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 LOG Adjustment of thresholds 32500/18000 Realignment

	Mars! 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 UNSHARP MASK 1.5 1 0 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 UNSHARP MASK 1.5 3 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

Comet IKEYA-ZHANG

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.

Thierry Remy Images

Mars!

Celestron NexStar-5 Images