Contains: The star Merope (23Tau)
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IC 349 - Barnard's Merope Nebula

Technical card

Resolution: 1937x1502

Dates: Sept. 28, 2017

Frames: ZWO LRGB Filters: 500x1" (gain: 0.75) -20C bin 1x1

Integration: 0.1 hours

Avg. Moon age: 7.72 days

Avg. Moon phase: 53.60%

Bortle Dark-Sky Scale: 3.00

Temperature: 6.00 job: 1760744

RA center: 56.584 degrees

DEC center: 23.951 degrees

Pixel scale: 0.275 arcsec/pixel

Orientation: 139.694 degrees

Field radius: 0.094 degrees


Today something about ghosts ;) To be precise - about small ghost of one of the brighetest star of M45 cluster.

Of course I'm writing about IC 349. Is a tiny reflecting nebula lying in the physical neighborhood Merope star.
It's angular size is about 30 seconds of the arc so it is very small, which with its brightness of around 13 mag and the Merope star very close makes it a very difficult object in observations and quite difficult in astrofoto.

Equipment and exposure:

Newton 250/1200 on EQ6 + ASI 178 MM-C camera

L: 350 x 1,5s (gain 70%)
RGB: 300 x 1,5 s (gain 85 %) per channel



Łukasz Sujka



Remove some red from the background

Sky plot

Sky plot


IC 349 - Barnard's Merope Nebula, 


        Łukasz Sujka