New Processing Technique Gives New Life to Old Images
Reprocessed Orion Nebula by John Settle
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The nebulosity gets pixelated in the original scan of a 35 mm slide on the right. The exposure was made in January 2001 during a star party at Northway Field in Greenbelt, Md. through a friend's short tube 80 mm refractor. Quite a bit of sharpness was lost in the scanning process, despite using MagicScan v4.5 software's built in unsharp masking filter. Camera was Olympus OM-1 body, 2x shorty barlow and 400 asa Fuji Provia film. Exposure time was 40 Mississippi's. After seeing demonstrations of widefield masking techniques at the Blackwater Falls Astronomy Weekend, the photographer revisited the image, rescanned without filter and cropped to the "Orion's Sword" area. Then the bright stars and nebulosity were clonned out of the image, and Gaussian maskes was produced and subtracted from the original. This greatly increased contrast, removed vignetting and skyglow.
Globular Clusters
M13 From Ft. Washington, Md.
by Larry Laffoon
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| My name is Larry Laffoon and I live near
Washington, DC - in Fort Washington, Maryland about 10 miles south/east of
the city. Here is a picture I took of M 13 with the Stella EX video
camera on the night of September 7th, 2002. The telescope was a
10" Dobsonian, f 5.6, mirror by Jerry Wilkinson and fitted with a Tech
2000 Dob Driver II. This is a prime focus shot. I used Photo
Shop 2000 to adjust the contrast. By the way, the scope is named
after my wife, Holly. Regards, Larry |
Here is another shot of M 13 taken last night, September 11, around 10:30 in the evening from Fort Washington, MD - 10 miles from Washington, DC. 10" Dobsonian telescope, f 5.6. Prime focus shot, single frame from a Stella EX camera - I used MaxIm DL and Photo Shop 2000 to adjust contrast, etc. This is probably a better shot than the one to the left. Regards, Larry |
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Imager:
Steve Barkes
Date: 11 April 2002 Subject: M3 Globular Cluster Scope: Meade 10” LX200 Camera Vesta 675-SC Moog F6.3 Focal Reducer 324 x 240 Monochrome 10 Sec. Exposure in AstroVideo Dark frame substraction and Local Adaptive Sharpening in AIP4Win |
Imager:
John Settle
Date: 11 May 2002 Subject: M13 Globular Cluster Scope: 7" AstroPhysics APO Mount: Bisque GT-1100s Paramount Camera: OM-1 Body Film: Fuji Provia 400 ASA 45 Min Guided Exposure Unsharp Masking in Photoshop 6.0 some brightness and contrast adjustment Image made
at New Mexico Skies Guest Observatory near Mayhill, NM
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Imager:
Ed Abel
Date: 23 June 2002 Subject: M13 Globular Cluster Scope: Celestron C8 8" SCT Camera: Vests 675-SC 324x240 Monochrome Captured with Desire Sharpening and contrast in Photoshop 6.0 |
Imager: Ron Lee Date: 1 June 2002 Subject: M13 Globular Cluster Scope: Meade LX90 8" SCT Camera: STV CCD by SBIG Note that Ron's Images have received no post camera processing |
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| Imager:
Ron Lee Date: 23 June 2002 Subject: M13 with f5.95 focal reducer Scope: Celestron C8 8" SCT Camera: STV CCD by SBIG "Sharpest" on board processing used Note that Ron's Images have received no post camera processing |
Same
as to left except focal reduced to f3.75 Note that Ron's Images have received no post camera processing |
VESTA MOD (SC) Studies of M5
by Ed Abel Night
of 5 July 2002
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| Raw captured image showing the worse
of the nights variable "seeing" |
Better Raw captured image with some
contrast adjustment in Photoshop |
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| The Best Raw image of the evening with
contrast adjustment and deconvolution in Photoshop |
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M5 on the night of 5 July 2002 using VESTA (SC) modified camera.Focus still is a long |
