Instrument

12.5" RCOS @  ~f/9 (2880 mm fl) 0.64 arcsec / pixel.  The Zoomify image scale is 0.85 to 1.70 arcsec / pixel.

Mount

Paramount ME

Camera

SBIG STL-11000 w/ internal filter wheel, AstroDon Gen II Filters

Acquisition Data

1/19/2011 to 3/28/2011 Chino Valley, AZ... with CCDAutoPilot3 & CCDSoft.  AOL guided

Exposure

Lum  720 min. (48 x 15 min. bin 1x1)

RGB  855 min  (19 x 15 min. bin 2x2 each)

Hα    510 min. (17 x 30 min. bin 1x1)

OIII  750 min. (25 x 30 min. bin 1x1)

The top image is an LLRGB combine.

The bottom image is synthetic color image created with Ha:OII:OIII data mapped to R, G & B

Click here for narrow band color mapped images.

Click here for an Ha filtered b/w image.

Software

• CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin, Noel Carboni's actions and Russell Croman's GradientXTerminator.

• eXcalibrator 2.0-Beta for (u-g), (g-r) color calibration, using 26 stars from the SDSS-DR7 database.

• PixFix32 (pre-beta) to repair column defects.

• CCDStack to calibrate, register, normalize, data reject, combine the sub exposures and create the LRGB image.

• PhotoShop for LLRGB color combine &  on-linear stretching.

North is to the top

Jones-Emberson 1 (PK 164+31.1) is a 14th magnitude planetary nebula in the constellation Lynx at a distance of 1600 light years. It is a larger planetary with low surface brightness. The 16.8-magnitude central star is very blue white dwarf.

Source: Wikipedia