PK 193-9.1 (Haro 3-75) Planetary Nebula in Orion

Located at: RA 05 hours 40 minutes 45 seconds, Dec +12 degrees 21 minutes 21 seconds

Size: 24" Magnitude: 13.9 photographic Class: -- (2c?)

North is up

West to the right


 14.5" f5 Newtonian reflector


 ST-8XME, self-guided, binned 1x1, temp -15c & -20c, camera control MaxIm DL 4.56


Lumicon Red filter, 1100 minutes (110 x 10 minute subs), 02/19/20/21/22/24/2016; seeing 2.2-5.7 per CCDStack


CCDStack 2.90.5589.16047, Photoshop CS5.1


 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)


This planetary in Orion was my attempt to 'get away' from the nearly full moon rising in the east, as the moon got too close to NGC 3198 for imaging ... unfortunately, I really underestimated the time required for this one! The POSS image(s) really fool me into thinking I could get this imaged in two to three nights. As it turned out, both NGC 3198 and this planetary were almost the same distance from the moon, which created real problems with the gradients for the first three nights of imaging (the moon moved only 25 degrees in the sky from the 19th to the 21st, keeping the same relative position from the planetary).

Still dealing with the mostly clear and warm, but breezy to windy, "winter" conditions here in Southern California.

View 200% crop.

See the CDS image/data.