Pelican Nebula in Cygnus
Image acquired from my driveway
in suburban West Knoxville
June 25, 2003
Astro-Physics 1200 GTO mount with Takahashi FSQ
106. SBIG ST 10XME CCD with CFW-8a
3nm Custom Scientific Hydrogen Alpha filter.
(Ha + R ) ((R+Ha)GB)
Hydrogen alpha= 4 hrs total exposure
(12 x 1200sec)
RGB
(16:12:10)
minutes
Red channel
blended 50/50
with
H-alpha channel.
View the pure Ha channel here ( 240 minutes total integration)
Notes: Guiding with integral guider chip.
Acquisition and calibration in Maxim DL/CCD with
Russ Croman's Sigma plugin used for bias,dark, and image frame combines.
Master Flats created from dawn flat field averages
Registar, Maxim and Photoshop utilized
for composite image.
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.