|Object:||Orion Nebula, M42, M43|
|Date:||November 20, 2002|
|Equipment:||William Optics FLT110 at F/6.5, HX916 CCD, G11 mount, ST-4 autoguider|
|Exposure:||H-alpha (see comments): 2x15min and 5x2 min|
|Processing:||Photoshop, curves, layers and mild unsharp mask. No dark or flat frames applied|
was taken within 30° of a nearly full moon. The moon was practically
within Orion for most of the exposure (see
it here). Light clouds and haze dominated the
air. Humidity was at 92%. Seeing was unstable and varied between 4"
and 5" FWHM. Some dew was found on the objective after the exposure
despite the dew heater.
Exposures were taken through a combination of an
IDAS LPS filter and an IR-blocking Red filter from SBIG.
|Description:||Orion Nebula is part of a large gas and dust cloud located in the Orion Constellation. It is one of the closest stellar nurseries to us at about 1,500 light years. The whole cloud easily spans over several hundred light years.|
Copyright © 2002 Paul Kanevsky