Cygnus
Image acquired from my driveway
in suburban West Knoxville.
November 20, 2003
Astro-Physics 1200 GTO mount with Nikon 180mm
f/2.8 ED lens @ f/4 with Mandel Wide Field Imaging Adapter.
CFW-8a and 4.5nm Custom Scientific Hydrogen
Alpha filter
SBIG 10XME CCD
120 minutes
( 1200 seconds x 6 )
Larger negative image available here.
Notes: Selfguiding with integral guider
chip.
Acquisition and calibration in Maxim DL/CCD with
Sequencer II used for auto image acquisition.
Sigma Reject combines with Russ Croman's Sigma
Reject plugin.
Adobe Photoshop used for levels and curves adjustment.
To view this image properly as well as other images on your monitor please adjust the contrast and brightness until each gradation in the greyscale is just discernable. Also set your display adapter to at least 24bit color and 1024 x 768 resolution minimum.