SaratogaSkies Jim Solomon's Astropics

Search

Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

Links:

M81 & M82 (Galaxies)

Mouse-over to see annotations. (Requires Javascript) Click to see high-res version.

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: Celestron/Baader Multi Purpose Coma Corrector (MPCC)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 47 x 4min @ ISO 400
Total Exposure: 3hrs, 8min
Date: 4/5/2005 9:05:31 PM PDT (start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: Manual
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, flat field, registration, gradient removal
  • JimP: Kappa-Sigma Stacking, White balance, ASINH stretching
  • Photoshop: Levels, cropping, JPG conversion
  • Neat Image: Noise attenuation on M82 closeup

Image Description:

This is M81 and M82, a famous pair of galaxies in Ursa Major. M81 is also known as Bode's Nebula. See also the full-resolution image. North is left.

 
NGC 6946 (Spiral Galaxy)
SaratogaSkies Jim Solomon's Astropics

Search

Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

Links:

NGC 6946 (Spiral Galaxy)

Mouse-over to see annotations. (Requires Javascript) Click to see high-res version.

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: Celestron/Baader Multi Purpose Coma Corrector (MPCC)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 30 x 4min @ ISO 800
Total Exposure: 2hrs, 0min
Date: 9/16/2004, ~11:10pm PDT (start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: Manual
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, flat field, registration, normalized Kappa-Sigma stacking, background fit, cropping
  • Photoshop: Levels, image size, JPG conversion

Image Description:

In the lower left is NGC 6946, a spiral galaxy that straddles the border between the constellations of Cygnus and Cepheus. In the upper right is NGC 6939, an open cluster in Cepheus. This is two full hours of total exposure time and is one of my best images to date. This is the full frame, scaled for display on the web. A full-resolution image is also available. North is up.

NEWSFLASH!! Supernova 2004et occurred less than 6 days after this image was taken! Mouse-over the image below to see the supernova discovery image. Note how there's absolutely no sign of that star in my image, yet six days later it's as bright as some stars in our own galaxy!

 
SaratogaSkies Jim Solomon's Astropics

Search

Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

Links:

Image Not Found

Image Details:

Processing:

Image Description:

 
SaratogaSkies Jim Solomon's Astropics

Search

Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

Links:

Image Not Found

Image Details:

Processing:

Image Description:

 
Moonrise over Los Gatos
SaratogaSkies Jim Solomon's Astropics

Search

Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

Links:

Moonrise over Los Gatos

Click to see high-res version.

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: None
Scope: Canon EF 200mm f/2.8L II USM lens
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 200mm
Effective Focal Ratio: f/2.8
Exposure: 1/60 sec @ ISO 100
Date: 8/8/2006 8:18:06 PM PDT
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: Auto
Dithering: None
Guiding: None

Processing:

  • Photoshop: RAW Conversion, Image Scale, JPG conversion

Image Description:

This is an unprocessed shot of a 99.75% full moon rising over the Los Gatos mountains. The two bright dots in the upper-right are airplanes. A higher-resolution image is also available. Up is up. <smile>