Rob Pettengill:
My 1st Ring Nebula M57
Rob Pettengill:
ImageStackingHighISOExample
Rob Pettengill:
Lagoon Nebula M8 Questar 140825
Rob Pettengill:
Lagoon Nebula Questar Nebulosity 140825
Rob Pettengill:
M13 the Great Hercules Globular Cluster
Rob Pettengill:
M42 Great Nebula in Orion
Rob Pettengill:
M57 Ring Nebula Eagle Eye 140831 ShNR
Rob Pettengill:
Orion141216-HDR20-5