opposition 2005! This set was taken
several hours after opposition, but there is no terminator to be found.
The bright spot near the left limb is Olympus Mons, towering above the
surrounding landscape near Martian sunset. C14
at F36 @ 03:48UT from Alpharetta. |
Mars,
October 30, 2005: This set of images was processed in mid
November. The detail and contrast are rather nice. The RED image
seems to have caught the steadiest air. C14
at F36 @ 04:18UT (10/31/05 UT) from Alpharetta. |
Mars,
October 29, 2005: These images were taken just after the close
approach of Mars this apparition. The color of the planet seems to have
shifted to a monochromatic "yellow" (except for the north polar hood) and
visually the contrast is somewhat subdued over previous weeks. This
may be due to an atmosphere heavily laden with dust. C14
at F36 @ 03:47UT (10/30/05 UT) from Alpharetta. |
Mars,
October 27, 2005: More dust. There is an interesting dust
"ring" to the South and more dust streaming northward. The north
polar hood remains interesting with ever changing patterns of blue mist and
clouds. C14
at F36 @ 07:39UT from Alpharetta. Here's the IR-R-G-B breakout.
|
Mars,
October 19, 2005: Dust storm inside Valles Marineris!
You can actually see the outline of the floor of Valles Marineris in bright
yellow dust. The first series of images were done with a NexImager and
it seems to have done a better job than the ToUcam Pro. C14
at F36 @ 06:50 to 07:30UT from Alpharetta. |
Mars,
October 14, 2005: After nearly a month of cloudy or very unsteady
skies, finally a break. This image of Mars actually shows surface
relief. Take a look at the bright edges of the cliffs of Valles
Marineris and the surface relief around Olympus Mons! C14
at F36 @ 08:57UT from Alpharetta. |
Mars,
September 23, 2005: Through Rita's skirt. I hadn't planned
to process this image because of the poor stability, but found some time.
The image was taken through the edge of hurricane Rita, with rows of high
thin clouds and fast moving low altitude clouds. It's an interesting
image, but with a bit less resolution. C14
at F36 @ 07:23UT from Alpharetta. |
Mars,
September 21, 2005: Variable stability but this time I was able to
take a full set of exposures. C14
at F36 @ 07:45UT from Alpharetta.
|
Mars,
September 20, 2005: Stability started out fair, but just after
taking an IR exposure the wind kicked up and the seeing turned Mars into a
fuzzy ball. C14
at F36 @ 08:30UT from Alpharetta.
|
Mars,
September 18, 2005: Seeing was fairly good, but most of the
morning was spent experimenting with frame rates and fine tuning polar
alignment, so I was only able to capture a single color image. C14
at F36 @ 09:10UT from Alpharetta. |
Mars,
September 13, 2005: It's a cloudy day up north. Check out
the cloud bank at the north polar hood. C14
at F36 @ 09:16UT from Alpharetta.
|
Mars,
September 9, 2005: Solis Lacus is around again in this image.
See if you can find Olympus Mons. C14
at F36 @ 09:16UT from Alpharetta.
|
Mars,
September 3, 2005: The "lumps" are still with us.
The northern most lump is Olympus Mons. C14
at F36 @ 09:16UT from Alpharetta.
|
Mars,
September 2, 2005: Some nice "lumps" near the evening terminator. The image was taken with the C14
at F36 @ 09:16UT from Alpharetta.
|
Mars,
September 1, 2005: Some nice detail, but stability was terrible
this morning. The image was taken with the C14
at F36 @ 09:05UT from Alpharetta.
|
Mars,
August 28, 2005: Fun with filters. I now have a Sony based
ICX098BL monochrome CCD. Its broadband spectral response will enable
the use of a variety of filters. I reprocessed the color image and
used the RED mono image as a luminance layer to enhance the detail. The image was taken with the C14
at F36.
|
Mars,
August 26, 2005: The skies were not friendly this morning.
High thin clouds and poor stability were the rule. This is a stack of
3200 frames - TouCam/C14/F36.
|
Mars,
August 20, 2005: This image shows an interesting lighter colored
polar zone surrounding the south polar cap that I have not seen in previous
images. It shows up in the 8/19 image but not quite as clearly. This is a stack of
3000 frames - TouCam/C14/F36.
|
Mars,
August 19, 2005: Some interesting Hellas detail in this image. This is a stack of
3150 frames - TouCam/C14/F36.
|
Mars,
August 16, 2005: The stability was somewhat better than normal,
still not great. This is a stack of
3134 frames - TouCam/C14/F36.
|
Mars,
August 15, 2005: Relatively good stability and transparency this
morning, but it only lasted for a few minutes. This is a stack of
3200 frames - TouCam/C14/F36.
|
Mars,
August 13, 2005: Not a great image, due to - you guessed it,
stability. This is a stack of
3100 frames - TouCam/C14/F36.
|
Mars,
August 12, 2005: The stability was a bit better, but only for a
short while. It got worse as dawn approached, but I'm fairly pleased
with this image. Note the clouds streaming from the polar cap and the
prominent north polar hood. This is a stack of
3200 frames - TouCam/C14/F36.
|
Mars,
August 11, 2005: This is the last image taken before dawn.
The other AVI's taken that morning were useless because of atmospheric
turbulence. If I could just get some steady skies, I could take some
remarkable images with this scope. This is a stack of
3200 frames - TouCam/C14/F36.
|
Mars,
August 4, 2005: This is the last image taken before dawn.
It is a bit better than the first 8/4 image and shows much clearer south
polar cap detail. Note the lighter area just below the polar cap.
This is thought by Dr. Schmude of ALPO to be a brief dust storm. This is a stack of
3000 frames - TouCam/C14/F36.
Links to some large size for printing:
Saturn 031606
Saturn 032807
Mars 103005
Moon Saturn 032807
|
|
Page 1
2 |