News Release Archive:

News Release 85 of 885

August 11, 2011 09:00 AM (EDT)

News Release Number: STScI-2011-24

Hubble Offers a Dazzling View of the 'Necklace' Nebula

Technical facts about this news release:

About the Object

Object Name:	Necklace Nebula, PN G054.2-03.4
Object Description:	Planetary Nebula
Position (J2000):	R.A. 19h 43m 59s.50 Dec. +17° 09' 01".08
Constellation:	Sagitta
Distance:	About 15,000 light-years or 4,600 parsecs
Dimensions:	The wide-field image of the Necklace Nebula is 1.7 arcminutes (7.6 light-years or 2.3 parsecs) wide.

About the Data

Data Description:	This image was created from HST data from proposal 12675: K. Noll, Z. Levay, M. Livio, C. Christian, H. Bond, L. Frattare, M. Mutchler, T. Borders, and W. Januszewski (Hubble Heritage Team/STScI).
Instrument:	WFC3/UVIS
Exposure Date(s):	July 2, 2011
Exposure Time:	44 minutes
Filters:	F502N ([O III]), F438W (B), F656N (H-alpha), F555W (V), F658N ([N II]), and F814W (I)

About the Image

Image Credit:

NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

Release Date:

August 11, 2011

Colors:

This image is a composite of many separate exposures made by the WFC3/UVIS instrument on the Hubble Space Telescope using six different filters, three broadband filters, and three narrowband filters. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

F502N ([O III]), F438W (B)	blue
F656N (H-alpha), F555W (V)	green
F658N ([N II]), and F814W (I)	red

Orientation/Scale:

Compass and Scale Image for Necklace Nebula