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IC348 Cluster & B3 B4 Dark Nebulae, 


            Jerry Macon
IC348 Cluster & B3 B4 Dark Nebulae

IC348 Cluster & B3 B4 Dark Nebulae

Technical card

Resolution: 4532x3416

Dates:Oct. 30, 2019

Astrodon Gen 2 L 36mm: 131x120" (gain: 99.00) -12C bin 1x1
Astrodon Gen 2 RGB 36mm: 153x120" (gain: 99.00) -16C bin 1x1

Integration: 9.5 hours

Avg. Moon age: 2.57 days

Avg. Moon phase: 7.31%

Bortle Dark-Sky Scale: 4.00 job: 3038096

RA center: 3h 40' 44"

DEC center: +31° 49' 8"

Pixel scale: 0.701 arcsec/pixel

Orientation: 178.061 degrees

Field radius: 0.552

Locations: Dark Star Observatory, Taos, New Mexico, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility


Images from the following two scopes (piggybacked) contributed to this image:
AG12+ASI1600MM at .70 asec/pix (RGB)
TV127is+ASI183MM at .75 asec/pix. (L)
They were all registered to the best R image taken on the AG12.
Using L from the TV NP127is refractor effectively eliminates the spikes from the AG12.
This image was unguided.

This is a really dark and moody one.

It includes the dark nebulae Barnard B3 and Barnard B4.

IC 348 is a star-forming region in the constellation Perseus located about 315 parsecs from the Sun. It consists of nebulosity and an associated 2-million-year-old cluster of roughly 400 stars within an angular diameter of 20?. The most massive stars in the cluster are the binary star system BD+31°643, which has a combined spectral class of B5. Based upon infrared observations using the Spitzer Space Telescope, about half of the stars in the cluster have a circumstellar disk, of which 60% are thick or primordial disks.

The age of this cluster has allowed three low mass brown dwarfs to be discovered. These objects lose heat as they age, so they are more readily discovered while they are still young.



Jerry Macon
License: Attribution Creative Commons

Sky plot

Sky plot


IC348 Cluster & B3 B4 Dark Nebulae, 


            Jerry Macon