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MetaGuide: M8 Lagoon Nebula in 3nm Ha, with Atik 383L+ and EdgeHD 11 with reducer on CGE-Pro

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M8, Lagoon Nebula with 3nm Ha filter

Imaging OpticsCelestron EdgeHD 11 with reducer at f/7
MountCelestron CGE-Pro
Guiding SoftwareMetaGuide with dithering from SGP
Guiding ModeOff-axis guiding with Hutech OAG5
Imaging CameraAtik 383L+
Guiding CameraQHY5l-ii
FocusSGP and RoboFocus on the primary focuser - no mirror locks used
Exposure Time10x5m
Image Scale0.57" per pixel
Raw FWHMDown to 1.5" in subs
Image ProcessingCalibration and stack in custom software, only levels in Photoshop CS6 - no other processing
Image Processing - OtherIntentionally left uncropped to show full field of 8300 sensor
Image AcquisitionSGP
Other SoftwarePECTool, TheSkyX Pro for best guidestar selection with field of view indicator (FOVI)
Other HardwarePyxis OAG Rotator for best guidestar, Telegizmos 365 cover, Long usb cable to outside setup
DateAug. 15, 2015
FilterAstrodon 3nm H-alpha

Close up of to show hourglass core

Above slightly sharpened in photoshop