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Marco -
Sure, go ahead and upload the light streaked image to your site. I'd
be interested in seeing it.
Chris
-----Original Message-----
From:
Marco Lorenzi <lorenzi@libero.it>
To:
Discussion of Film Astrophotography <astro-photo@seds.org>
Date:
Wednesday, April 09, 2003 5:19 PM
Subject: Re: [APML] (Many) New
Shots from Southern Sky, Northern sky andageneralsite
re-design
Hi Chris, nice to hear from you after such a long
time! Thank you for your comments! Actually the RHO Ophiuchi image is not a
stack but a mosaic of four images set vertically by two (a couple for the top
half and a couple for the bottom half). The original of this image is about
9.5Kpixel x 6.2Kpixels! I applied the tecnique of Mike Cook in PW to smooth
the image. Anyway the s/n ratio I got on most of the shots taken in Namibia
was so hight that apart from some targets I never had to strech very much to
see all details emerge from the background. Consider that visual magnitute at
the zenith was about 7.2/7.4, and at that latitude RHO was at the zenith. I
was able to see the blue reflection nebula visually through my Pentax
SDHF75...
Another BIG problem of this shot was the fact
that one of the frames (the bottom right) suffered a lot from a light streak
entered in the camera (i don't know way) during the exposure and It took me
more than four hours to properly reconstructiong the image in PS. If you
are interested I will upload the part of the frame showing this problem
to see the before and after result... BTW also your shot of Saturn/Crab is
very nice!
Ciao
Marco
----- Original Message -----
Sent: Wednesday, April 09, 2003 8:54
PM
Subject: Re: [APML] (Many) New Shots
from Southern Sky, Northern sky and ageneralsite re-design
Hi Marco -
Your film shot of the Saturn/M1 conjunction is the best film image of
the event I've seen. Philip Perkins CCD image ranks up at the top in
the CCD world. Great job on it!
Good to see some more 400F being shot. It did a great job on your
southern sky images. Your Rho shot is wonderful! Did you
doing any smoothing on the image or was it the fact you had 4 trans of the
400F? I know when I stacked three 400F trans, the grain was almost
non-existent. Only if you really pushed the curves did the grain start
to become noticeable, but even then it was far less than Supra 400, PJ400
etc....
Chris
Dear friends, after a looong absence
eventually I am back in the list. Even
if I didn't participate during
last months to any discussion I did during
this time some new works
with my instrument. Tonight I uploaded a new
restyled version of my
page with a lot of new shots taken from Namibia (my
trip of last
summer) and some recent good job taken from my usual site in
Italy (in
particular a good shot of last January Crab/Saturn conjunction
visible
under "Solar System" section). Basically I kept only few shots of
the
former work. I am currently working on the many other shots I took
in
Namibia of the southern sky and I will reprocess most of the shots I
took
during last years (no longer visible in my site) but this task is
so time
consuming (and I don't have much time anymore to put on it)
that I think it
will take some months to be completed. In a near future
also I am confident
to be able to complete also the "Articles" "Author"
sections of the page.
My site is always at the same URL: http://www.astrosurf.com/lorenzi.
I
decided to keep the size of the pictures quite "generous", even if
it
meant having images up to 200KB in size. Since I am still working on
the
site every comment from you is particularly appreciated.
Here
are some of the new shots I uploaded under the different
galleries:
SOUTHERN SKY - TELESCOPE: all pictures are new, in
particular I am
particular happy with the mosaic of Eta Carinae, Rho
Ophiuchi, Lagoon nebula
and with the shots of the Tarantula nebula, B86
and Omega Centaury
SOUTHERN SKY - LARGE FIELD: In particular I like the
result I got of the
Southern Cross and the impressive fish-eye view of
the whole central Milky
Way
NORTHERN SKY - TELESCOPE: in the
Summer/Fall and Winter/Spring sections I
particularly like IC4592 in
Scorpius beside the other shots from the
Namibian pristine sky (M16,
M17)...
Clear sky to everybody
Marco
Lorenzi
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