SH2-101 Tulip Nebula in Narrowband
Copyright 2012
Larry Phillips
SH2-101 the Tulip Nebula in the constellation Cygnus

It becomes obvious why it is named the tulip nebula when oriented properly. The open part of the tulip points down and to the right.

This is a narrowband image using the HSO palette where Ha is red, SII is green, and OIII is blue.
Distance: 6000 light years
Size: N/A
Camera: SBIG ST-10XME
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: 35 subexposures of 15 minutes each with 12 of Ha in red, 12 of SII in green, and 11 of OIII in blue for a total of 8 hours & 45 minutes.
Date: April 2012
Software: Camera, mount, and guider control - CCD Commander & MaximDL; calibration, stacking, & RGB creation in CCDStack, and further processing in Photoshop CS5.