LBN 629 - Northern Galactic IFN
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MOUSE-OVER IMAGE FOR STARLESS VIEW CLICK
ON IMAGE FOR FULL SIZE VIEW (7196x4860)
Scope:
FSQ-106N at f/5; Location: DAA Observatory, Shelter
Valley, CA; Dates: 22, 23, 24 February, 23, 24 March 2025; Camera: ASI2600MM (Astronomik
type 2c L RGB filters) Exposure:
Exposure: Lum - 202 x 3.5 min (gain-101 1x1) and 92 x 5 min (gain-160
1x1), RGB - 54 x 2 min (gain-101 1x1) each RGB exposures.
Processing: Data
Collection - N.I.N.A. Sequencer (as FITs). Sub-frame calibration -
Pixinsight (WBPP). Sub-frame registration and integration (Average combine
- Linear clipping) - PixInsight (WBPP). 2x Drizzle of Lum stack - PixInsight
(WBPP). Noise reduction - NoiseXTerminator - PixInsight.
Non-linear stretching, normalization and gradient removal - PixInsight.
Photometric RGB calibration (SPCC) - PixInsight. Deconvolution of Lum, Emission
Line, and
RGB combine -
BlurXTerminator. Generation of starless nebulosity Lum and combined RGB images for later processing - Star
XTerminator. Curves, Levels, RGB
combine - PixInsight. RGB starless and Lum starless combine (for
LRGB starless) - PixInsight. LRGB
stars screened to LRGB starless - Pixinsight. Final finishing, crop,
and resample -
Affinity Photo. Annotation - PixInsight, Aladin (Simbad),
and Affinity Photo. This image is an LRGB starless composition -
with LRGB stars added. Image processed at 12496x8352 resolution. Final Image size is approximately
7196x4860.
North is down and slightly to the left in this image (10
degree rotation - equatorial coordinates). This image shows
the high galactic latitude Cirrus (IFN) of the LBN 629 region. This places these
clouds well above the plane of the Milky Way disk. These clouds are not particularly
illuminated by single stars, but instead illuminated by the bulk of the Milky
Way stars close to the galactic disk. LBN 629's galactic coordinates
are roughly 126 longitude, 32 degrees latitude. This places it a
little further away from the galactic center than that of the sun and on
the galaxy's north pole side. There
are also cold clouds (called cold clumps and identified in the Planck
Galactic Cold Clump Catalog) in this image. These cold clouds are noted
for their low temperatures - lower than their surrounding space. They
are not seen in optical wavelengths - they are observed and measured in
radio wavelengths. However, they are
sometimes coincident with optical wavelength structures. They are of
interest since they can be precursors in the evolution of star forming
regions.
These objects and
some of the brighter stars are identified in the annotated
image. Horizontal Full FOV is approximately
2.47 degrees. Full size image scale is about 1.24 arcsec/pix.
Image
center is approximately - Equatorial 2000: RA: 11h 15m 45s Dec: +83°46'08" |
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