NGC 6914
Characteristics:
RA (J2000): 20h 24m 32s
Dec (J2000): 42 degrees 23' 08"
Position Angle (Pinpoint): plus
77 degrees
Description:
NGC 6914 is a reflection nebula embedded within the diffuse emission
nebulosity of the Cygnus region. The region represents an immense
collection of young stars, most of which are hidden by surrounding
dust. The blue reflection nebula to the right is known as NGC
6914A (vdB 131), and the one on the left is NGC 6914B (vdB 32). I
found this to be a difficult region to image with an 8" scope- it is a
relatively faint area, and the detail within the reflection nebula is
difficult to resolve at this aperture and image scale (1.14 "/pixel),
especially given the typical seeing at my imaging site (around
3"). Here is what is achievable with a 20" aperture
scope, and here is what can be captured with a 24"
aperture scope, both obtained a dark sites with good seeing.
Rob Gendler provides a description of NGC 6914 here.
Photographic
Details:
Date: August 14 (Ha), August 15 (LRGB), 2009.
Scope: VC200L at
f6.4 on the Takahashi NJP Mount.
Autoguider: SBIG ST-402 with
60mm guidescope, focal length 227mm
Camera: Apogee U32
Filter: Astronomik
Ha (6 nm), type II RGB filters, clear filter for luminance.
Exposures:
Ha (8 x 20'); Lum (22 x 5'); R (6 x 8');
G (5 x 10'); B (7 x 15'). Total
exposure time 7.9 hours.
Conditions: Temperature 70 degrees F.
Post-processing: Calibrated, aligned, and
Sigma Clip combined
in Maxim, deconvolution in Maxim using Bob
Vanderbei's Fat Tail Deconvolution script (3 iterations), followed
by DDP
in ImagesPlus (IP). Further processing in Photoshop CS4 (16
bit format).
Please
note: Graphics on this website
may not be reproduced without author permission.
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