From
Eric
NG
® . .
. . . .Date:
Subject: 20030624 Mars
Dear friends,
This morning some cloud gaps allowed me to capture Mars
again. Very windy (>25kmph) and my Mars was almost all the time moving on
the ToUcam Pro screen. And finally got 2 out of 12 avis were useable.
http://www.ort.cuhk.edu.hk/ericng/Mars_200306242054_eric.jpg
The orographic cloud on Tharsis at
PM limb is vivid and also the very diffused clouds over the
Wish you all like it.
Regards,
® . .
. . . .Date:
Subject: 20030629 Mars
Dear friends,
A few isolated rain showers in this morning and the sky was
clear for 10mins. As this time I used the new monitor, I still has not adapted it's brightness and the colour difference with my previous
one that leading to a bit overexposed. Attached was the Mars shot taken on
20030629 20:22UT (this morning).
http://www.ort.cuhk.edu.hk/ericng/mars_200306292022_eric.jpg
The following few days will be fine weather according to the
forecast, I hope to
keep in touch with the red planet.
Regards,
® . .
. . . .Date:
Subject: Re: Request for your
observations on 30 June
Dear Masatsugu,
I am glad that my image is useful to your analysis on SPC
dark spot. As this shot was taken within the cloud gap so the image is
over-exposed a bit especially for the SPC part. In fact, that dark spot I
thought that might be the artifact due to processing. I promise once the sky is
clear, I shall shoot Mars according to the CM and the time you provided to me.
As you may also know that I take image atop of the old
building, where I am suffering quite severe current generated by the air-conditioners
... BTW, I am glad to tell you that I will be moving to my rural observing site
with my newly purchased 12.5" F6 Newtonian at least for 4 months maily for Mars observation. I expect I will produce some
great images and hopefully you will be pleased with my image submission later
on.
You may go to my website and you will see my observing site
and the scene surrounding my roof.
http://www.ort.cuhk.edu.hk/ericng/webcam/equip.htm
Warm Regards,
® . .
. . . .Date:
Subject: 20030630 Mars
Dear friends,
Attached was the Mars image taken in this morning. This time
I used the correct exposure and gain setting and you may see the detail on the
SPC. The Solis Lacus is acrossing CM. Very tried and
has to sleep, good that today is public holiday in HK ...
http://www.ort.cuhk.edu.hk/ericng/mars_200306301908_eric.jpg
Regards,
® . .
. . . .Date:
Subject: Re: 20030630 Mars (time amendment)
Dear friends,
Sorry that the time for the previous sent image should be
19:25UT instead of 19:08UT. Too sleepy while processing the
image. Here is the correct time version.
http://www.ort.cuhk.edu.hk/ericng/mars_200306301925_eric.jpg
Regards,
® . .
. . . .Date:
Subject: 20030701 Mars
Dear friends,
The attached image was taken in this morning. Same CM as the
yesterday posted image. Seeing and transparency was better but gradually
degraded. You can see Solis Lacus near the CM and also the limb haze. A thick
piece of clouds rolled in half an hour later after this shot that leading me to
stop imaging.
http://www.ort.cuhk.edu.hk/ericng/mars_200307012000_eric.jpg
There are some bright spot features on the SPC, may anyone
kindly comment what are they?
Regards,
® . .
. . . .Date:
From: "Eric Ng"
<ericng@cuhk.edu.hk>
To: <vzv03210@nifty.com>
Subject: Re: RE:Re: 20030630 Mars (time amendment)
Dear Masatsugu,
I was not be able to capture another good shot at 80 degrees
many thick clouds moving across the sky on 30 June morning. I just sent you the
one I took this morning and teh resolution of this
image is much better.
I need to sleep for 2 hours and have to go work afterwards.
Cheers,
® . .
. . . .Date:
From: "Eric Ng"
<ericng@cuhk.edu.hk>
To: <hkas@yahoogroups.com>,
<apw-group@yahoogroups.com>,
"domegroup"
<domilunari@yahoogroups.com>,
"Masatsugu MINAMI" <vzv03210@nifty.ne.jp>,
<rmckim5374@aol.com>
Subject: Re: [hkas]
Mars taken on 1 july 03 (UT)
Hi KC,
Congratulations to your
wonderful Mars taken with the 8.5" Newtonian Cassegrain. I
also experienced good seeing at around
I am looking forward to your another
master piece obtained by your coming 10" Newtonian.
Regards,
Eric Ng
P.S. Yes, you may go to select the Cyan of the colour
channel and reduce the saturation, the colour of the
SPC can be changed back to normal white.
® . .
