Deep Sky Object in Winter
Red Rectangle (Planetary Nebula in Monoceros)
|Date & Time: ||Nov 23 2008, from 24:56 to 25:26 JST(+0900)
|Composed 4 shots with 10 minutes exposed|
|Optical: ||Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
|Auto-guided with Meade LX200 Equatorial & Pictor 201XT
|Digital Camera: ||Nikon D50 (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008×2000)|
This image has captured a tiny celestial object near a boundary between Monoceros and Canis Major.
This object has been classified as an emission nebula with a size of only 4 arc seconds,
but it's considered that the nebula is a "Proto-Planetary Nebula" just started to release gaseous matters from a dead star.
It was discovered in 1973 so registered in no any object catalogues.
We have a nickname of "Red Rectangle" from its shape and unique color,
became comparatively popular object after the Hubble Space Telescope (HST) captured its detailed and marvelous image.
|Red Rectangle / Emission Nebula, type R bipolar|
|R.A.||06h 19m 58.1s (2000.0)|
|Dec.||-10° 38' 14" (2000.0)|
|Distance||2300 light yrs.|
|Other IDs|| -|