Planetary Nebula Discovery Candidate Howell-Crisp1

RA 06 21 41.0  DEC +23 35 13

Discovered on 4 November 2006

From Michael Howell (Discovery shot1)

Halpha = Red, [OIII] = Green, [SII] = Blue

From Richard Crisp (Discovery shot2)

[SII] = Red, Halpha = Green, [OIII] = Blue

From Richard Crisp (Confirming shot 1)

Ha = Red, [OIII] = Green, [OIII] + 20%*Halpha = Blue

4 hours total exposure binned 2x2 (0.84 arc-sec/pixel)

Taken with 18" f/12.6 Classical Cassegrain used at f/7.1

Stinger450 image (taken under very poor seeing conditions with thin cirrus four days after full moon: Nov 9, 2006)

From DSS

From POSS.F

 

 

from WIYN telescope on Kitt Peak

 

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