. . . .Date: Thu,
From: "Eric Ng"
<ericng@cuhk.edu.hk>
To: "Maurice Valimberti"
<mauricev@ozemail.com.au>,
"David M Moore" <davidpaulamoore@msn.com>,
"Masatsugu MINAMI" <VZV03210@nifty.ne.jp>
Subject: Re: Mars 2nd
Dear Maurice,
Don’t worry. I was able to capture the patch over Nilokeras
as yours too. I am processing now. I will post the result to you as soon as
possible.
Regards,
® . .
. . . .Date: Thu,
Subject: 20030702 Mars (F70 & light
patch over Nikoleras)
Dear friends,
The sky continued clear, the seeing was not good in average
but still fortunately still could captured some steady moment. Attached mars was taken in this morning with the 10" F6
Newtonian as usual but this time I used F70 for the image.
http://www.ort.cuhk.edu.hk/ericng/mars_200307021953_eric.jpg
The light patch over Nikoleras
(see the one by MauriceValimberti) has been captured
on this shot too. I put the RGB and RRGB side by side for your reference. BTW,
this time I applied weaker processing which is quite natural looking.
Please feel free to comment.
Regards,
® . .
. . . .Date: Thu,
Subject: another 20030702 mars
Dear friends,
I am attaching another 20030702 mars which was taken
approximately 40 mins earlier than the shot
previously posted. This one was taken at F42.
http://www.ort.cuhk.edu.hk/ericng/mars_200307021916_eric.jpg
Regards,
® . .
. . . .Date:
Subject: 20030703 Mars (Great seeing)
Dear friends,
Here were two mars images taken in this morning. God blessed
that the dust patch seems diffused already. These two are so far my most
detailed shots. Seeing and transparency were good, no wind.
Please feel free to comment
® . .
. . . .Date:
Subject: Re: 20030703 Mars (Great
seeing)
Hi Richard,
Yes. I will certainly keep track with the dust storm as
earliest as next week. Hopefully the sky can co-operate.
Regards,
® . .
. . . .Date:
Subject: 20030704 Mars (sky keep clear,
I am almost be dried out)
Dear friends,
Attcahed was
the Mars taken in this morning, seeing and transparency were
good. I preliminary processed the shot taken at 20:56UT. The spot on the SPC is
very distinctly shown in the picture. I put the RGB and the LRGB (L=R) for your
reference. Too bad that I need to work earlier today, the sky seems will keep
clear a several days more, I hope I won’t be dried out or load down.
http://www.ort.cuhk.edu.hk/ericng/mars_200307042056_eric.jpg
Cheers,
® . .
. . . .Date:
Subject: Re: Mars on 5 july morning
Dear KC,
Great work!!! Yes. I am also exhausted and I woke up a bit
late in this morning so missed the spreading of dust storm. The monitoring of
the dust storm will turn to be responsible by
Kind Regards,
® . .
. . . .Date:
Subject: 20030705 Mars in this morning
Dear friends,
I woke up a bit late this morning so missed the chance to
capture the spreading dust over Noachis as shown on KC Pau's
image taken at 17:30UT.
The attached image was taken at 20:21UT and there is a light
patch in between Meridiani Sinus and Oxia Palus, especially bright in R and G.
http://www.ort.cuhk.edu.hk/ericng/mars_200307050721_eric.jpg
Please feel free to comment.
P.S. Need to work OT on Sunday ... So poor
...
® . .
. . . .Date:
Subject: 20030706 Mars (dust image)
Dear friends,
I woke up in time to capture the dust spread from
http://www.ort.cuhk.edu.hk/ericng/mars_200307061908_eric.jpg
Regards,
® . .
. . . .Date:
Subject: Re: mars image
Hi Damian and Weileong,
I am sure he did not steal the HST images!!! I bet he blur
and zoon out moasic shots by MGS.
Cheers,
® . .
. . . .Date:
Subject: 20030708 Mars (First image
with 12.5" Newt)
Dear friends,
I am attaching my first mars shot taken with the newly
installed 12.5" F6 Newtonian (actually I took some test shots on 0707).
Seeing was fair (3-4/10) but the scope gave me very high contrast so the
details are quite well presented.
The dust storm over the Noachis seems less prominent. It is
great that it won’t spread globally. May someone kindly comment on it.
http://www.ort.cuhk.edu.hk/ericng/mars_200307081833_eric.jpg
Regards,
® . .
. . . .Date:
Subject: 20030707 mars (test shot taken
with badly collimated scope)
Dear all,
The attached image surely tells us seeing is not the only
reason leading to bad result! This mars was taken on 20030707 after I installed
the secondary mirror and mirror in rush in dark without correct squaring of the
focuser. Well ... I would say the telescope was really the typical example of
misaligned for both secondary and primary too.
http://www.ort.cuhk.edu.hk/ericng/mars_200307071925_eric.jpg
The seeing was similar as the one I took on 20030708 and you
can see the difference between good and bad collimation result. So .. check collimation rather than
shoot image in rush!
Clear skies,
Eric NG (
