NGC 4490 (Cocoon Galaxy) in Canes Venatici, with supernova SN 2008ax, the bright 'star'
below the vertical indicator. NGC 4490, or ARP 269, is 40-50 million light years away. The
apparent magniture of the larger galaxy is 9.8 and apparent size is 5.8 arc minutes. The
smaller galaxy is NGC 4485 and lies about 24,000 light years away from NGC 4490. Their
shapes are distorted by their past gravitational interactions.
Date: 23:00, Mar 22, 2008
Location: New Ringgold PA
Optics: Meade LX200R 12 inch at f/10
Mount: Paramount ME
Camera: SBIG ST-8XME / CFW-8
Guiding: ST-8XME integral guiding chip controlled by Maxim CCD
Exposure: LRGB: Luminance only: 6x6 minutes unbinned
Processing: Image acquisition using CCD Autopilot. Initial processing was done using
Maxim DL with subsequent processing with Photoshop.
Blue Mountain Vista Observatory New RInggold PA
NGC 4490 with sn 2008ax