NGC 7013 in Cygnus
|
CLICK ON IMAGE FOR FULL SIZE VIEW (2800x2100) Scope: Celestron 9.25 Edge HD 235 mm at f/7, Location: Tierra Del Sol - SDAA Club Site, CA, 28 August 2019, Camera: ST8300M (Baader LRGB filters) Exposure:
Exposure: 16 x 13min (1x1 bin) exposure with UV/IR block filter, 8 x
4.5 min (2x2 bin) each RGB
exposures.
Processing: Data
Collection - Sequence Generator Pro (as FITs). Subframe calibration
- Pixinsight. Subframe integration (Median combine - Winsorized Sigma
Clipping) - PixInsight. Non-linear stretching, normalization and
gradient removal - PixInsight. Generation of starless Luminance nebulosity images
for later processing - starnet++. Curves, Levels, RGB combine, Luminance
layering - PixInsight. Luminance Stars and Starless combine - PixInsight. Final finishing - Photoshop. RGB calibration
- eXcalibrator. Annotation - PixInsight, Aladin (Simbad and NED), and PhotoShop. This image is a RGB combine with
Luminance layering. The Luminance master was processed with starnet++ for
both nebulosity (surface brightness) and stars only image. Images processed at 3352 x 2532 resolution. Final
Image size is approximately 2800x2100. North is up in this image. This
image shows a region of interstellar material and dust illuminated by nearby
stars as well as the galaxy, NGC 7013, peeking out from underneath the cloud.
The nebulosity in this image has catalog entries in PGCC (Planck Catalogue of
Galactic Cold Clumps) as Molecular Clouds. The PGCC objects with areas listed
are PGCC G075.46-11.06 and PGCC G075.24-10.99. The galaxy, NGC 703 is a
ring galaxy classified as SA0/a(r). It is about 41.1 million light years by
Tully Fisher estimate and 49.9 million light years by redshift estimate. These objects
and some of the brighter stars are identified in the annotated
image. Horizontal FOV is approximately 38 arc minutes. Full size
image scale is 0.81 arcsec/pix. Image center is approximately - Equatorial 2000: RA: 21h 03m 37s Dec: +30°02'27"
|
All images and content remain the property of Jim Thommes - copyright 2003 - 2020Current Web Total Hits - - Unique Visitors |