Written by Admilson Pinto
|
Thursday, 29 January 2009 00:00 |
NGC 1499 – California Nebula
Date/time: 08.11.2008 21:10 to 08.11.2008 22:35 Az./Alt. positions: 82° / 44° to 99° / 58° Ambient conditions: 0°C, transparency 4/5, seeing 3/5, ¾ Moon, Moonset at 02:15 Location: Trier, Germany Equipment: Telescope: TMB 92 SS f/5.5 with TSFlat, with dew heater Mount: CGE, selfguided with ST-4000XCM Camera: SBIG ST-4000XCM Filters: Baader H-a 7nm Acquisition: Software: CCDSoft V5 FOV, Image scale: 102.8 x 102.8 arcmin, 3.01 arcs/pixel Sub-exposures: 1h 20min (8 x 10min) light frames at –30°C, 50 x 10min dark frames Processing: Calibration, stacking, extraction L-channel in Images Plus 3.75, curves and levels adjustments in CS3, noise reduction with Carbonis Actions, SMI enhancement and High Pass sharpening in CS3 Comments: This is the first attempt to make a H- image with the TMB under high Moon conditions. Too short exposure time. Only through the SMI technique it was possible to bring the details of the nebula.
|
Last Updated on Friday, 27 February 2009 16:24 |