Last night was the last clear night for a few days and I decided to image the wizard nebula for the 3rd time and try using both the L-Ultimate and L-Pro, to try and enhance my image. However SH2-142 was in the SouthWest Sky, so I took a chance, since I image from the bottom of our driveway most of the time vs walking about a half mile to the park area of development. The L-Ultimate handled the Sodium Lamp pollution fairly well. But when I tried the L-Pro for a few frames, the sodium lamp polluted data was horrendous. The next time I try the Wizard nebula it will be from the park area of our development, it will be a cold night, but that's ok for its fall coming into Winter.
NGC 7380 is a young
[4]open cluster of stars in the northern
circumpolar constellation of
Cepheus, discovered by
Caroline Herschel in 1787. The surrounding emission nebulosity is known colloquially as the
Wizard Nebula, which spans an angle of 25
′. German-born astronomer
William Herschelincluded his sister's discovery in his catalog, and labelled it H VIII.77. The nebula is known as S 142 in the 1959
Sharpless catalog (Sh2-142).
[2] It is extremely difficult to observe visually, usually requiring very dark skies and an O-III filter. The NGC 7380 complex is located at a distance of approximately 8.5
kilolight-years from the
Sun, in the
Perseus Arm of the
Milky Way.
[2]The cluster spans ~20 light-years (6 pc) with an elongated shape and an extended tail.
[2] Age estimates range from 4
[2] to 11.9
[1] million years. At the center of the cluster lies
DH Cephei, a close, double-lined
spectroscopic binary system consisting of two massive
O-type stars. This pair are the primary ionizing source for the surrounding
H II region, and are driving out the surrounding gas and dust while triggering star formation in the neighboring region.
[4] Of the
variable stars that have been identified in the cluster, 14 have been identified as
pre-main sequence stars while 17 are
main sequence stars that are primarily B-type variables.
[4]- Wu, Zhen-Yu; et al. (November 2009), "The orbits of open clusters in the Galaxy", Monthly Notices of the Royal Astronomical Society, 399 (4): 2146–2164, arXiv:0909.3737, Bibcode:2009MNRAS.399.2146W, doi:10.1111/j.1365-2966.2009.15416.x, S2CID6066790.
- Chen, W. P.; et al. (September 2011), "A Kinematic and Photometric Study of the Galactic Young Star Cluster NGC 7380", The Astronomical Journal, 142(3): 15, Bibcode:2011AJ....142...71C, doi:10.1088/0004-6256/142/3/71, S2CID120469041, 71.
- "NGC 7380". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-18.
- Lata, Sneh; et al. (March 2016), "Variable stars in young open star cluster NGC 7380", Monthly Notices of the Royal Astronomical Society, 456 (3): 2505–2517, arXiv:1511.08892, Bibcode:2016MNRAS.456.2505L, doi:10.1093/mnras/stv2800, S2CID118473907.
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