NGC 1499

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

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

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

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

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.



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