Thierry Remy Images 

 Updated: 06/17/04

NGC 1365"I send you one of my favorite picture NGC 1365" writes Thierry.

This NexStar 5 image was made with the trusty Vesta-Pro webcam  (B&W, 1/4'' chip) 

It is a composition of 166 pictures of 10-sec. 

Taken from Vicuña Chili.

M-3 Globular Cluster

This Vesta-Pro webcam shot was taken in front of the terrace of Thierry's house in Dorans, France. Total exposure was 16-min 40-sec based on 250 images of 4-sec each (best of 600 taken).

Celestron NexStar 5 was in alt-az mode + red MEADE 3.3 

Subtraction of Dark frame
RREGISTER of 263 images
BESTOF/SELECT on the center of image
ADD_NORM of 250 installations
DDP 25000 2 1
UNSHARP 1.5 1 0
Adjustment of thresholds 32500/18000


Celestron NexStar-5 Images

Thierry Remy traveled to a  mountain area of Chile, home to major astronomical observatories, to take these images at the time of the historic close-approach of Mars on August 27, 2003 9:51 UT. These are the same images done with slightly different processing: the one on the left having a "harder" look than the one on the right. I present both here because they give two views of Mars and demonstrate the differing end-results possible in digital processing.
This lovely and large Celestron NexStar-5 image of Mars was taken with a Philips ToUCam Pro webcam near Vicuna, Chile.

Technical Details 
Date/Time: Aug. 27, 2003 from 02h34-to-02h41 UT (ending just 6h10m prior to closest approach).
Red filter W25A
Photoshop software processing with several high pass filters
Exposure: 800 frames at 1/50-sec + single color frame

M-27 Dumbbell Nebula

B&W image made with 152 frames from Vesta-Pro webcam through Celestron NexStar 5" SCT. 
Picture taken in DORANS, France.

Technical Details 

Focal Reducer f/3.3
IRB filter 
IRIS image processing software 
Exposure: 14-min 35-sec total from 152-frames x 5-sec
DDP 1500 10 5 
Resized 80%

M57 Ring Nebula

B&W image made with 175 frames from Vesta-Pro webcam through Celestron NexStar 5" SCT. 
Picture taken in DORANS, France.

Technical Details 

Celestron f/6.3 focal reducer 
IRB filter 
IRIS image processing software 
Exposure: 14-min 35-sec total from 175-frames x 7.5-sec 
DDP 4000 2 1.5 
Colorized with M57 image below
Resized 200%

Detailed image of Saturn.

Taken through the NexStar 5 on January 21, 2003 with a Philips ToUCam Pro webcam attached to a 3x Barlow lens. This resulted in an AVI movie of 1054 images. The system was in alta-azimuth mode: the field rotation due to this setup was corrected by use of a program called ALTAZ.EXE -- by Yann DUCHEMIN.

Technical Details
 IRIS image processing software
Addition of 900 images 
Green layer: unsharp (>UNSHARP 1.5 15 1) 
Photoshop image processing software for LRGB (Luminance Layering) technique (L was the unsharped green layer) 
Reduced picture size by 75%.

M57 Ring Nebula

Images was taken with a Vesta-Pro SC webcam through the Celestron NexStar 5" with f/6.3 focal reducer. The NexStar was simply mounted in alta-azimuth mode.

500 images of 15-seconds exposure were initially made. The final image is the addition of 114 of these. Processing was done with IRIS software. The enlargement is resized 200% for details.

Technical details
Wavelet xy6 
Load x6 
Add y6 y5 (Y4 y4 y3)x3 
RL 10 1 
Sous  Paint Shop Pro 7 : Correction chromatique Black / Préserver saturation 2 fois Correction contraste Plus clair / faible / soutenu Accentuer



Same equipment as M-57 above. Addition of 73 images of 5-seconds and 33 images of 10-seconds. 

Processing is noted on the image.

Thierry sends us this image of M-13, taken with a Celestron C-5 on May 19, 2002. The imager was a Vesta-Pro SC webcam. The result is a combination of 38 images of 10-seconds exposure, with dark frame subtracted. 

Technical details 
IRIS software
Richardson Lucy 15, 1
Unsharp 1.5 1 0
resized 75% 
JPEG compression

This is the same shot of M-13 above, but with different processing. 

Additional Processing details
DDP 800 5 3 
RL 3 0

This photo of Jupiter is a combination of 50-images taken over a 3-minute period on January 5, 2002. The white oval is visible as it nears the Great Red Spot.

Images are the Copyright of Thierry Remy and used by permission.  Remaining contents Copyright © 2002-03 by