Nightscapes & Deep Sky
Brian A. Morganti
LDN 673 -
Dark Cloud Nebula
Lynd's’ Dark Nebula 673 (or LDN 673) is a very dense
and highly fractured dark cloud complex in the Aquila Rift (near to
its center). It is located some 400 – 500 light-years from Earth.
Situated against the Milky Way’s faint starlight, LDN 673 contains
raw material to form a huge number of new stars. The dust in
these molecular clouds scatters the blue light from these stars,
giving the surrounding stars a yellow-red color bias.
LDN 673 has an apparent size of 1.5 x 1 degrees,
which corresponds to a real size of 15 x 10 light-years in space.
North is to the right in this image.
Date & Location: August 8, 2015
- StarEffects Observatory, Bernville. PA
Weather: Calm winds, average temp
Sky Conditions: Clear with Average Transparency.
SQM-L: Start to Finish 20:41 -
Optics: TeleVue NP101is 540mm
w/Field Flattener @ f5.4
Filter: Astronomic EOS
clip-in CLS (Light
Guiding: TeleVue TV60is - Orion
Star Shoot AG - 5 second exp - very good graph
Camera: Canon 6D AstroHutech
Modified- Full Frame DSLR
Exposure: 50 x 4min ISO1600
(total 3 hours 20 min)
Calibration Frames: Darks, Bias 60F
- 10 Flats/Dark Flats Used acquired w/Alnitak Flat Man
Plus 5.75a, PS CS6, GradientXTerminator, NIK filter tools
Comments: Dark Nebula are one of my
favorite targets and this first time using my Canon 6DH on this
type of target. As always, more images and a darker sky
would result in more detail, but overall rather pleased with the
Nightscapes & Deep Sky Colors