Deep Sky Object in Summer
B142 & B143 (Dark Nebulae in Aquila)

Click on image to enlarge

Date & Time: May 2 2025, from 26:18 to 27:30 JST(+0900)
Composed 10 shots with 8 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-D1 light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial+SBIG STV
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -15°C)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...100


B142, B143 / Dark Nebula, type 6 Ir
R.A.19h 41m 06.2s (2000.0)
Dec.+10°54' 17" (2000.0)
Apparent Size80×50'
Real Size45×28 light yrs.
Magnitude -
Distance2000 light yrs.
Other IDsLDN 694
The constellation of Aquila surprisingly includes no Messier objects in spite of being soaked in the summer's Milky Way. But you'll be fascinated with various dark lanes being tangled in the Milky Way through small binoculars, and especially, dark nebulae B142 and B143 (registered in the Barnard's catalogue) are the most striking and vastest ones in them. They're positioned at about 3 degrees NW of Altair (alpha Aquilae).
This group of dark nebula looks like a Greek letter of ξ, and is devided into two segments of south (B142) and north (B143) ones.



Around Star Cloud in Scutum
Around B292, B295

Copyright(c) 2015 by Naoyuki Kurita, All rights reserved.
To top page To Deepsky in Summer index Aquila