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Data captured between 27/04 & 03/05, 4 hrs total.

Object:NGC 3766

Object Info:
NGC 3766 is an open star cluster in the southern constellation Centaurus. It is located in the vast star-forming region known as the Carina molecular cloud, and was discovered by Nicolas Louis de Lacaille during his astrometric survey in 1751–1752. At a distance of about 1745 pc, the cluster subtends a diameter of about 12 minutes of arc.

There are 137 listed stars, but many are likely non-members, with only 36 having accurate photometric data. Total apparent magnitude of 5.3 and integrated spectral type of B1.7. NGC 3766 is relatively young that is estimated as log (7.160) or 14.4 million years, and approaching us at 14.8 km/s. This cluster contains eleven Be stars, two red supergiants and four Ap stars.

36 examples of an unusual type of variable star were discovered in the cluster. These fast-rotating pulsating B-type stars vary by only a few hundredths of a magnitude with periods less than half a day. They are main sequence stars, hotter than δ Scuti variables and cooler than slowly pulsating B stars.

Number of Subs:
L 60  , R  60  , G  60  , B 60
Sub Length:
60 sec
Total Integration Time:
4 Hrs
Date Captured:
27/04/2020 & 03/05/2020
Imaging Camera: 
Moravian G2 2000
Imaging Telescope: 
GSO RC8 CF
Reducer: no
Focal Length: 
1625
Image Scale:
0.94 arcsec/pixel
Field of View: 
19 x 25 arcmin
Mount: 
Ioptron CEM60
Guide Scope: 
Orion ST80
Guide Camera: 
Prostar LP colour (toupcam)
Capture Software: 
Voyager
Guide Software: 
PHD Guiding 2
Processing Software: 
PixInsight

 

Shane

NGC3766LRGB.jpg

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