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Coathanger CR 399

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Posts Made By: Joe Giacalone

August 29, 2003 06:27 AM Forum: CCD Imaging and Processing/Solar System

mars 8/28/03

Posted By Joe Giacalone
About midnight 8/28/03 in Tucson
10" f/10 sct (Meade LX200)
Quickcam Pro 4000
Meade #140 2x barlow
600/1500 images stacked/processed
with Registax2 (nice piece of software!)
+ Photoshop

September 8, 2003 06:23 PM Forum: CCD Imaging and Processing/Solar System

mars 09/02

Posted By Joe Giacalone
Taken 9/2 at about 12:30 am in Tucson

10" lx200 working at about f/50
(using a microfiche projection lens to enlarge the image)
quickcam pro 4000
300/1500 images stacked in registax
processed in both registax and photoshop

September 10, 2003 08:38 PM Forum: CCD Imaging and Processing/Solar System

Mars 9/8

Posted By Joe Giacalone

December 23, 2003 08:07 PM Forum: CCD Imaging and Processing/Solar System

Saturn 12/21/03

Posted By Joe Giacalone
First saturn shot, taken from Tucson around midnight
local time.

10" LX200, 2x barlow
quickcam pro 4000, 1000/1500 stacked and processed
in registax 2 + photoshop 7

January 6, 2004 04:06 AM Forum: CCD Imaging and Processing/Solar System

clavius 1/2/04

Posted By Joe Giacalone

10" LX200 at prime focus (below average seeing did not
make higher magnification feasible)

quickcam pro 400, 50 images stacked in registax 2
+ photoshop 7.

May 14, 2004 02:07 AM Forum: CCD Imaging and Processing/Solar System

comet neat 5/12/04

Posted By Joe Giacalone
Shot from Tucson at 8:15 PM, 5/12/04
Canon 10D, 200 mm f/4, 1 minute exposure at ISO 400
levels/brightness adjusted in photoshop

high winds the past few days have created a
dust haze over our skies. It would be nice
if this were a morning comet!

January 6, 2003 04:29 PM Forum: Film Astrophotography - Imaging and Processing

Lunar landing photographs anyone?.

Posted By Joe Giacalone
Larry,

I would be skeptical of any such photographs. At best,
the resolution of a 3m-size object on the Moon is less
than 0.002 arcseconds -- far below the photographic
capability of a few decades ago (about 0.2 arcseconds
was the limit back then). Even today, it is doubtful
that equipment left behind on the Moon can be imaged
from Earth, or by Earth-orbiting telescopes.

Joe Giacalone

December 24, 2003 05:07 AM Forum: CCD Imaging and Processing/Solar System

Another Saturn.

Posted By Joe Giacalone
Luca,

I think that this is a great image! I dont think
there is much difference between the two.

I also chose the Cassini division as the alignment guide
in registax (I used the largest alignment box - 256 pixels).

Keep up the nice work.

Joe

December 24, 2003 05:41 PM Forum: CCD Imaging and Processing/Solar System

Another Saturn.

Posted By Joe Giacalone
Luca,

Thanks again for you comments. I would like
to find time to improve the image, but time
is not something I have a lot of!

Although this is my first webcam Saturn, I did
start the webcam leaning curve a few months ago
with Mars. Saturn seems to be much easier!

Merry Xmas!

Joe

PS: I am 4th-generation Italian (my great-grand parents
came over from Sicily in the early 1900s).

December 29, 2003 06:03 PM Forum: CCD Imaging and Processing/Solar System

Saturn on Boxing Day

Posted By Joe Giacalone
Alan,

Beautiful image! This raises an interesting question to
me: what is the true resolution of our telescopes? (by
resolution in this context I am referring to the width
of a dark line on a light background -- not to be confused
with the radius of the Airy disk which is relevant in
resolving binary stars) Has anyone so clearly resolved
the Enke division (as you have done) with an 8" scope?
I know that Theirry Legault has done so with his 12" SCT
and Wesley Higgins with his 14.5" starmaster (posted a
few days ago). In my image of a week ago (12/21/03),
the Enke division can be "seen" but I would not consider
it to be resolved.

Keep up the nice work!

Joe

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