Nightscapes & Deep Sky
Brian A. Morganti
LDN 1251 -
Dark Nebula Complex
LDN 1251 (Lynds Dark Nebula) is a large dark/dusty
nebula that is in the process of forming new stars. It is
located about 1000 light years away in the constellation of Cepheus.
LDN 1251 is the larger
elongated structure on the left and contains about 15 Young Stellar
Objects. These are stars in the early stages of evolution. They
are often associated with early star phenomena such as jets and bipolar
overflows, masers, Herbig-Haro objects, and protoplanetary disks.
LDN 1247 is the smaller dark nebula just to the right of center.
In addition to the dark nebula, this image also shows
a handful of PGC galaxies that shine far in the background behind LDN
Date & Location: Sep 24/25, Sep
27/28, Oct 5/6 2017
-StarEffects Observatory - Bernville, PA
Weather: 50F average all three nights with light winds.
Sky Conditions: Clear with above average
transparency all three nights.
Optics: TeleVue NP101is Refractor
w/field flattener = 540mm @ f5.4
Filter: Astronomic EOS
clip-in CLS-CCD (Light
Guiding: TV60is w/Orion SSAG @ 5 second
exposures - Excellent Graph
Camera: Canon 6DH Hutech Modified - Baader UV/IR
Exposure: 33 x 5 min / 28 x 5 min / 14
x 4min / 17 x 5 min ISO
1600 (7 hours 26 min total)
Calibration Frames: 16 Darks & 9
Bias frames + 10 flat field images acquired with Alnitak Flat
Processing: Images Plus 5.75a,
Photoshop CS6, NIK tools, Carboni Actions Tools
Comments: A very dim DSO that would
be much better photographed from a truly dark sky location, yet
overall pleased with the dusty details I was able to bring out with
aggressive processing .
Nightscapes & Deep Sky Colors