J. Kelly Beatty Gallery Gallery showcases the finest astronomical images submitted to us by our readers. Send your best shots to gallery@SkyandTelescope.com. See SkyandTelescope.com/aboutsky/guidelines. ▶ VISITOR FROM THE OORT CLOUD José J. Chambó Comet Catalina (C/2013 US10) had a 3°° tail and shone with a greenish light (due to diatomic carbon) when captured on October 1, 2015, while crossing Centaurus. Details: Takahashi FSQ-106ED apochromatic astrograph and FLI MicroLine ML16803 CCD camera with LRGB filters. Total exposure: 10 minutes. ▾ CONGESTED SCENE IN ORION Kfir Simon The Belt star Alnitak anchors a 1½°-wide view of the Flame and Horsehead nebulae, with bluish NGC 2023 in between. Details: 16-inch Dream Astrograph and Apogee Alta U16M CCD camera with Hα and RGB filters. Total exposure: 80 minutes. 66 Februar y 2016 sky & telescopehttp://www.SkyandTelescope.com/aboutsky/guidelines