The Southern Crown (Corona Australis)

Data	Comments
Target: The Southern Crown (Corona Australis) Date: Sunday, August 20th, 2006 Time: First image: 12:00:13 AM Time: Last image: 1:05:03 AM Location: Kulnura, NSW, Australia Camera: Canon EOS-20Da Lens: Canon EF 200mm F/2.8L Focal length: 200mm Mount: Piggy-backed onto an 8" Meade LX90 LNT (F/10) Alignment: Equatorial; via equatorial wedge Exposure: 30 x 60 seconds @ ISO-1600 (RAW) Software: IRIS: Calibration, registration, stacking; Adobe Photoshop CS2: post-processing and framing	This composite consists of one set of images; one set of 30 images taken at ISO-1600. Each individual image was a 60 second exposure. IRIS was used to calibrate each image (dark subtraction [median combined master dark] and flat field division [median combined master flat {lights and darks}]), to register, align, and finally stack. Photoshop CS2 was used to adjust levels, curves, frame and resize the final composite.

Data

Comments

Target: The Southern Crown (Corona Australis)
Date: Sunday, August 20th, 2006
Time: First image: 12:00:13 AM
Time: Last image: 1:05:03 AM
Location: Kulnura, NSW, Australia
Camera: Canon EOS-20Da
Lens: Canon EF 200mm F/2.8L
Focal length: 200mm
Mount: Piggy-backed onto an 8" Meade LX90 LNT (F/10)
Alignment: Equatorial; via equatorial wedge
Exposure: 30 x 60 seconds @ ISO-1600 (RAW)
Software: IRIS: Calibration, registration, stacking; Adobe Photoshop CS2: post-processing and framing

This composite consists of one set of images; one set of 30 images taken at ISO-1600.
Each individual image was a 60 second exposure.
IRIS was used to calibrate each image (dark subtraction [median combined master dark] and flat field division [median combined master flat {lights and darks}]), to register, align, and finally stack.
Photoshop CS2 was used to adjust levels, curves, frame and resize the final composite.