Poskus 1 Asterism in Delphinus

Located at: RA 20 hours 46 minutes 00 seconds, Dec +16 degrees 20 minutes 00 seconds

Size: 6.5' Magnitude: stars 11.5 to 12.8 Class: Asterism

North is up

West to the right


8" f5 Newtonian reflector


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


Lumicon Red filter, 150 minutes (15 x 10 minute subs), 10/16/2008; seeing 2.1-2.7 FWHM per CCDStack


CCDStack 1.3.7, Photoshop 7.0


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

Notes: Shot this object, and NGC 6950, based on The Sky & Telescope Deep Sky Wonders column by Sue French ("Arion's Dolphin", October 2008, pages 71-73). They were well away from the nearly full moon rising in the east, and could be imaged in one night (each). Poskus 1 (a little below center of this image) is in the Deep Sky Hunters Database, and has been referred to as a lute, a mandolin, or a flyswatter. Gamma Delphini is the bright (double) star at the lower edge