Thompson 1 Asterism* in Delphinus

Located at: RA 20 hours 38 minutes 30 seconds, Dec +11 degrees 20 minutes 00 seconds

Size: 5.7' Magnitude: -- 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, 400 minutes  (40 x 10 minute subs), 11/1/2/2009; seeing 2.8-5.8 FWHM per CCDStack


CCDStack, Photoshop 7.0


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

Notes:* Shot this object based on The Sky & Telescope Deep Sky Wonders column by Sue French ("Splashing Around the Dolphin", October 2009, pages 61-64). From Canadian amateur John Thompson. Another image from a full moon period to utilize all available clear sky time