GREEN FL ASH SEQUENCE Leo Aerts An undulating fleck of green appeared atop the Sun before sunset on October 15, 2016. DETAILS: Nikon D90 DSLR camera at ISO 200 and 180-mm lens with 2× teleconverter. Exposure: 1/4,000 0 second. THE TADPOLES ( TAKE 1) Dan VanDerZanden The IC 410 nebula in Auriga features two twisted knots of gas and dust called "the Tadpoles." This version uses a trio of narrowband-filtered images dubbed the Hubble palette. DETAILS: Takahashi TOA-130 apochromatic refractor and SBIG STF-8300M CCD camera with hydrogen alpha (Hα) assigned to the red channel, ionized sulfur (S II) to green, and ionized oxygen (O III) to blue. Total exposure: 16 hours. THE TADPOLES ( TAKE 2) Dan VanDerZanden The same image set, combined differently. DETAILS: Identical specifications as above, with Hα assigned to red and O III to green and blue. CRYSTAL BALL NEBUL A Kfir Simon Look for this bauble (NGC 1514) in Taurus. DETAILS: Celestron C14 Schmidt-Cassegrain telescope, Moravian Instruments G3-16200 CCD camera, and LRGB filters. Total exposure: 7½ hours. º Visit skyandtelescope.com/gallery for more fine astronomical images submitted to us by our readers. Send your best shots to gallery@skyandtelescope.com. s k y a n d t e l e s c o p e .c o m * APRIL 2017 77http://www.skyandtelescope.com/gallery http://www.skyandtelescope.com