Deep Sky Object in Summer
Sh2-90 (Diffused Nebula in Vulpecula)


Date & Time: Aug 10 2024, from 23:51 to 24:45 JST(+0900)
Composed 10 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight


Sh2-90 / Diffused Nebula, type 2 E
R.A.19h 49m 12.4s (2000.0)
Dec.+26°50' 49" (2000.0)
Apparent Size5.0×3.0'
Real Size11 light yrs.
Magnitude -
Distance7820 light yrs.
Other IDsLBN 144
This is an emission nebula located in the central part of the constellation Vulpecula, found 4.2 degrees southeast of Albireo in Cygnus. It has a roughly circular shape with an apparent diameter of about 5 arc minutes, and it can be seen that red nebulae emitting Hα light are interwoven with dark nebulae. The distance to Sh2-90 is estimated to be around 7,800 light-years.



Sh2-88
Sh2-93

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