Astrophotography by Leonardo Orazi - Photo Gallery - Star Cluster

M13

Optics:	Takahashi FSQ-106EDXIII F/5 530mm. - APO Refractor
Mount:	AP Mach1 GTO on Gemini Q-Lock tripod
Camera:	ATIK 383L+ with SX USB Filter Wheel
Filters:	Baader LRGB 2"
Guiding Systems:	SX OAG with SX Lodestar
Dates/Times:	20/24 May 2011
Location:	Pragelato - Turin - Italy
Exposure Details:	L:R:G:B => 104:6:6:6 = > (13x8):(2x3):(2x3):(2x3) [num x minutes]
Cooling Details:	-20 °C
Acquisition:	Maxim DL/CCD, Perseus
Processing:	CCDStack2, PS CS2, GradientX
Mean FWHM:	3.02"
SQM-L:	21.1