Pickering's Triangle
Characteristics:
Magnitude: Unknown.
Size: Roughly about 60 arcminutes.
Distance: 2,600 light years
RA:
20h 51m 10s
Dec: 32 degrees 9' 53"
Description:
Pickering's Triangle is part of the Veil Nebula complex, located
between the Western
Veil and the Eastern Veil.
Please click
here for a wonderful wide field view of this region taken by Rob
Gendler.
Photographic Details:
Ha:(HaR:G:B)-
exposure time for Ha was 60' unbinned. Exposure times for R, G, B
were 20' each (inbinned). HaR used for the R channel was a mix of
50:50 Ha and R, with R used in lighten mode in Photoshop.
Date: August 9, 2004.
Scope: Takahashi
Sky 90 at f4.5 with field flattener/focal reducer, on the G11 Losmandy
Mount.
Autoguider: SBIG STV with
e-finder.
Camera: SXV-H9
Filter: Astronomik
13nm bandpass Ha filter and RGB type II filter set.
Exposures: 12 x 5' subexposures
for Ha. 5 x 4' subexposures for R, G, and B each. Total
exposure 120 minutes.
Conditions: Temperature 65 degrees F; average
transparency; below average seeing; calm; a few high, thin clouds.
Post-processing: No darks, flats, or bias frames used.
Gradients in the color channels corrected in ImagesPlus. Images
were aligned in ImagesPlus, combined using RC Sigma combine plug-in
(MaximDL/CCD), and assembled in Photoshop. The technique of "Luminance
Corrected LRGB" was used to preserve luminance detail and color
saturation.
Please
note: Graphics on this website
may not be reproduced without author permission.
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